14 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:02
  Recording of rtsp stream with automatic video segments [closed] - ToD Newest 'ffmpeg' Questions - Stack Overflow
  It is necessary to capture video in ffmpeg so that it works continuously without restarting. I don’t need to re-encode it, just capture it, and I need it to automatically divide the video into 2-minute segments and name the files according to the current time. I managed to do it, but without segmentation, by running a loop, but the gap between pieces of video is about 9 seconds. Stream rtsp from IP-camera. Help please.
• 10:06
  AWS Lambda failed to resolve hostname in child_process spawn - warly Newest 'ffmpeg' Questions - Stack Overflow
  i'm trying to get ffmpeg working in AWS Lambda reading from and writing to S3. I crawled through dozens of aws documentations, stackoverflow questions and blog posts. All do it slightly different, but in the end none of them worked for me. So I hope to find help here :) I sticked to the tutorial from InPlainEnglish: https://plainenglish.io/community/automated-video-processing-with-aws-lambda-and-ffmpeg-2834b7 The ffprobe command does work, so ffmpeg is callable. But when calling ffmpeg within a child_process.spawn command i get the error Failed to resolve hostname (...) -- https://plainenglish.io/community/automated-video-processing-with-aws-lambda-and-ffmpeg-2834b7
• 06:02
  Extract clips from different videos, and merge them into one video, using ffmpeg [closed] - mikef Newest 'ffmpeg' Questions - Stack Overflow
  I want to extract multiple clips from different videos (in different encoding schemes/formats), and then merge them into one video. The inputs are a list of files and precise timestamps of the clips: [ ("1.mp4", ["00:05:02.230", "00:05:05.480"]), ("4.mp4", ["00:03:25.456", "00:03:28.510"]), ("2.mp4", ["00:12:23.891", "00:12:32.642"]), ("2.mp4", ["00:12:44.236", "00:12:46.920"]), ("3.mp4", ["00:02:06.520", "00:02:11.324"]), ("1.mp4", ["00:06:23.783", "00:06:25.458"]), ("2.mp4", ["00:03:53.976", "00:03:56.853"]), ... ] Option 1: (...)
• 02:04
  Right way to use vmaf with ffmpeg - dravit Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to calculate the VMAF score of a processed video wrt the original file. Command I have used: ffmpeg -y -loglevel info -stats -i original.mp4 -i processed.mp4 -lavfi "[0]null[refdeint];[refdeint]scale=1920:1080:flags=neighbor[ref];[1]setpts=PTS+0.0/TB[b];[b]scale=1920:1080:flags=neighbor[c];[c][ref]libvmaf=log_fmt=json:phone_model=1:model_path=model_path_here/vmaf_v0.6.1.json:n_subsample=1:log_path=log.json" -f null - Now as per the official documentation of vmaf with ffmpeg found here, it says source/reference file followed by the (...) -- here, https://medium.com/@eyevinntechnology/keep-an-eye-on-the-video-quality-b9bcb58dd5a1, https://websites.fraunhofer.de/video-dev/calculating-vmaf-and-psnr-with-ffmpeg/

13 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:25
  Writing a video frame by frame using ffmpeg [closed] - Chris Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to write a video frame by frame using ffmpeg as explained here: http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/ However, I am always getting an OSError: [Errno 22] Invalid argument. I am on Windows 7 and using Python 3.4. Here is the code: import subprocess as sp import numpy as np import time ffmpeg_bin = r'C:\\path\\to\\ffmpeg\\ffmpeg.exe' command = [ffmpeg_bin, '-y', # (optional) overwrite output file if it exists '-f', 'rawvideo',  (...) -- http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/
• 09:31
  How to convert an MJPEG stream to YUV420p, then hardware encode to h264 on rpi4 using go2rtc and frigate? [closed] - Josh Pirihi Newest 'ffmpeg' Questions - Stack Overflow
  I am putting together a dashcam/dvr/reversing camera system for my van. I am using some analogue HD reversing cameras and AHD to USB dongles along with a Raspberry Pi 4. The pi is running frigate in docker, it has a fresh Raspberry Pi OS installed. The AHD dongles show up straight away as /dev/video0 when plugged in. I am running into an issue getting the MJPEG stream from the dongle to be accepted by the hardware h264 encoder. I am able to feed the hardware encoder with the raw YUYV 4:2:2 stream, however due to bandwidth limitations this cuts the framerate intolerably low (720p (...) --
• 09:58
  FFmpeg RTSP stream to remote MediaMTX server disconnects after a few seconds - Rorschy Newest 'ffmpeg' Questions - Stack Overflow
  I'm new to RTSP and MediaMTX, and I'm trying to live stream my screen using FFmpeg and MediaMTX for a specific use case. Everything works perfectly when both FFmpeg and MediaMTX run on the same machine. However, when I move MediaMTX to a remote server, the stream becomes unstable — I can't maintain a connection or view the stream reliably. Here is the FFmpeg command I'm using from the client machine: ffmpeg -f gdigrab -framerate 10 -offset_x 0 -offset_y 0 -video_size 1920x1080 -i desktop -f lavfi -i anullsrc -vcodec libx264 -tune zerolatency -g 30 (...)
• 09:32
  ffmpeg how to set max_num_reorder_frames H264 - Vasil Yordanov Newest 'ffmpeg' Questions - Stack Overflow
  Anyone know how can I set max_num_reorder_frames to 0 when I am encoding H264 video ? You can find in the docs as uint8_t H264RawVUI::bitstream_restriction_flag PS. Based on the discussion in the comments. What I actually want to accomplish is to have all the frames written in the order in which they were encoded. My use-case is - I have 1000 images for example. I encode each one of them using the codec, but then when I investigate a little bit and check the actual packets in the H264 container, I see that I have cases when one frame is written twice (for example ... (...) -- docs
• 05:57
  Could not find com.arthenica:ffmpeg-kit-full:6.0-2 - gabocalero Newest 'ffmpeg' Questions - Stack Overflow
  I started receiving this message when I build my project > Could not find com.arthenica:ffmpeg-kit-full:6.0-2. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - https://repo.maven.apache.org/maven2/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - https://jcenter.bintray.com/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - https://jitpack.io/com/arthenica/ffmpeg-kit-full/6.0-2/ffmpeg-kit-full-6.0-2.pom - (...) -- project's github page,

12 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:14
  How to install ffmpeg for ubuntu using command line? - Cheng Jaycee Jiang Newest 'ffmpeg' Questions - Stack Overflow
  A lit background... This is a piece of code in my Dockerfile. I want to deploy my app to google app engine. Somehow I couldn't install ffmpeg. ENV VIRTUAL_ENV /env ENV PATH /env/bin:$PATH RUN apt-get install ffmpeg This is error log: E: Unable to locate package ffmpeg The command '/bin/sh -c apt-get install ffmpeg' returned a non-zero code: 100 ERROR ERROR: build step "gcr.io/cloud-builders/dockerⓐsha256:ef2e6744a171cfb0e8a0ef27f9b9a34970341bfc0c3d401afdeedca72292cf73" failed: exit status 100 I found (...)

11 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:15
  FFMPEG - Image extraction stretch problem [closed] - karmasan Newest 'ffmpeg' Questions - Stack Overflow
  I have a .mov video file with 1440x1080 resolution. I extracted the frames from the video, using scale -vf scale=1440:-1 but the images are stretched. Even though, the dimension of the extracted images are 1440x1080, the image is stretched on the height dimension and doesn't match the aspect ratio of the video. How can I solve this issue? Here is the output from FFMPEG for the original video: Stream #0:0(eng): Video: qtrle (rle / 0x20656C72), rgb24(progressive), 1440x1080, 624445 kb/s, SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 25 tbn (...)
• 23:00
  ffmpeg combine images to video and specify duration for each image? [duplicate] - hanshenrik Newest 'ffmpeg' Questions - Stack Overflow
  Can ffmpeg combine images to a video with a specific duration for each image? For example, i want 1.jpg to be displayed for 100 ms, and 2.jpg to be displayed for 120 ms, and 3.jpg to be displayed for 115 ms, and so on.. can ffmpeg do this? I have a bunch of images, each image has their own timestamp, and the timestamps decides how long each image should be in the video.. This is similar to question Conversion of images to video with variable fps using FFmpeg , but unlike that post, I do not need a gradual increase, but I rather need to specify the duration of each (...)
• 16:56
  Can't import moviepy due to missing ffmpex.exe - SilentGrove_99 Newest 'ffmpeg' Questions - Stack Overflow
  I was trying to create an application with python using the moviepy library. I installed it using: pip install moviepy I found this from a MoviePy crash-course: # Import everything needed to edit video clips from moviepy.editor import * # or from moviepy import * # moviepy v2 after removal of editor After trying to run this line i get this error: Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> # Import everything (...)

10 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:40
  Is this a problem in my command, the stream, or FFMPEG itself? - Ali Mustafa Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to download a section from approximately 06:40:00 to 06:44:00 from this stream: https://kick.com/grossgore/videos/8d36c089-ff2b-4167-9c92-bc8a3a9d033b I found the m3u8 URL: https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8 I run the following command: ffmpeg -ss 06:40:00 -to 06:44:00 -i https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8 -c copy out.mp4 The command runs for a while, but for some reason the output file is (...) -- https://kick.com/grossgore/videos/8d36c089-ff2b-4167-9c92-bc8a3a9d033b, https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8
• 08:08
  RTSP Client for H264 Audio/Video Stream - Jean-Philippe Encausse Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking for a simple way to get data of an IP Camera RTSP Stream (using H264 Audio/Video) and get on the other side a frame by frame byte[] a stream of the audio After many research EmguCV Capture seems hanging forever (no answer from forum) There is many (too big) RTSP Server few decode H264 There is "slow" ffmpeg wrapper There is some managed DirectShow wrapper So I don't know where to go ? And how to do this ? It seems iSpyCamera is doing the job but it's a big project not a little (...) -- RTSP Server

9 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:50
  Extract motion vectors from h264 using hardware codec [closed] - adore Newest 'ffmpeg' Questions - Stack Overflow
  I am writing program to extract motion vectors from stream (videofile or webcam). While i am using software decoder everything seems ok, but when i trying to change decoder from h264 to h264_rkmpp, then and error, that appears in console: RgaBlit(1465) RGA_BLIT fail: Invalid argument RgaBlit(1466) RGA_BLIT fail: Invalid argument handl-fd-vir-phy-hnd-format[0, 17, (nil), (nil), 0, 0] rect[0, 0, 640, 480, 640, 480, 2560, 0] f-blend-size-rotation-col-log-mmu[0, 0, 0, 0, 0, 0, 1] handl-fd-vir-phy-hnd-format[0, 0, 0x9f70c30, (nil), 0, 0] rect[0, 0, 640, 480, 640, (...)
• 12:49
  I detected an error downloading a twitch tv stream. I use ffmpeg. That error stops the download, how can I fix it? [closed] - sort35ofn Newest 'ffmpeg' Questions - Stack Overflow
  I wanted to perform a download via ffmpeg of a video streamed live on the Twitch tv platform. I have windows 10 and I use cmd to run ffmpeg. The command I use to download the concert is: ffmpeg.exe -i "m3u8-link" -c copy name.ts I once downloaded with yt-dlp, but noticed that the quality was noticeably lower, at least using the following command: yt-dlp.exe -f (bestvideo+bestaudio/best) "amazon-channel-link" That's why I prefer to download with ffmpeg. Normally I haven't had any problems with downloads. But this is already the third time (not (...)
• 18:25
  Decoding pcm_s16le with FFMPEG? - Davide Caresia Newest 'ffmpeg' Questions - Stack Overflow
  i have a problem decoding a wav file using ffmpeg. I'm new to it and i'm not quite used to it. In my application i have to input the audio file and get an array of samples to work on. I used ffmpeg to create a function that gets in input the path of the file, the position in time where to start to output the samples and the lenght of the chunk to decode in seconds. When I try to decode the file harp.wav everything runs fine, and I can plot the samples as in the image plot-harp.png The file is a WAV file encoded as: pcm_u8, 11025 Hz, 1 channels, u8, 88 (...)
• 12:59
  How to cut one track from one big flac file (16 tracks) [closed] - Павел Дёмин Newest 'ffmpeg' Questions - Stack Overflow
  There is a flac file + log to it. The file weighs more than 200 MB and contains 16 tracks. I need to cut track number 3 from it. How to do this in ffmpeg? Read offset correction : 48 Overread into Lead-In and Lead-Out : No Fill up missing offset samples with silence : Yes Delete leading and trailing silent blocks : No Null samples used in CRC calculations : Yes Used interface : Installed external ASPI interface Used output format : Internal WAV Routines Sample format : 44.100 Hz; 16 Bit; Stereo TOC of the extracted CD Track | Start | Length (...)

8 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:41
  FFmpeg Android Errors - axjp Newest 'ffmpeg' Questions - Stack Overflow
  Ok so im making a kotlin android app and for file conversion from 3gp to wav i added the android ffmpeg library with implementation 'com.arthenica:mobile-ffmpeg-full:4.4' then i added this code to convert the files FFmpeg.execute("-i" + f2 +"/storage/emulated/0/Android/data/com.icompilecodewithnowarnings.ffmpegthing/files/Documents/recording.wav") for further context f2 is /storage/emulated/0/Android/data/com.icompilecodewithnowarnings.ffmpegthing/files/Documents/recording.3gp The error log is to large to simply just fit here but heres some of it Execution (...)
• 05:38
  FFmpeg function avformat_open_input for USB video device throws exception: No such file or directory - ffvideoner Newest 'ffmpeg' Questions - Stack Overflow
  Windows & C# & FFmpeg.AutoGen I used the ffmpeg-function (from library FFmpeg.AutoGen) to show video from rtsp-stream: ffmpeg.avformat_open_input(&pFormatContext, "rtsp://127.0.0.1:8554/abc", iformat, null); It works right. Now I want to use this function for USB video device. FFmpeg outputs this device name: ffmpeg -list_devices true -f dshow -i dummy [dshow ⓐ 0000000000163000] "GENERAL WEBCAM" (video) This is how I'm trying to get the video: string deviceName = "GENERAL WEBCAM"; or string deviceName = (...)

7 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:07
  FFmpeg/DASH: duration or timestamp out of range for mov/mp4 format [closed] - mike Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert a aac stream to dash. The issue is that I get a lot of errors as below(though it seems to segment it into multiple files but I get errors on the player too). The question is why do I get these errors and how can I fix it? If I simply convert "copy" it into to a single mp4 file it works without error. ffmpeg -i "a.mkv" -y -map 0:1 -c:0 copy -min_seg_duration 1000000 -use_timeline 1 -use_template 1 -init_seg_name init.mp4s -media_seg_name "\\$Number\\$.mp4s" -adaptation_sets "id=1,streams=0" -remove_at_exit 0 -f dash -dash 1 (...)
• 16:15
  How to stream from camera to browser using ffmpeg [closed] - Gabriel Furstenheim Newest 'ffmpeg' Questions - Stack Overflow
  FFMpeg just merged support for WebRTC. If I understand correctly, this should allow to stream directly from ffmpeg to a website without the use of a server. How does this work? ffmpeg -f dshow -i video=MyCamera ??? I guess something similar to I'm guessing something like ffmpeg -f dshow -i video=MyCamera -f webrtc udp://localhost:6666 Also, how would the website look like? For simplicity, assume that everything happens in (...) -- just merged support for WebRTC.
• 16:02
  How to install pytorch and opencv using a fixed conda channel order? - progquester Newest 'ffmpeg' Questions - Stack Overflow
  Conda creates a pristine environment, configures a fixed channel order, and then starts installing pytorch torchvisioni pytorch-cuda and opencv, and it prompts for dependency conflicts. Do I have to install opencv via pip? The same thing happens with python 3.10 $ conda create -n my_env3.9 python=3.9 $ conda activate my_env3.9 $ conda install pytorch torchvision pytorch-cuda=11.8 opencv Channels: - pytorch - nvidia - conda-forge - defaults Platform: linux-64 Collecting package metadata (repodata.json): done Solving environment: (...)

6 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:37
  How to solve javacv ExceptionInInitializerError [closed] - shihui wei Newest 'ffmpeg' Questions - Stack Overflow
  I want to combine multiple images into a gif. I chose ffmpeg. I learned that there are binary dependencies including ffmpeg in java, so I chose javacv First, I added the dependency of javacv to my pom file： org.bytedeco javacv-platform 1.5.11 Then I wrote a code to synthesize GIF from multiple images. public static byte[] encodeGif(List frames, int frameDelayMs, boolean loopForever) if (frames == null || frames.isEmpty()) throw new IllegalArgumentException("frames 不能为空"); int width = frames.get(0).getWidth(); int (...)
• 02:43
  ffmpeg - SIGSTOP generate moov atom - user2828522 Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg in a script that does "motion detection". The principle is as follows: ffmpeg is launched then immediately stopped with a "killall -s STOP ffmpeg"; at each motion detection, a "killall -s CONT ffmpeg" is sent to the program in order to record the sequence; after X seconds, a "killall -s STOP ffmpeg" is sent pending a new motion detection. When ffmpeg records following a SIGCONT, it is possible to properly stop ffmpeg with a "killall -s QUIT ffmpeg" and thus generate the atom moov. However, I can't find a way to (...)

5 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:49
  FFMPEG: embed current time in milliseconds into video [closed] - stevendesu Newest 'ffmpeg' Questions - Stack Overflow
  I would like to embed the computer's local time in milliseconds into a stream using FFMPEG. I can embed the local time in seconds using drawtext like so: ffmpeg -i -vf "drawtext=text='%localtime\\:%T'" -f flv Looking through the documentation for drawtext, doing some tests, and Googling around, it seems like localtime and gmtime don't provide milliseconds -- just seconds. However the pts options does have milliseconds: ffmpeg -i -vf "drawtext=text='%pts\\:hms'" -f flv I also found out that pts supports (...)
• 11:03
  Building ffmpeg-kit for android - kish0n Newest 'ffmpeg' Questions - Stack Overflow
  I want to create an AAR dependency for my Android project, where I only convert video to audio files and use ffprobe to extract media information. https://github.com/arthenica/ffmpeg-kit I am using the below command for generating the AAR file: ./android.sh -d --enable-android-media-codec --enable-android-zlib --enable-lame --enable-shine --enable-opus --enable-libvorbis --disable-arm-v7a-neon --disable-x86 --disable-x86-64 --disable-arm-v7a When I import the AAR file to my project I get this error in the runtime: java.lang.ClassNotFoundException: Didn't find (...) -- https://github.com/arthenica/ffmpeg-kit
• 09:40
  Scrolling Effect of an Image using FFmpeg [closed] - neeebzz Newest 'ffmpeg' Questions - Stack Overflow
  I want to create an mp4 video of 40 seconds where an image just floats from top to bottom and vice versa. I am using the following ffmpeg command: ffmpeg -loop 1 -t 40 -i ./input.jpg -filter_complex [0]scale=800:-1[s0];[s0]crop=h=450:w=800:x=0:y=(ih-450)*(3*pow(t/40.241\\,2) - 2*pow(t/40\\,3))[s1];[s1]scale=800:400[s2] -map [s2] -pix_fmt yuv420p -preset medium -r 30 -vcodec libx264 ./output.mp4 -y The animation is working as expected however the motion is very jerky. How can I smooth it out? Ffmpeg (...)

4 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 02:18
  I am really confused with this kind of compilation error( C ffmpeg Qt) - David Tree Newest 'ffmpeg' Questions - Stack Overflow
  I downloaded the latest ffmpeg source code and successfully installed it on Ubuntu But I failed to compile a simple demo.(I did included proper headers) Here are the error messages ,just to name a few: error: unknown type name 'AVFrame' error: 'NULL' undeclared (first use in this function) error: request for member 'streams' in something not a structure or union error: 'AVMEDIA_TYPE_VIDEO' undeclared (first use in this function) error: expected expression before ')' (...)

3 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:38
  Screen Recording Issues using Python and FFMPEG [closed] - Kevin McDowell Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to record a walkthrough of a 3D space contained within a Chrome browser session. The goal is to create deterministic output. If I run this command from a VS Code terminal, it records 30 seconds of video from the window that's about 6MB: ffmpeg -f gdigrab -framerate 30 -i "title=My3D - Google Chrome" -t 30 "My3D - Google Chrome_screenRecording_v0.mp4" However, if I call it from Python like so: subprocess.run("ffmpeg -f gdigrab -framerate 30 -i \\"title=My3D - Google Chrome\\" -t 15 \\"My3D - Google Chrome_screenRecording_v0.mp4\\"") The output video (...)
• 20:01
  ffmpeg failed - 455 Method Not Valid in This State - paty.r15 Newest 'ffmpeg' Questions - Stack Overflow
  I created a Node.js app that gets an RTSP stream with FFmpeg to analyse it with OpenCV 3. It is working if I install FFmpeg and OpenCV in my local. But now I created a Docker image that contains the installation of those libraries and I'm using it as a base to create another image & container where I'm trying to run my app. When I run it inside that container I get this error over and over again when trying to get the RTSP stream with an FFmpeg instruction for method SETUP failed: 455 Method Not Valid in This State This is how I am installing FFmpeg (...)

2 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 03:51
  App Store Submission Fails Due to Unsupported Architectures and Invalid Segment Alignment [closed] - Ahsanur Rahman Newest 'ffmpeg' Questions - Stack Overflow
  I’m using ffmpegkit in my iOS app, but when I submit the app to the App Store, I get these errors: Validation failed Unsupported Architectures. The executable for MyApp.app/Frameworks/ffmpegkit.framework contains unsupported architectures '[x86_64]'. (ID: 3e35bca7-7b8f-4c2b-bfb2-a27c8ad70c45) Validation failed Unsupported Architectures. The executable for MyApp.app/Frameworks/libavcodec.framework contains unsupported architectures '[x86_64]'. (ID: fd864260-dae3-4816-bdf3-ca7389374242) Validation failed Unsupported Architectures. The (...)
• 15:28
  How to add a fake microphone to android emulator running on linux headless - Red Newest 'ffmpeg' Questions - Stack Overflow
  Trying to add a microphone to the android emulator running on Linux headless. Host as no microphone so I need to create fake one and simulate playing some random music for my android test. In emulator command there is a option to use the host audio as input, by passing -allow-host-audio but it is not working on the phone. How to create virtual microphone Start the pusleaudio pulseaudio -D --exit-idel-time=-1 Create the fake mic pactl load-module module-null-sink sink_name=FakeSink pactl load-module module-remap-source master=FakeSink.monitor (...)
• 07:07
  Attempting to parse an m3u8 file in FFmpeg with mismatched extensions and formats - Daniel Melo Newest 'ffmpeg' Questions - Stack Overflow
  As I attempt to parse an m3u8 file thats being downloaded over the air, it utilizes "html" as an extension to represent the ts video slices. Even with the command being written as follows: ffmpeg -allowed_extensions ALL -i https://.../master.m3u8 -codec copy ./out.mkv It still produces the following error: detected format mpegts extension none mismatches allowed extensions in url (...)/page-0.html Could there be a way to ignore this format and extension (...)

1er juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:52
  FFmpeg video from image plus audio length issue - blackbrayn Newest 'ffmpeg' Questions - Stack Overflow
  I'm having issues regarding the output video length when using the following code which seems to work for everybody else. On a input mp3 of 04:56 I get a 05:09, the last part is only the image, no sound, for a longer mp3 input file I get more silent video at the end. I'm using the "-shortest" option just before the output file as an argument , as suggested in other threads around stackoverflow/superuser. ffmpeg -loop 1 -i image.jpg -i audio.mp3 -c:v libx264 -tune stillimage -c:a aac -strict experimental -b:a 192k -shortest out.mp4 I already changed the (...)

30 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:23
  How to Ensure UTF-8 Kurdish (Sorani) Subtitles Render Correctly in FFmpeg? [closed] - Kurdi Bashur Newest 'ffmpeg' Questions - Stack Overflow
  I’m trying to burn or embed Kurdish (Sorani, ckb) subtitles into an MP4 video using FFmpeg, but the text (e.g., characters like ێ, ڵ, ڵا) sometimes appears garbled or incorrect. I want to ensure proper UTF-8 encoding for the subtitles. Here’s what I’ve tried: ffmpeg -i input.mp4 -vf "subtitles=subtitles.srt:force_style='Fontname=Noto Sans Arabic,Fontsize=24'" -c:v libx264 -c:a aac output.mp4 How can I ensure FFmpeg correctly handles UTF-8 Kurdish subtitles? Should I use -sub_charenc for UTF-8 files, or is it only for non-UTF-8 (e.g., Windows-1256)? Are (...)
• 15:14
  Using FFMPEG: How to do a Scene Change Detection? with timecode? - Mozart Newest 'ffmpeg' Questions - Stack Overflow
  Based on this article it seems that it is possible to use FFMPEG to detect scene change in videos: http://www.luckydinosaur.com/u/ffmpeg-scene-change-detector Now I have a video that displays a book text and when the text (word or sentence) is spoken it gets highlighted. Something like this audio book: https://youtu.be/lA7L6ZNVKjc I need to know the timestamp when the text gets highlighted (hence scene change), this will allow me to add timestamp tags on my youtube video, so it becomes easier for listeners to navigate through the audiobook. What is (...)
• 11:54
  How to import FFmpeg into Android project - Vyacheslav Parinov Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert series of images into video. For that I'm adding FFmpeg into my Android project. However it is not adding properly, so I can't import class FFmpeg into the code. in the statement "int rc = FFmpeg.execute(command);" FFmpeg is highlighted in red. I think something wrong with libraries. Could you please give suggestion how import libraries correctly? My Manifest file below <?xml version="1.0" encoding="utf-8"?> My settings.gradle (...)

29 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:59
  How to implement spring animation (mass, tension, friction) in FFmpeg zoompan filter instead of linear interpolation? - Mykyta Manuilenko Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a zoom-in and zoom-out animation using FFmpeg's zoompan filter, but I want to replace the linear interpolation with a spring animation that uses physics parameters (mass, tension, friction). My input parameters: "zoompan": "focusRect": "x": 1086.36, "y": 641.87, "width": 613, "height": 345 , "easing": "mass": 1, "tension": 120, "friction": 20 Current working linear animation: ffmpeg -framerate 25 -loop 1 -i input.png \\ -filter_complex "\\  (...)
• 05:48
  Reuse PlainTransport for new FFmpeg stream without full reinit [closed] - Sang Vo Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a backend-driven streaming application using Mediasoup + FFmpeg + PlainTransport. My goal is to switch between different media sources (e.g. welcome.mp4, waiting.mp4, streaming.ts) from backend, while keeping the same PlainTransport alive to avoid the overhead of tearing down and rebuilding the pipeline. Current setup Backend: NestJS server with Mediasoup Media ingest: FFmpeg sends RTP stream to PlainTransport Producer: created after FFmpeg starts Frontend: React client that consumes via Consumer after signaling What I (...)
• 05:59
  Merge video with ffmpeg - Björn Newest 'ffmpeg' Questions - Stack Overflow
  I have tried this command: ffmpeg -i 'concat:10.mov|11.mov' -codec copy out.mov The output file out.mov only shows whats in the first movie (10.mov). Been googling for several hours and tried lots of things but nothing works. I want this done without re-encoding the files. Just merge with the same codec ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers built with Apple LLVM version 8.0.0 (clang-800.0.42.1) configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 (...)
• 02:28
  🧵 [QUESTION][QUESTION] Reuse PlainTransport for new FFmpeg stream without full reinit - Sang Vo Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a backend-driven streaming application using Mediasoup + FFmpeg + PlainTransport. My goal is to switch between different media sources (e.g. welcome.mp4, waiting.mp4, streaming.ts) from backend, while keeping the same PlainTransport alive to avoid the overhead of tearing down and rebuilding the pipeline. ✅ Current Setup: Backend: NestJS server with Mediasoup Media ingest: FFmpeg sends RTP stream to PlainTransport Producer: created after FFmpeg starts Frontend: React client that consumes via Consumer after signaling 🔄 What I (...)

28 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:17
  How to capture a web stream's picture in swift without playing it - Sergio Newest 'ffmpeg' Questions - Stack Overflow
  I am developing an application for iOS in which I need to capture one frame from the stream at every minute to show in a picture view. I am thinking to use ffmpeg. I tried the ffmpeg command in my Mac terminal and it works: ffmpeg -probesize 4096 -analyzeduration 50000 -threads 1 -i -vf fps=fps=1 -frames 1 -threads 1 -y -s 320×240 -f mjpeg -pix_fmt yuvj444p .jpg But I don't know how to call my compiled ffmpeg for iOS inside my app (I already have compiled it, with the '.a' libs). I also read about using something like (not ffmpeg): func (...)
• 09:54
  Safari sends excessive HTTP range requests during HTML5 MOV playback - Lucy Newest 'ffmpeg' Questions - Stack Overflow
  I am currently developing a web application based on React and Next.js, and I use the react-player library to play user-uploaded videos stored on AWS S3. The supported upload video formats are mp4, mov, and mkv, with codecs including H.264 or H.265 (HEVC). Problem However, some H.264 videos in the mov format exhibit noticeably poor playback performance only in the Safari browser. The videos do not play smoothly and frequently experience stuttering or delays. How Safari Handles Range Requests (As I Understand It): Safari first sends a normal GET request to check if (...)
• 06:27
  Real time HLS editing with FFmpeg filter_complex without re-encoding full stream - Devdeep Ghosh Newest 'ffmpeg' Questions - Stack Overflow
  I'm new to FFmpeg and working on a lightweight video editor for HLS streams that allows cutting and trimming without re-encoding the entire video. I'm using FFmpeg to only process the segments that intersect with "exclusion" ranges (timestamps to remove), while copying unmodified segments directly. The goal is speed and accuracy. The logic identifies which .ts segments overlap with exclusion windows, applies filter_complex to trim just those segments, and then programatically reassemble everything into a new .m3u8 playlist. However, the final output sometimes freezes or (...)

27 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:46
  mp4 - Mooving moov atom in web js [closed] - Ben Carp Newest 'ffmpeg' Questions - Stack Overflow
  In a web app, recording is done with MeidaRecorder, which places the moov atom at the end. We want to generate a progressive video with moov at the start. Most of examples that I found use ffmpeg wasm which we can't use in our project. Is there an option to extract the video parts from the Blob/video chunks and to repack them in mp4 that will generate a new progressive mp4?
• 18:28
  Python yt-dlp and ffmpeg error "merging of multiple formats but ffmpeg is not installed" - T Tea Tie Newest 'ffmpeg' Questions - Stack Overflow
  I am using the latest version of yt-dlp with Python 3.9. I am trying to download a youtube video in mp4 format with outputname as the youtubeid.mp4 and with best resolution not more than 4K. This is my Python code: ytid = '4cDqaLxrt6Q' url = 'https://www.youtube.com/watch?v='+ytid output_filename = ytid+".mp4" with YoutubeDL('format': 'bestvideo[height<=?4K]+bestaudio/best', 'output': output_filename) as ydl: ydl.download(url)`#TODO debug FFmpeg and check if outputname is ok  (...) -- https://www.youtube.com/watch?v=4cDqaLxrt6Q
• 17:07
  FFmpeg trim: -to as input option vs -to as output option - jackmiller Newest 'ffmpeg' Questions - Stack Overflow
  Command 1: > ffmpeg -ss 01:00 -to 02:00 -i "input.mp4" "output.mp4" Cuts from 01:00 to 02:00. Command 2: > ffmpeg -ss 01:00 -i "input.mp4" -to 02:00 "output.mp4" Cuts from 01:00 to 03:00. I know, the parameter -ss as an input option, first seeks to the given position and then resets the input timestamps to 00:00. Hence, the second command cuts from 01:00 to 03:00 (in the new timestamps 00:00 to 02:00 is 01:00 to 03:00 in the original timestamps). But it's not the same in the first command. Why is that? Is it because in the first command, the (...)
• 15:40
  FFmpeg + RTSP + JSMpeg: Stream randomly rotates in browser - Lais Lemos Newest 'ffmpeg' Questions - Stack Overflow
  I'm streaming an RTSP camera to a web page using FFmpeg as the encoder and JSMpeg as the web player. The stream generally works fine, but sometimes — completely at random — the video rotates (usually 45 or 225 degrees) without any change in the code, camera settings, or stream configuration. This issue usually occurs after the server has been running for a while (one or two weeks). Currently, the only way to solve it is by restarting the Docker container that runs the server. Setup Source: IP camera via RTSP Streaming: FFmpeg reads the RTSP stream and sends it to (...) -- ,
• 13:57
  concat ffmpeg filter outputs wrong timebase, xfade cannot be used - Navarro Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to join several videos (removed for testing purposes) and images using xfade. In some cases, I don't want to use any transition, so instead of using xfade filter I'm using concat filter. This is the command: ffmpeg \\ -loop 1 -t 3 -framerate 30 -i f44096fb9e5ecff463aeedc56c5f4795 \\ -loop 1 -t 3 -framerate 30 -i 3a5ec4f224614a17ff4c7c77fe853233 \\ -loop 1 -t 3 -framerate 30 -i 3a5ec4f224614a17ff4c7c77fe853233 \\ -filter_complex " (...)

26 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:20
  FFmpeg: About filter_complex command - HJ Kim Newest 'ffmpeg' Questions - Stack Overflow
  I use this command. ffmpeg -i Input.mp4 -i logo.png -c:v h264_nvenc -filter_complex "[0:v]scale=-1:720[video];[1:v][video]scale2ref=(iw/ih)*ih/8/sar:ih/8[wm][base];[base][wm]overlay=10:10" output.mp4 But what does this mean? scale2ref=(iw/ih)*ih/8/sar:ih/8
• 07:35
  FFmpeg zoompan filter always arcs when panning — how to get a straight‐line pan to a focus rectangle center? - Mykyta Manuilenko Newest 'ffmpeg' Questions - Stack Overflow
  I’m trying to generate a 10s video from a single PNG image with FFmpeg’s zoompan filter, where the crop window zooms in from the image center and simultaneously pans in a perfectly straight line to the center of a predefined focus rectangle. My input parameters: "zoompan": "timings": "entry": 0.5, // show full frame "zoom": 1, // zoom-in/zoom-out timing "outro": 0.5 // show full frame in the end , "focusRect": "x": 1086.36, "y": 641.87, "width": 612.44, "height": 344.86 My input/output values: fps: (...)
• 01:13
  How to quote a file name with a single quote in ffmpeg movie= filter notation? [closed] - PieterV Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to run ffmpeg using a file that contains a single quote ' in the filename. I tried to follow the docs that say I should replace a ' with '\\''. And a ticket that says I should replace a ' with \\\\\\\\\\'. I've tried both, and can't get get it working. E.g. docs format: ./ffprobe -loglevel error -read_intervals %00:30 -select_streams s:0 -f lavfi -i "movie='D\\:\\\\Test\\\\Interlaced - Dragons'\\'' Den - S14E02 - Episode 2.mkv'[out0+subcc]" -show_packets -print_format (...) -- docs, ticket, escape filtergraph, filter script

25 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:08
  avcodec_find_encoder(AV_CODEC_ID_H264) returns null - Monjura Rumi Newest 'ffmpeg' Questions - Stack Overflow
  I am building an android application which will encode image captured from camera preview and later decode it. I am using ffmpeg library to encode and decode. To build static library with x264 I have used this tutorial. http://dl.dropbox.com/u/22605641/ffmpeg_android/main.html. As a source code of ffmpeg if I use the one downloaded from the link given in tutorial I can built it but can't build library if i use source code downloaded from here git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg. I have built library in ubuntu and using it in windows 7 in Eclipse. As I need only h264 (...)
• 18:12
  FFMPEG - can you have comments in script files? - rossmcm Newest 'ffmpeg' Questions - Stack Overflow
  Because of batch's poor ability to handle multi-line strings, I'm using FFMPEG script files more and more for filter_complex arguments. I'm wondering if there is any way to include comments in these files. They seem to be quite tolerant of white space and line breaks. I've tried: # # comment # and ; ; comment ; and ` ` comment ` and ' ' comment ' with no success. It doesn't look as if comments are officially supported, but I'm wondering of there is some (...)
• 16:39
  How can i burn in the current video playback percentage on to a video stream using FFMpeg - David Clews Newest 'ffmpeg' Questions - Stack Overflow
  I've taken alook at the drawtext filter in ffmpeg and it offers the ability to burn in the current local time directly on to the video stream. I would like this sort of behaviour but for a integer percentage value and the percentage symbol % after the actual value. I don't know if this is possible using FFMpeg on the command line. The formula should be something like. ceil((t/duration)*100)
• 09:01
  FFMPEG RTSP Stream timeout triggered after 30015.187000 ms - BatCoder Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to read several RTSP streams using opencv cv2.VideoCapture(URL). It has FFMPEG backend. Sometimes for few streams it is throwing timeout warning after 30 seconds. [ WARN:0ⓐ123.394] global cap_ffmpeg_impl.hpp:453 _opencv_ffmpeg_interrupt_callback Stream timeout triggered after 30015.187000 ms I tried setting up the timeout flag. import os os.environ["OPENCV_FFMPEG_CAPTURE_OPTIONS"] = "timeout;5000" # 5 seconds cv2.VideoCapture("rtsp://URL", cv2.CAP_FFMPEG) Ref: How to terminate cv2.VideoCapture(rtsp_url) call if execution stalls due to RTSP (...)

24 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:45
  Convert m3u8 (HLS) to mpd (MPEG-DASH) - Almog Newest 'ffmpeg' Questions - Stack Overflow
  I have Live stream of HLS [https://82-80-192-30.vidnt.com/ipbc_IPBCchannel11LVMRepeat/definst/IPBCchannel11LVM_3.stream/playlist.m3u8] and I want to convert it to MPEG-DASH. What is the best practice? The stream is already h264 aac therefore I understand I do not need to reencode and I just need to transmux. What should I use? ffmpeg? mp4box? Notes: I used nginx-rtmp-module (https://github.com/ut0mt8/nginx-rtmp-module/) in order to create DASH from RTMP stream according to this tutorial: (...) -- https://82-80-192-30.vidnt.com/ipbc_IPBCchannel11LVMRepeat/definst/IPBCchannel11LVM_3.stream/playlist.m3u8], https://github.com/ut0mt8/nginx-rtmp-module/, https://isrv.pw/html5-live-streaming-with-mpeg-dash
• 16:14
  How can I convert WebM files into M4A in flutter? - Sohail Anwar Newest 'ffmpeg' Questions - Stack Overflow
  Before that I was using ffmpeg_kit_flutter package for converting WebM files into M4A for both android and ios, Now this package was retired, Have any alternative of this package?
• 06:50
  How do you get FFMPEG to encode with vaapi? [closed] - dicroce Newest 'ffmpeg' Questions - Stack Overflow
  I've seen various examples of using libavcodec with vaapi to accelerated decoding, but how do you use it to accelerate encoding?

23 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:37
  Multicast video stream from Dahua IP surveillance camera - ffmpeg etc [closed] - Jaroslav Mazurak Newest 'ffmpeg' Questions - Stack Overflow
  I have a Dahua IP surveillance camera and want to get the video via a multicast stream. In the camera settings, I enabled Multicast streaming, IP 239.240.1.2, and port 40000 (the default). The RTSP port is 554 (the default). Neither VLC 3.0.21 nor ffmpeg 7.1.1 work when I try to use multicast. Both of them work when I use a unicast. OS is Windows 11 x64. Both applications are allowed in the Windows firewall (any protocol, all networks; same result if the firewall is disabled completely). I have Wireshark installed, and I see that when a client requests the stream via RTSP, the (...)
• 14:07
  What Is the Difference Between asetpts and atempo in FFmpeg Audio Filters? [closed] - Eric Stdlib Newest 'ffmpeg' Questions - Stack Overflow
  I have been using FFmpeg to slow down or speed up video files (with audio). It seems that to speed up a video, setpts=0.5*PTS should be used. However, when speeding up an audio, asetpts=0.5*PTS and atempo=2.0 are both available. What is the difference between these two options? Which is the better option?
• 08:24
  Title: FFmpeg and yt-dlp not working on Render.com deployment - Node.js YouTube video processing app - minhquan lavo Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a video processing application that: Downloads YouTube videos using yt-dlp Processes these videos with FFmpeg for: Cutting clips from the original video Adding captions/subtitles to the clips I'm struggling with getting both tools to work on Render.com deployment. Here's my setup: Backend Stack: Node.js Express FFmpeg-related packages: ⓐffmpeg-installer/ffmpeg: ^1.1.0 ⓐffprobe-installer/ffprobe: ^2.1.2 ffmpeg-static: ^5.2.0 fluent-ffmpeg: ^2.1.2 yt-dlp (...)
• 06:14
  How to dynamically overlay images with ffmpeg - Rorschy Newest 'ffmpeg' Questions - Stack Overflow
  As a part of a bigger project, I'm trying to stream a live feed using ffmpeg through RTSP while also dynamically changing subtitles depending on the situation. As of now, I'm able to live stream with no issue. I also came across a solution for the subtitles by using a text file. However, I'd like to avoid having this text file in my project. I thought about creating a picture with the subtitles and overlaying it with the screen stream. However, with my current solution, the data is streamed only when I kill the running code (data streamed for a few seconds).  (...)

22 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:12
  FFmpeg HLS input stream shows "Packet corrupt" and "timestamp discontinuity" errors when pushing to RTMP server [closed] - Amul Bhatia Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to restream an HLS URL (https://cache.fastcdn.com.my/edge/53-1.stream/index_0.m3u8?misc=87uq4HjbDEDE3TzIY95ja1ZMxA-Cm1PbOXAk16riVlU&uid=139322&ts=1747931206&e=43200&lat=1747931206&sil=5&sk=no&uip=MTEwLjIyNC4yNDIuOTg&head=aHR0cF94X2ZvcndhcmRlZF9mb3I&chid=53-1') into my RTMP server with FFmpeg. The command I use is: ffmpeg -i "https://cache.fastcdn.com.my/edge/53-1.stream/index_0.m3u8?misc=87uq4HjbDEDE3TzIY95ja1ZMxA-Cm1PbOXAk16riVlU&uid=139322&ts=1747931206&e=43200&lat=1747931206&sil=5&sk=no&uip=MTEwLjIyNC4y -- https://cache.fastcdn.com.my/edge/53-1.stream/index_0.m3u8?misc=87uq4HjbDEDE3TzIY95ja1ZMxA-Cm1PbOXAk16riVlU&uid=139322&ts=1747931206&e=43200&lat=1747931206&sil=5&sk=no&uip=MTEwLjIyNC4yNDIuOTg&head=aHR0cF94X2ZvcndhcmRlZF9mb3I&chid=53-1'

21 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:02
  How to implement in-browser video editing features in a React app? [closed] - Neeru Singh Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a React app that uses AI to generate short videos (reels, explainers, etc.). The generation works well, but I want users to edit the output directly in the browser. Key features I need in the frontend: Add/style captions Trim, split, and reorder clips Sync audio, apply transitions, and preview changes I'm considering a custom React-based editor with drag-and-drop, timeline editing, and real-time playback. Question: What’s the best approach to implement these features in-browser using React? Should I use with canvas/SVG overlays? How (...)
• 10:16
  openbase_dir preventing access to ffmpeg executable - Arthur Gorbana Newest 'ffmpeg' Questions - Stack Overflow
  I have installed FFMPEG on Ubuntu. In the console I ran whereis ffmpeg and I got this info: ffmpeg: /usr/bin/ffmpeg /usr/share/ffmpeg /usr/share/man/man1/ffmpeg.1.gz But when I enter the path on my website I get this error: I have PHP 8.4 and AAPANEL. Please can you help to make my Clipbucket V5 script work?
• 02:08
  How to fix "moov atom not found" error in ffmpeg? - user10664722 Newest 'ffmpeg' Questions - Stack Overflow
  Well, I'm using this project to create a Telegram bot which receives URL of .mp4 files, downloads them on server and uploads them to Telegram. Issue Everything works fine so far, except converting certain .mp4 files. For example if I use a sample .mp4 video from https://sample-videos.com/. Then it works fine and converts it successfully. But if I use a video from some random website which is also simple .mp4 file, it doesn't work and throws this error: [mov,mp4,m4a,3gp,3g2,mj2 ⓐ 0x1932420] Format mov,mp4,m4a,3gp,3g2,mj2 detected only with low score (...) -- this, https://sample-videos.com/

20 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:12
  How to Install FFmpeg on Databricks [closed] - Riley Cohen Newest 'ffmpeg' Questions - Stack Overflow
  I’m posting this to save others from the headache I went through getting ffmpeg running on Databricks. The process isn’t super intuitive, especially with Unity Catalog and volume-based restrictions, so here’s a clear step-by-step guide. Step #1: In Notebook Add init script for ffmpeg dbutils.fs.put( "dbfs:/Volumes/xxxxxxx/default/init/install_ffmpeg.sh", """#!/bin/bash apt-get update -y apt-get install -y ffmpeg """, overwrite=True ) Step #2 Add init script to allowed list Follow this (...) -- https://learn.microsoft.com/en-us/azure/databricks/data-governance/unity-catalog/manage-privileges/privileges#manage-allowlist,
• 14:18
  Encoding/Decoding H264 using libav in C++ [closed] - gbock93 Newest 'ffmpeg' Questions - Stack Overflow
  I want to build an application to capture frames in YUYV 4:2:2 format encode them to H264 send over network decode the received data display the video stream To do so I wrote 2 classes, H264Encoder and H264Decoder. I post only the .cpp contents, the .h are trivial: H264Encoder.cpp #include #include #include H264Encoder::H264Encoder(unsigned int width_, unsigned int height_, unsigned int fps_): m_width(width_), m_height(height_), m_fps(fps_), m_frame_index(0), m_context(nullptr),  (...) -- This article on encoding, This article on decoding
• 12:45
  ffmpeg conversion from h264 for webserver - Xav Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a system to record videos through RPi (picamera, h264 format), export (rsync) 10s segments of videos to a distant webserver, and trying to concatenate those segment into a single video file to read on the webserver. Simplified code to record on RPi: import os import datetime as dt import picamera camera = picamera.PiCamera() camera.resolution = (1920, 1080) camera.framerate = 25 duration = 10 #sec [...] camera.start_recording(filename, format='h264') while True: filename = (...) -- https://gist.github.com/jaydenseric/220c785d6289bcfd7366
• 08:18
  Generate video from images with ken burns effect using ffmpeg - user1615796 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to generate video from images. The following code generates the video, 1 frames per 3 seconds. exec("ffmpeg -f image2 -r 1/3 -loop_input -shortest -y -i tmp/image%3d.jpg -i tmp/ag1.mp3 -target ntsc-dvd -s 1280x720 tmp/video.mwv"); I want to apply ken burns effect to it, I have searched a lot but couldn't find any solution. Can anybody help me out ? If can provide any code snippet, will be really (...)
• 06:02
  How to record video and audio from webcam using ffmpeg on Windows? - Babu Newest 'ffmpeg' Questions - Stack Overflow
  I want to record video as well as audio from webcam using ffmpeg, I have used the following codes to know what devices are available: ffmpeg -list_devices true -f dshow -i dummy And got the result: ffmpeg version N-54082-g96b33dd Copyright (c) 2000-2013 the FFmpeg developers built on Jun 17 2013 02:05:16 with gcc 4.7.3 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray (...)

18 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:31
  Check if a video file has subtitles [closed] - TRS Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to check if a video file has a subtitle using bash and get a simple answer like "yes" or "no". I don't need to know any details about the subtitles. Maybe using ffmpeg?

17 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:04
  Increase volume on multiple files - Reckless Velociraptor Newest 'ffmpeg' Questions - Stack Overflow
  Let say I have a couple of hundreds mp3 files. How do I increase volume in all of them with ffmpeg? This is for single file: ffmpeg -i input.mp3 -filter:a "volume=1.5" output.mp3 And what about multiple files with one command?

16 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:54
  Black screen when recording specific screen / window using ffmpeg [closed] - Mark Brin Newest 'ffmpeg' Questions - Stack Overflow
  Issue: I'm trying to capture the specific window using ffmpeg & i've tried these below command for that: ffmpeg -f gdigrab -framerate 30 -i title="Window Title" -b:v 3M -pix_fmt yuv420p output_FILENAME.webm And also try changing output format to .mp4 ffmpeg -f gdigrab -framerate 30 -i title="Window Title" -b:v 3M -pix_fmt yuv420p output_FILENAME.mp4 but the output video just shows the black screen with cursor. What i've tried: Tried online solutions like Recording Screen with FFmpeg, How to record a specific window using (...)
• 09:18
  Converting mkv files to mp4 with ffmpeg-python - myth0s Newest 'ffmpeg' Questions - Stack Overflow
  I have a lot of .mkv files that I'm trying to convert to .mp4, so I decided to try and program a solution in python. After a few hours, trying to figure out how to copy the subfolders too, I gave up on it and decided to stick with converting individual subfolders, and then copying them over to another directory. I've made a simple script, that should convert .mkv files that are in the same folder as the script. However, I keep getting this error: FileNotFoundError: [WinError 2] The system cannot find the file specified Here's my code: import (...)

14 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:25
  How to interact with process output? - 1ben99 Newest 'ffmpeg' Questions - Stack Overflow
  Ok so at the moment I have a program which runs FFmpeg using a process in VB.net. I send the process arguments in the startinfo as well as other things like the file location. When I run the code it sends the console output to the debug console; this is probably because I have the .UseShellExecute = False and processInfo.RedirectStandardOutput = True My question is: How do I make something which can interpret the output? Also with FFmpeg, the process is continuous so the process is always running for the most part and constantly adding more output lines in the debug (...)
• 12:10
  How to correct faulty aspect ratio with FFMPEG when encoded in both stream and container - Kurt Fitzner Newest 'ffmpeg' Questions - Stack Overflow
  I have a video that I converted from the original in a way that seems to have poisoned the aspect ratio. The intended aspect ratio is 12:5 (2.4.:1) at 1920x800 with square pixels, but the cuda scale seems to have adjusted the storage aspect ratio. The video was created with: ffmpeg -analyzeduration 1000000000 -probesize 100G -loglevel warning -stats -hwaccel cuda \\ -hwaccel_output_format cuda -y -i "UHDSOURCE.mkv" -map 0:v? -c:v hevc_nvenc \\ -preset p7 -2pass true -multipass fullres -rc vbr -rc-lookahead 55 -b:v 1000k -minrate 0 -maxrate 3000k \\ -bufsize 120000k (...)
• 10:40
  Why are rectangular boxes ([]) showing instead of text in burned subtitles when using ffmpeg/MoviePy on Google Colab? - Lavish Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a Python script that adds subtitles to a video using MoviePy and burns/hardcodes them directly onto the video. The subtitles contain Hindi text, and I’ve specified a custom font that supports Devanagari (Hindi) script. The code works perfectly fine on my local machine, the subtitles appear correctly with Hindi characters. However, when I run the same code on Google Colab, the subtitles display as rectangular boxes (something like this -> [][][]) instead of proper characters. Things I've tried: Ensured the font used supports Hindi (I'm using (...)
• 03:25
  JavaFX media issue on Ubuntu : Could not create player - parsa2820 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to play mp3 file on JavaFX-11.0.2 on Ubuntu-20.04 using JDK-13.0.2 but I keep getting this same error every time. While I was searching for that I found that JavaFX uses older version of some libraries(See this issue on github). So I compiled and installed ffmpeg-3.1.11 from source. But the same exception is thrown. I put my code and error message bellow. I stuck on this for days so I really appreciate any help. Thanks. note : This is not duplicate qeustion. All other questions regarding to this error happend on different versions and had different causes. I tried most of (...) -- See this issue on github

13 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:24
  FFmpeg drawtext over multiple lines [closed] - Jay Newest 'ffmpeg' Questions - Stack Overflow
  I have the code: C:\\ffmpeg_10_6_11.exe -i C:\\test_in.avi -vf drawtext=fontfile=/Windows/Fonts/arial.ttf:text="onLine1 onLine2 onLine3":fontcolor=white:fontsize=20 -y C:\\test_out.avi to write text to a video file. But I want to write out many lines of text instead of just having it all on the one line. How can I do that?
• 18:29
  How to install MPD filter "ffmpeg" into MPD running on RaspberryPi [closed] - Weston Mitchell Newest 'ffmpeg' Questions - Stack Overflow
  I’m using Moode audio player OS on a Raspberry Pi 5 to play audio through two USB devices: headphones (card 3: Device_1) for the full spectrum and a subwoofer (card 0: Device) for low frequencies (20–100Hz) in a meditation lounge setup. The audio source is a NAS on a Mac. My goal is simultaneous playback: headphones in stereo, subwoofer in mono with low-pass filtering. I have configured the mpd.conf file to setup audio ouputs for both devices. Now I need to apply a lowpass filter to the subwoofer device. I tried using MDP's "ffmpeg" as a lowpass filter, but the logs say:  (...) -- MPD Docs - Filters
• 18:42
  How can I run FFPROBE in a Python script without triggering the Windows Command window? - fnord12 Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmeg/ffprobe to get video durations (in an addon for Kodi). The code: result = subprocess.run(["ffprobe", "-hide_banner", "-v", "quiet", "-show_entries", "format=duration", "-of", "default=noprint_wrappers=1:nokey=1", filename], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) The above code and the file importing that code both have a .pyw extension (after first trying regular .py). This works fine but in Windows 11 it causes the black Windows Command window to briefly flash for each video, despite the -hide_banner flag and loglevel being set to (...)
• 15:04
  Flutter ffmpeg_kit_flutter_new can't build Android app in any version - user31929 Newest 'ffmpeg' Questions - Stack Overflow
  I can't build my project on Android ( on Ios it works and the project itself without ffmpeg_kit_flutter_new builds without problems ) This is the error i obtain: /GeneratedPluginRegistrant.java:51: error: cannot find symbol com.antonkarpenko.ffmpegkit.MainActivity.registerWith(shimPluginRegistry.registrarFor("com.antonkarpenko.ffmpegkit.MainActivity")); ^ symbol: class MainActivity location: package com.antonkarpenko.ffmpegkit This is my flutter doctor : [✓] Flutter (Channel stable, 3.19.4, on macOS 15.4.1 24E263 darwin-x64, locale it-IT)  (...)
• 12:09
  FFMPEG subtitle only apply if the first subtitle in the source is default - the_hornest Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a batch script that should contain the following properties. Search for all MKV files in the folder and create a new MKV file with the same file name in another folder. The video track should be copied. The first audio track should be recreated with specific properties. The first subtitle track, if present, should only be copied if it is flagged by default. Everything else should be ignored. Here is my code created so far. FOR /F "tokens=*" %%G IN ('dir /b *.mkv') DO "D:\\Progs\\ffmpeg\\bin\\ffmpeg.exe" -i "%%G" -map 0:v:0 -map (...)
• 11:41
  v4l2loopback+ffmpeg input for uvc gadget - Mosi Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use an MP4 video file as the input for a UVC Gadget setup on my Raspberry Pi 4 Model B, but I'm running into an issue when streaming through V4L2. Goal: To emulate a webcam that streams a looping MP4 video file to a Windows 11 host. My setup: Hardware: Raspberry Pi 4 Model B OS: Raspberry Pi OS Lite 64-bit (2025-05-06-raspios-bookworm-arm64-lite) Kernel: 6.12.25+rpt-rpi-v8 Host System: Windows 11 UVC Gadget version: v0.3.0 Workflow: [MP4 Video] → [FFmpeg] → [V4L2 Loopback] → [UVC Gadget] → Windows sees virtual (...)
• 00:53
  How to correct aspect ratio - ffmpeg poisoned video - Kurt Fitzner Newest 'ffmpeg' Questions - Stack Overflow
  I have a video that I converted from the original in a way that seems to have poisoned my aspect ratio. The intended aspect ratio is 12:5 (2.4.:1) at 1920x800. The video was created with: ffmpeg -analyzeduration 1000000000 -probesize 100G -loglevel warning -stats -hwaccel cuda \\ -hwaccel_output_format cuda -y -i "UHDSOURCE.mkv" -map 0:v? -c:v hevc_nvenc \\ -preset p7 -2pass true -multipass fullres -rc vbr -rc-lookahead 55 -b:v 1000k -minrate 0 -maxrate 3000k \\ -bufsize 120000k -vf crop=3840:1600:0:280,scale_cuda=1920:800 -metadata title="HDDEST" \\ -map 0:a:2 (...)
• 00:15
  Apply multiple text filters at once and burn into video for captioning without re-encoding, and fix error [ffmpeg-python wrapper] - Baldi Newest 'ffmpeg' Questions - Stack Overflow
  Is there any way to burn text into a video without re-encoding? I ask this because the re-encoding process goes at around 0.1x speed on my device when writing to WEBM. Alternatively, if there is a faster way to render high quality video quickly while still re-encoding that would be great. I vaguely remember someone writing to a temporary file to solve this problem. Also small error in program, code attatched def processVideo(self): print("creating video") # File location management font_path = self.input_path / "CalSans-Regular.ttf" background_path = (...)

12 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:28
  How can I generate a video file directly from an FFmpeg filter with no actual input file? - blahdiblah Newest 'ffmpeg' Questions - Stack Overflow
  FFmpeg has a number of video generating filters, listed in the documentation as "video sources": cellauto color mptestsrc fei0r_src life nullsrc, rgbtestsrc, testsrc Those are great for using with other filters like overlay, but is there any way that I can generate a movie consisting of just one of those video sources without any input video? Something like: ffmpeg -vf color=red" red_movie.mp4 Except that that errors out with At least one input file must be (...)

11 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:07
  Ffmpeg rtmp to hls conversion but how to solve network issue? - Baka-Maru Lama Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert hls stream from rtmp source and its' working fine but the problem is when rtmp server is down or network issue the ffmpeg hls conversion process gets stuck and never comes to work again even if rtmp server is back online. I've tried -reconnect_at_eof 1 -reconnect_streamed 1 -reconnect_delay_max 5 command - it says option is not recognized options by the way I'm using ffmpeg [v4.2.1]. I'm using following ffmpeg commands ffmpeg -i rtmp://localhost/living/test ^ -max_muxing_queue_size (...)

10 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 05:31
  FFMPEG send RTP audio at 8k bytes/sec [closed] - Muzza Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use FFMPEG to mimick a device that transmits G711U audio over UDP/RTP at 8k bytes per second. The device im mimicking sends rtp packets every 20ms with 160byte payload. I've had limited success using the following command ffmpeg -f dshow -i audio="Microphone (Realtek(R) Audio)" -ac 1 -ar 8000 -ab 8 -acodec pcm_mulaw -f rtp rtp://127.0.0.1:12345?pkt_size=160 This sends G711U encoded audio, in 160byte chunks, but streams at 64kB/s, not the 8kB/s that my device is expected, so the device errors out? Any idea's would be massively (...) -- Wireshark Log
• 23:23
  Stream Recorder Using FFmpeg Fails on AWS Lambda - user30495567 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream audio from URLs and save them to a file in S3 using AWS Lambda with FFmpeg. Here is an example FFmpeg command I'm using: ffmpeg -hide_banner -loglevel error -t 10 -i http://playerservices.streamtheworld.com/api/livestream-redirect/KTOOFMAAC_SC -ar 16000 -b:a 64k -ac 2 output.mp3 The FFmpeg command is getting called in a python script using subprocess.Popen() The command works as expected on local, but does not work in an AWS Lambda python environment using a custom FFMPEG layer configured with these instructions. When run on Lambda, I (...) -- these instructions
• 22:37
  Unexpected error: No such file or directory: 'ffprobe', while using pydub in Digital Ocean - Cjmaret Newest 'ffmpeg' Questions - Stack Overflow
  I have an app that processes audio files and converts them to 'wav' format. This works locally on my Mac, however in DigitalOcean, when recording audio, i get the below error, followed by a 500: warn("Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning) Unexpected error: [Errno 2] No such file or directory: 'ffprobe' I've tried including binary files in my code for ffmpeg and ffprobe but got the same error. ffmpeg and ffprobe binaries are in /bin in the root of my project: from pydub import (...)

9 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:54
  Could someone please explain this filter graph? - Wynell Newest 'ffmpeg' Questions - Stack Overflow
  https://www.ffmpeg.org/doxygen/trunk/filtering_video_8c-example.html filter_graph = avfilter_graph_alloc(); // ... const AVFilter *buffersrc = avfilter_get_by_name("buffer"); const AVFilter *buffersink = avfilter_get_by_name("buffersink"); // ... /* buffer video source: the decoded frames from the decoder will be inserted here. */ snprintf(args, sizeof(args), "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d", dec_ctx->width, dec_ctx->height, dec_ctx->pix_fmt, time_base.num, time_base.den,  (...) -- https://www.ffmpeg.org/doxygen/trunk/filtering_video_8c-example.html
• 10:15
  Error importing VideoFileClip from moviepy : AttributeError: 'PermissionError' object has no attribute 'message' - Tahlil Newest 'ffmpeg' Questions - Stack Overflow
  I'm using jupyter notebook. I have also tried from anaconda console as well. Tried importing with both the ways shown below from moviepy.editor import VideoFileClip from moviepy.video.io.VideoFileClip import VideoFileClip Both of them gave me same error. Full trace is below AttributeError Traceback (most recent call last) in () 6 import glob 7 import math ----> 8 from moviepy.editor import VideoFileClip 9 from moviepy.video.io.VideoFileClip import VideoFileClip C:\\Program (...) -- here
• 10:06
  Scale image overlay over the time with ffmpeg - Nazarii Kahaniak Newest 'ffmpeg' Questions - Stack Overflow
  I have an overlay image and background video. I want to make the overlay 3 times bigger when 10 seconds of video pass, the scaling animation should take 1 second. Is it possible to do something like this with ffmpeg?
• 10:19
  Android FFmpegKit-Full dependencies missing - Adrián Primo Newest 'ffmpeg' Questions - Stack Overflow
  I've tried to compile the app on Android and now it won't run as it can't find these files. I knew the *FFmpegKit *project was going to remove its binaries so I downloaded the package locally but I totally forgot about Android's specific files. Launching lib\\main.dart on sdk gphone64 x86 64 in debug mode... Running Gradle task 'assembleDebug'... FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:checkDebugAarMetadata'. > Could not resolve all files for configuration (...) -- forked repository, Dependency in Maven Repository, Owner's files
• 10:18
  Flutter_ffmpeg is discontinued. Is there a way still to use it in a flutter project? - Saad Mushtaq Newest 'ffmpeg' Questions - Stack Overflow
  I have been using the flutter_ffmpeg package in a Flutter project. But now, when I run the project, I get a build failure exception. Is there a way to still use it in a Flutter project? FAILURE: Build failed with an exception. What went wrong: Execution failed for task ':app:checkDebugAarMetadata'. Could not resolve all files for configuration ':app:debugRuntimeClasspath'. Could not find com.arthenica:mobile-ffmpeg-https:4.4. Searched in the following locations: - (...) -- https://dl.google.com/dl/android/maven2/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom, https://repo.maven.apache.org/maven2/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom, https://storage.googleapis.com/download.flutter.io/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom, https://jcenter.bintray.com/com/arthenica/mobile-ffmpeg-https/4.4/mobile-ffmpeg-https-4.4.pom
• 10:15
  How to correctly pass Windows path with spaces to FFmpeg -vf ass filter in Python? - Utopia Newest 'ffmpeg' Questions - Stack Overflow
  ass_path = r'C:\\Users\\username\\Desktop\\Title Of Video.ass' command = [ 'ffmpeg', '-i', mp4_path, '-vf', f"ass='ass_path'", # Embed the full path in the filter string, with single quotes '-c:v', 'libx264', '-c:a', 'copy', output_path ] In the error message I'm getting this message: Unable to parse option value "UsersusernameDesktopTitle Of Video.ass" as image size. Somehow in the command it's stripping the \\ away and removed the C: Does (...)
• 10:20
  RN 0.74.7 can't find repo for ffmpeg-kit-react-native 6.0.2 - user938363 Newest 'ffmpeg' Questions - Stack Overflow
  My React Native 0.74.7 (on MacOS) app has hard time to find the ffmpeg-kit-react-native repo when run-android. It constantly complains no repo found on maven. Here is the error when react-native run-android: * What went wrong: Could not determine the dependencies of task ':app:processDebugResources'. > Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'. > Could not find com.arthenica:ffmpeg-kit-full-gpl:6.0. Searched in the following locations: - (...)

8 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:39
  Batch merge audio files by specific timestamp without reencoding - Saccarab Newest 'ffmpeg' Questions - Stack Overflow
  I want to batch merge mp3 audio files where every single file has a specific start time. So below is the fluent-ffmpeg spawn I use right now to merge 3 files with each starting at respectively 200, 7400 and 10600. ffmpeg -i firstFile.mp3 -i secondFile.mp3 -i thirdFile.mp3 -filter_complex [0]adelay=200[a0];[1]adelay=7400[a1];[2]adelay=10600[a2];[a0][a1] [a2]amix=inputs=3:dropout_transition=1000,volume=3 -f mp3 pipe:1 This works pretty good, except for longer files re-encoding makes the process take real long. So I wanted to do the same thing using concat (...)
• 16:24
  ffmpeg creating gif from images, how to prevent loop? - Geuis Newest 'ffmpeg' Questions - Stack Overflow
  I'm creating gifs from a small group of images. Currently the gif loops by default. I've been trying variations of -loop in the ffmpeg command, but the gif still loops. What's the right way to do this?
• 11:57
  Random audio/video sync issue with libcamera-vid + ffmpeg on raspberry pi 3a+ - kepperi Newest 'ffmpeg' Questions - Stack Overflow
  I have been working on camera software, which will stream live fullhd video to Cloudflare Stream via RTMPS protocol. Everything is mostly working nicely, but I have occasional A/V sync issues with the streams: Stream might start with correct A/V sync and it will stay correct until the end (1-2 h stream), but sometimes the A/V sync is misaligned like 1-2 sec so, that the audio is either behind or ahead of the video stream. And it will be like that until the end of the stream, then next stream might be just fine. I'm using libcamera-vid for the video and ffmpeg for the audio, (...) -- https://www.digikey.fi/fi/products/detail/seeed-technology-co-ltd/114992002/10451894
• 08:03
  ffmpeg, stretch audio to x seconds - Max Doumit Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make an audio file be exactly x second. So far i tried using the atempo filter by doing the following calculation Audio length / desired length = atempo. But this is not accurate, and I am having to tweak the tempo manually to get it to an exact fit. Are there any other solutions to get this work ? Or am I doing this incorrectly? My original file is a wav file, and my output in an mp3 Here is a sample command ffmpeg -i input.wav -codec:a libmp3lame -filter:a "atempo=0.9992323" -b:a 320K output.mp3 UPDATE: I was able to (...)

6 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:54
  Major quality loss when encoding with ffmpeg [closed] - Player_X_YT Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to edit videos in davinci resolve. It has limitations on what encoding I can import in the free version. I am trying to get around this by re-encoding the video file with ffmpeg. The following command is used to isolate the video track and encode it with mpeg-4: ffmpeg -y -i "$1" -an -vcodec mpeg4 "$1-VIDEO.mp4" However there is a significant loss in quality. I tried to force lossless quality but it doesn't change anything: ffmpeg -y -i "$1" -an -crf 0 -vcodec mpeg4 "$1-VIDEO.mp4" The video when rendered looks like it would when the bitrate (...)
• 16:05
  cmake installation of x265 for ffmpeg on Cygwin - executable location different from other codecs - bballdave025 Newest 'ffmpeg' Questions - Stack Overflow
  TL;DR (with expected vs. real) For a Cygwin build of ffmpeg, I'm installing x265, and it seems to me that the executable ends up in the wrong place. I'll show some basic directory structure, then I'll show the tree outputs for expected and real, both before and after the cmake installation. For directories where I think this is important, I'll show the outputs before and after the cmake installation. My question has two parts. I used the following cmake and make commands, # pwd => (...) -- pastebin.com/86wHrtxR, on my GitHub, an older guide by koohiimaster, archived, this ffmpeg-for-Ubuntu guide, archived, pastebin.com/suL1nU6Z, gist, Useful Variables page, archived, this thread at cmake.org, archived
• 14:38
  Button "Clean FFMeta" does nothing after compiling with PyInstaller - Leonie Holdermann Newest 'ffmpeg' Questions - Stack Overflow
  I’m working on my first Python project and I’ve compiled it into an executable using PyInstaller with the following command: pyinstaller --onefile --noconsole app.py However, when I run the executable, the button "Clean FFMeta" which triggers the clean_ffmeta() function does nothing. Additionally, changing the language or the chapter settings under the "Options -> Chapter settings" menu doesn’t seem to affect anything either. It all works perfectly in the Python script before compilation, but once compiled into an .exe, none of these functions respond. I've reviewed (...) -- https://www.pythonmorsels.com/p/32hkh/
• 12:10
  Error Installing mobile-ffmpeg-full-gpl (4.4.LTS) via CocoaPods - 404 Not Found - Muhammad Accucia Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to install mobile-ffmpeg-full-gpl (4.4.LTS) in my iOS project using CocoaPods, but I am encountering a 404 error when CocoaPods attempts to download the framework. Here is the error message: \\[!\\] Error installing mobile-ffmpeg-full-gpl \\[!\\] /usr/bin/curl -f -L -o /var/folders/78/lk7swzb97ml4dt3zd9grny0c0000gn/T/d20250201-6580-dtli8h/file.zip https://github.com/tanersener/mobile-ffmpeg/releases/download/v4.4.LTS/mobile-ffmpeg-full-gpl-4.4.LTS-ios-framework.zip --create-dirs --netrc-optional --retry 2 -A 'CocoaPods/1.15.2 (...)
• 10:01
  FFMPEG File Output is Still in Use By a Process - Tyler Bacon Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to complete this part of my program. In this section, I am trying to speed up or slow down a video based on a factor variable. Once it's done, I use moviepy to turn it into a VideoFileClip, then I delete the file. if factor <= 2: system("ffmpeg -i " + paths[dex] + " -vf setpts=" + str(vfactor) + "*PTS -an ./Media/Videos/temp.mp4") system("ffmpeg -i " + paths[dex] + " -filter:a atempo=" + str(factor) + " -vn ./Media/ShortSounds/temp.mp3") elif 2 < factor < 4: factor = round(sqrt(factor), 1)  (...)
• 07:41
  ffmpeg pipe process ends right after writing first buffer data to input stream and does not keep running - Taketo Matsunaga Newest 'ffmpeg' Questions - Stack Overflow
  I have been trying to convert 16bit PCM (s16le) audio data to webm using ffmpeg in C#. But the process ends right after the writing the first buffer data to standard input. I has exited with the status 0, meaning success. But do not know why.... Could anyone tell me why? I apprecite it if you could support me. public class SpeechService : ISpeechService /// /// Defines the _audioInputStream /// private readonly MemoryStream _audioInputStream = new MemoryStream(); public async Task SendPcmAsWebmViaWebSocketAsync(  (...)

5 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:00
  MoviePY write_videofile using GPU for faster encoding [closed] - kaushal Newest 'ffmpeg' Questions - Stack Overflow
  I'm creating a video from scratch using moviePY. I am generating all the required frames, adding required audio (including a voiceover and background music), adding a logo and finally writing the video file in 4K. Everything works fine, except the write_videofile takes a lot of time. I have read many related posts which mentions using the right codec etc. I have NVidia card, so tried both h264_nvenc and hevc_nvenc. Quality of the output video dropped with the first one, so I'm sticking to hevc_nvenc. I'm using below line to write the file.  (...) --
• 07:56
  Live streaming webvtt subtitles with HLS protocol - Victor Ruiz Newest 'ffmpeg' Questions - Stack Overflow
  I need a tool to generate HLS subtitles in live mode. Specifically, I want to create an HTTP server that serves .m3u8 and .webvtt files which are continuously updated over time. Such HLS stream could be consumed via HTTP requests by HLS JS/ffplay multimedia players. The .webvtt files will be generated by an automatic transcriber, so the program must update the .m3u8 playlist accordingly whenever a new subtitle is produced. I only want to stream subtitle channels—no audio. The video channel can simply display a black chroma background. I attempted to use FFmpeg with a (...)
• 01:38
  Send image and audio data to FFmpeg via named pipes - Nicke Manarin Newest 'ffmpeg' Questions - Stack Overflow
  I'm able to send frames one by one to FFmpeg via a name pipe to create a video out of them, but if I try sending audio to a second named pipe, FFmpeg only accepts 1 frame in the frame pipe and starts reading from the audio pipe soon after it. ffmpeg.exe -loglevel debug -hwaccel auto -f:v rawvideo -r 25 -pix_fmt bgra -video_size 782x601 -i \\\\.\\pipe\\video_to_ffmpeg -f:a s16le -ac 2 -ar 48000 -i \\\\.\\pipe\\audio_to_ffmpeg -c:v libx264 -preset fast -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -crf 23 -f:v mp4 -vsync vfr -c:a aac -b:a 128k -ar 48000 (...)

3 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:51
  Streaming different MP3 files using Ezstream and Icecast - hh083 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream two MP3 files to Icecast using Ezstream and the stream should run in web browsers. The files I am testing with were downloaded as webm and converted to MP3 using ffmpeg. They have the same channels count, same bitrate and same sample rate but different duration. My setup: the Ezstream xml configuration file is set to stream MP3 and a program playlist is used to identify what is the next file to be streamed, and no encoders or decoders are used. When I start streaming I save the process ID of the Ezstream process (using the -p argument), and then I use the (...)
• 18:52
  ffmpeg not honoring sample rate in opus output - Adam Newest 'ffmpeg' Questions - Stack Overflow
  I am capturing a live audio stream to Opus, and no matter what I choose for the audio sample rate, I get 48khz output. This is my command line ./ffmpeg -f alsa -ar 16000 -i sysdefault:CARD=CODEC -f alsa -ar 16000 -i sysdefault:CARD=CODEC_1 -filter_complex join=inputs=2:channel_layout=stereo:map=0.1-FR\\|1.0-FL,asetpts=expr=N/SR/TB -ar 16000 -ab 64k -c:a opus -vbr off -compression_level 5 output.ogg And this is what ffmpeg responds with: Output #0, ogg, to 'output.ogg': Metadata: encoder : Lavf57.48.100 Stream #0:0: Audio: opus (...)

2 mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:58
  opencv read error:[h264 ⓐ 0x8f915e0] error while decoding MB 53 20, bytestream -7 - Alex Luya Newest 'ffmpeg' Questions - Stack Overflow
  My configuration: ubuntu 16.04 opencv 3.3.1 gcc version 5.4.0 20160609 ffmpeg version 3.4.2-1~16.04.york0 and I built opencv with: cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D PYTHON_EXECUTABLE=$(which python) -D OPENCV_EXTRA_MODULES_PATH=/home/xxx/opencv_contrib/modules -D WITH_QT=ON -D WITH_OPENGL=ON -D WITH_IPP=ON -D WITH_OPENNI2=ON -D WITH_V4L=ON -D WITH_FFMPEG=ON -D WITH_GSTREAMER=OFF -D WITH_OPENMP=ON -D WITH_VTK=ON -D BUILD_opencv_java=OFF -D BUILD_opencv_python3=OFF -D WITH_CUDA=ON -D ENABLE_FAST_MATH=1 -D (...)
• 06:00
  ffmpeg.wasm in Angular 19 - Yashar Tabrizi Newest 'ffmpeg' Questions - Stack Overflow
  I am developing an Angular app that records videos. Since the videos that come out usually have variable and "wrong" framerates, I want to re-encode them using FFmpeg, particularly ffmpeg.wasm. I have installed the packages ⓐffmpeg/ffmpeg, ⓐffmpeg/core and ⓐffmpeg/util and I have written the following worker ffmpeg.worker.ts to do the initialization and to execute the FFmpeg processing: /// import FFmpeg from 'ⓐffmpeg/ffmpeg'; import toBlobURL from 'ⓐffmpeg/util'; const baseURL = (...)

1er mai

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:58
  FFMPEG repeated non-monotonic DTS error despite re-encoding and multiple fixes [closed] - World of Depth Newest 'ffmpeg' Questions - Stack Overflow
  I have four MP4 files I'm trying to concat. After following the advice in many posts, and many MANY tries, I've gotten it to the point where the concatenated file now plays back, with video and audio, but I still get the following error when processing the 4th file, and suspect that if I add a 5th it won't work again. [aost#0:1/copy ⓐ 0x135714fd0] Non-monotonic DTS; previous: 579108, current: 577078; changing to 579109. This may result in incorrect timestamps in the output file. [aost#0:1/copy ⓐ 0x135714fd0] Non-monotonic DTS; previous: 579109, current: 578102; (...)
• 13:17
  get specific metadata with ffprobe - mikem Newest 'ffmpeg' Questions - Stack Overflow
  I'm having a terrible time getting one single line of metadata from ffprobe. I'm running this command: ffprobe -show_entries 'stream_tags : format_tags=com.apple.quicktime.creationdate' -loglevel error IMG_9931.MOV And I get this output [STREAM] TAG:creation_time=2022-05-14T20:24:55.000000Z TAG:language=und TAG:handler_name=Core Media Video TAG:encoder=H.264 [/STREAM] [STREAM] TAG:creation_time=2022-05-14T20:24:55.000000Z TAG:language=und TAG:handler_name=Core Media Audio  (...)
• 07:06
  Why can't I seek using PTS while reading an MXF file until av_write_trailer() is called? - Summit Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing an MXF file using FFmpeg in C++ and then reading it back for real-time playback. However, I'm running into a problem: seeking by PTS (av_seek_frame()) doesn't work properly until I call av_write_trailer() at the end of the writing session. Here’s the workflow: I'm encoding and writing frames to an MXF file using avformat_write_header() and av_interleaved_write_frame(). I want to read from the same file while it’s still being written (like a growing file or EVS-style live playback). But seeking using av_seek_frame() to a specific (...)

30 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:35
  Flutter ffmpeg_kit_flutter_full_gpl-6.0.3 PluginRegistry.Registrar flutter version 3.29 - Lisa Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg_kit_flutter_full_gpl-6.0.3 for flutter version 3.27 but when upgrading to flutter 3.29, with android, there is an error PluginRegistry.Registrar registrar. Is there any solution to replace the current ffmpeg_kit_flutter_full_gpl because I see this library was updated 17 months ago /Users/pamcd/.pub-cache/hosted/pub.dev/ffmpeg_kit_flutter_full_gpl-6.0.3/android/src/main/java/com/arthenica/ffmpegkit/flutter/FFmpegKitFlutterPlugin.java:157: error: cannot find symbol public static void registerWith(final io.flutter.plugin.common.PluginRegistry.Registrar registrar) (...)
• 10:37
  Difference behaviour between Ubuntu and Windows for popen, _popen - Humam Helfawi Newest 'ffmpeg' Questions - Stack Overflow
  I need to open FFMPEG pipe and write frames data to that pipe. I am using this code: #ifdef _WIN32 #define POPEN _popen #define PCLOSE _pclose #else #define POPEN popen #define PCLOSE pclose #endif // FFmpeg command to receive raw BGR24 data and encode with libx264 std::ostringstream oss; oss << "ffmpeg -y -f rawvideo -pixel_format bgr24 " << "-video_size " << width << "x" << height << " " << "-framerate " << fps << " -i - " << "-c:v libx264 -preset ultrafast "  (...)

29 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 06:16
  ffmpeg : Stream specifiers per format/codec [closed] - nathan wurtz Newest 'ffmpeg' Questions - Stack Overflow
  I was wondering if it were possible to select all the stream in a specific format. Example : Stream #0:0(eng): Video: h264 (High), yuv420p(tv, smpte170m/smpte170m/bt709, progressive), 710x480 [SAR 32:27 DAR 142:81], SAR 841:710 DAR 841:480, 29.97 fps, 29.97 tbr, 1k tbn, 180k tbc (default) Stream #0:1(deu): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default) Stream #0:2(deu): Subtitle: dvd_subtitle, 720x480 Stream #0:3(eng): Subtitle: dvd_subtitle, 720x480 Stream #0:4(fra): Subtitle: dvd_subtitle, 720x480 Stream #0:5(spa): Subtitle: dvd_subtitle, (...) -- https://ffmpeg.org/ffmpeg.html#Stream-specifiers
• 13:47
  FFmpeg webcam image capture from default Windows webcam - Mark Ryan Newest 'ffmpeg' Questions - Stack Overflow
  I want to capture a webcam image from my default Windows webcam without specifying the webcam name and save it as a JPG. I also want to scale and crop it to 640x480. I have come up with - ffmpeg -f dshow -i "video=EasyCamera" -vf scale=-1:480,crop=640:480 -frames:v 1 test.jpg -y And it works fine, but I want to be able to be able to capture the image without having to specify the camera name. Is this possible? I have been able to do it with the following - ffmpeg.exe -f vfwcap -i 0 -vf scale=-1:480,crop=640:480 -frames:v 1 test.jpg -y But vfwcap is very old (...)
• 10:51
  Can't set seeker in GSTREAMER cv2, python - Alperen Ölçer Newest 'ffmpeg' Questions - Stack Overflow
  I want to skip n seconds forward and backward in gstreamer cv2 capture for recorded videos. But when I use cap_gstreamer.set(cv2.CAP_PROP_POS_FRAMES, fps*skip_second) it resets seeker to beginning of video. How can I solve it? I wrote an example, used recorded clock video. import cv2 video_p = '/home/alperenlcr/Videos/clock.mp4' cap_gstreamer = cv2.VideoCapture(video_p, cv2.CAP_GSTREAMER) cap_ffmpeg = cv2.VideoCapture(video_p, cv2.CAP_FFMPEG) fps = cap_gstreamer.get(cv2.CAP_PROP_FPS) skip_second = 100 im1 = (...) --
• 09:26
  How to add dynamic captions with animations on a video in a cross-platform Android & iOS app and export it as a final video? [closed] - Danial Qsk Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a cross-platform mobile app using Flutter (or React Native) where users can: Add dynamic text captions with animations over a video, similar to TikTok See these changes in real-time during video playback Export the video with the animated captions burned into the output (e.g., MP4) What I’ve implemented so far: Video playback using video_player in Flutter (or react-native-video). Captions are rendered using Canvas/UI layer during playback. Problem: While I can overlay animated text in the UI, I can't figure out how to include these (...)
• 03:17
  ffmpeg - Any way to add a transition to a list of clips to combine into a single video? - J. Pena Newest 'ffmpeg' Questions - Stack Overflow
  Let's say I have a directory with 5 videos with the titles listed as the following 1.mp4 2.mp4 3.mp4 4.mp4 5.mp4 I created the text file named mylist.txt with the following written. file '1.mp4' file '2.mp4' file '3.mp4' file '4.mp4' file '5.mp4' I have an ffmpeg command that will combine these clips into one file beautifully already using the text file. ffmpeg -f concat -safe 0 -i mylist.txt -c copy combined.mp4 My question is how can I add a fade (...)

28 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:01
  Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. - Marc Archenault Newest 'ffmpeg' Questions - Stack Overflow
  I am receiving this warning from ffmpeg. The job runs and all the videos seem to output correctly. I have 2 hls, 1 mp4 with overlay + A single thumbnail. The warning: Stream #1:0: Video: png, rgba(pc), 500x38, 25 tbr, 25 tbn, 25 tbc Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of s ome encoder which was not actually used for any stream. The windows (...)
• 10:15
  Long video files are shortened when exported [closed] - Mathilda Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on videos with a maximal length of 23h59m59s (let's say 24h). I wanted to do several modifications on these videos, including dividing them into smaller parts and converting them into images. I'm doing it with Python in the Anaconda interface. My 24-hour videos are properly read by the Windows "Films & TV" player. They are also properly read by VLC media player. However, as soon as I try to use them: in editing software (Movavi); on an online editing site (Video-cutter); on Python (cv2 and moviepy packages); or on ffmpeg  (...) -- Movavi, Video-cutter
• 10:51
  FFmpeg container is unable to communicate to my application container in Quarkus [duplicate] - Abhi11 Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a application where i am running different container such as clamav,postgres,my quarkus application.all the configuration is defined in docker compose file.now i want to perform some operation on file that's why want to use ffmpeg. i am using ffmpeg as separate container and connected via docker network.i want to execute some ffmpeg command for example check version and other advance.I'm getting error. Please help me to solve this. My docker-compose.yml -- version: "3.8" services: clamav: image: clamav/clamav:latest container_name: (...)

27 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 01:27
  How to properly configure FFmpeg with libsvtav1 parameters to achieve smaller file sizes than H.264? [closed] - Satyam Manoj Singh Newest 'ffmpeg' Questions - Stack Overflow
  I'm implementing a video transcoding pipeline using FFmpeg's libsvtav1 encoder, but encountering unexpected results when trying to batch process 10 H.264 videos (each ~5 minutes). Current Implementation: // Command line implementation ffmpeg -i input.mp4 -c:v libsvtav1 -crf 24 -y output_crf24.mp4 // Also tried ffmpeg -i input.mp4 -c:v libsvtav1 -crf 30 -y output_crf30.mp4 Problem: Despite using CRF values that should theoretically reduce file size (24 and 30), all resulting AV1 files are larger than their H.264 originals: Original (...)
• 22:09
  ffmpeg scale down video dynamically (squeeze-back) or zoompan out to smaller than original - Sam Newest 'ffmpeg' Questions - Stack Overflow
  I have 2 videos, I'm trying to overlay one on top of the other, and have it shrink down in an animated fashion until it appears like a picture-in-picture setup. Then, after a few seconds it should scale back up. This is what I am trying to achieve (these would be videos, not images): This is the closest I've been able to get, but, crucially, zoompanning "out" (as opposed to "in") does not appear to work; so, of course, this does not work: ffmpeg -i bg.mov -i top.mov -filter_complex "[0:v]zoompan=z='pzoom-0.1':d=1, setpts=PTS-STARTPTS[top]; (...) --

26 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:49
  Error installing ffmpeg-kit-ios-full-gpl (ios) , requested URL returned error: 404 - codnix dev Newest 'ffmpeg' Questions - Stack Overflow
  I am using this library in my project :- ffmpeg_kit_flutter_full_gpl: ^6.0.3. I am getting the error :- when trying to run pod install it show that it cannot already find the link where to download the zip file and responded 404 usr/bin/curl -f -L -o /var/folders/0q/cmpgdyp97dlf1ljyc63g71lm0000hy/T/d20250402-65474-7s1bkn/file.zip https://github.com/arthenica/ffmpeg-kit/releases/download/v6.0/ffmpeg-kit-full-gpl-6.0-ios-xcframework.zip --create-dirs --netrc-optional --retry 2 -A 'CocoaPods/1.16.2 cocoapods-downloader/2.1'. The requested URL returned error: (...) -- https://github.com/arthenica/ffmpeg-kit/releases/download/v6.0/ffmpeg-kit-full-gpl-6.0-ios-xcframework.zip

25 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:20
  Convert .png segment of HLS to mp3 - Maxim Newest 'ffmpeg' Questions - Stack Overflow
  I have url of HLS: https://9str-m3u8-play-021024.playm4u.xyz/m3u8/tp1-rdv1/1080/642bce856edd7cab511931a2/647af249adaf446b461a374e/53616c7465645f5f3ec139a78aff102a8e3a3c62ae8f3826f32bf6f19ea4b1fb/1735825697/2a2415eaeec82cbf16cebbf974a372e0 It contains links to segments: #EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:6 #EXT-X-PLAYLIST-TYPE:VOD #EXTINF:6, https://9str-rd.playm4u.xyz/9str-rd-tp1v1/1080/642bce856edd7cab511931a2/cdebe91fd08cdb6d79827cca6c41007927d1e7a824e88d90e17fc925d914a006873ed08c7ecb7107e7a72b810e66a2cf/0292b734e3b0d7dacb586869beac1f91281543d90d -- https://9str-m3u8-play-021024.playm4u.xyz/m3u8/tp1-rdv1/1080/642bce856edd7cab511931a2/647af249adaf446b461a374e/53616c7465645f5f3ec139a78aff102a8e3a3c62ae8f3826f32bf6f19ea4b1fb/1735825697/2a2415eaeec82cbf16cebbf974a372e0, https://i.sstatic.net/pajvO7fg.png, https://drive.google.com/file/d/1i-LERY8kEYVZgS8mX9mCoMWd3To4Fk2T/view?usp=sharing, https://ww2.movie123.club/watch/tci7-pulp-fiction-1994-movie-online-free-123movies.html
• 18:23
  How to Install ffmpeg on aws lambda machine? - Martin Blaustein Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to run a node js script on AWS lambda that uses ffmpeg. To do this, I need to install ffmpeg on the machine itself. I have looked through the documentation but I could not find how to connect to the machine that runs the lambda.
• 14:25
  Remove Rotate metadata from mp4 - mbajur Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to remove or modify a rotate param from my mp4 file using ffmpeg. Based on some google results, i've ended up with such command (i've tried a few more but none of them worked): $ ffmpeg -i ./source.mp4 -metadata rotate=0 ./output.mp4 But it's not working at all. The rotate=270 metadata param is still there in the output file. Can you please advise me on how it should be done? I'm using ffmpeg version 1.2.4 Copyright (c) 2000-2013 the FFmpeg developers built on Dec 9 2013 20:00:03 with Apple LLVM version (...)
• 00:04
  Converting DAV to MP4 and OGG - mackowiakp Newest 'ffmpeg' Questions - Stack Overflow
  I want to prepare WEB page containing films from security camera recorders. Each recorder transmit video files in DAV format so each film is converted to MP4 format by script, using such syntax: ffmpeg -y -i movie.dav -vcodec libx264 -crf 24 movie.mp4 So I included in HTMLv5 code such entry: It works correctly with Chrome but not with Firefox. For proper work in FF it is necessary add link to OGG file. So correct HTMLv5 syntax for both browsers should look like this: Can anybody help (...)

24 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:38
  How to cleanup data to reuse ffmpeg.wasm instance - rickyz Newest 'ffmpeg' Questions - Stack Overflow
  I have multiple files that I am trying to process back to back using ffmpeg.wasm. I have noticed that after around ~150 runs, a memory issue comes up: RuntimeError: memory access out of bounds. I tried doing cleanup using ffmpeg.deleteFile() on both the input and output files after every run, but that didn't make a difference. Is there something I am missing that will allow me to reuse the ffmpeg instance as many times as I want? If I can avoid it, I do not want to have to call ffmpeg.terminate() after each use since loading ffmpeg for the next use takes a long time (~.5 secs on (...)
• 18:38
  Failed to add audio to mp4 with moviepy - D G Newest 'ffmpeg' Questions - Stack Overflow
  I generated an audio sound.wav and a video temp.mp4 that makes use of the audio. Both with the same duration. I got the following warning when generating the temp.mp4. The animation is out of sync, it means that it freezes before the audio finishes. .venv\\Lib\\site-packages\\moviepy\\video\\io\\ffmpeg_reader.py:178: UserWarning: In file temp.mp4, 1080000 bytes wanted but 0 bytes read at frame index 299 (out of a total 300 frames), at time 4.98/5.00 sec. Using the last valid frame instead. warnings.warn( Complete code: # to generate sound.wav import (...) --
• 05:49
  Why is my AV1-encoded video (libsvtav1) larger than the original H.264? [closed] - Ramyashree Pramanik Newest 'ffmpeg' Questions - Stack Overflow
  I’m trying to compress a batch of 10 H.264 videos (each ~5 minutes long) using the SVT-AV1 encoder via FFmpeg. Surprisingly, for all of them, the resulting AV1 file sizes are larger than the originals even when using -crf 24 or -crf 30, which I expected to reduce file size. Original Video Info (H.264) File: 16.mp4, Codec: H.264 (High profile), Resolution: 1280x960, Duration: 5:00 minutes, Bitrate: ~1463 kb/s FFprobe output: Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x960, 1460 kb/s, 30 fps Encoded AV1 Video Info (Example: CRF 24)  (...)

23 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 05:45
  RTMP Disconnects quickly when the stream is turned on and No index.m3u8 files are being generated in the assigned directory [closed] - Kartik Salve Newest 'ffmpeg' Questions - Stack Overflow
  23/4/2025 09:52:58 9408 [INFO] [rtmp connect] id=7K1RWSO1 ip=::1 app=live args="app":"live","flashVer":"LNX 9,0,124,2","tcUrl":"rtmp://localhost:1935/live","fpad":false,"capabilities":15,"audioCodecs":4071,"videoCodecs":252,"videoFunction":1 23/4/2025 09:52:58 9408 [INFO] [rtmp play] Join stream. id=7K1RWSO1 streamPath=/live/test streamId=1 23/4/2025 09:52:59 9408 [INFO] [rtmp play] Close stream. id=7K1RWSO1 streamPath=/live/test streamId=1 23/4/2025 09:52:59 9408 [INFO] [rtmp disconnect] id=7K1RWSO1 These are the logs, ffmpeg pushes the stream in a different folder (...)
• 04:28
  How to fix here "EPIPE" in Node js Socket.io - Mehdi008 Newest 'ffmpeg' Questions - Stack Overflow
  Receiving this error: Error: write EPIPE at afterWriteDispatched (node:internal/stream_base_commons:161:15) at writeGeneric (node:internal/stream_base_commons:152:3) at Socket._writeGeneric (node:net:958:11) at Socket._write (node:net:970:8) at doWrite (node:internal/streams/writable:598:12) at clearBuffer (node:internal/streams/writable:783:7) at onwrite (node:internal/streams/writable:653:7) at WriteWrap.onWriteComplete [as oncomplete] (node:internal/stream_base_commons:107:10) Emitted 'error' event on Socket instance at:  (...)

22 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:00
  How to Terminate a Process Normally Created using ProcessBuilder - Bilal Ahmed Yaseen Newest 'ffmpeg' Questions - Stack Overflow
  I am creating Processes using ProcessBuilder in my Java Application. The created process executes some FFMPEG commands which actually copy the RTSP streams in specified destination media file. ProcessBuilder builder = new ProcessBuilder("ffmpeg", "-i", RTSP_URL, "-f", fileFormat, destFilePath); Process processToExecute = builder.start(); I want to close the process before it completes its execution. So, If I run this FFMPEG command directly in windows CMD and then press 'CTRL+C' after 5 seconds then process get terminates with status '2'. And I (...)
• 14:01
  How to fill an AVFrame structure in order to encode an YUY2 video (or UYVY) into H265 - Rich Deng Newest 'ffmpeg' Questions - Stack Overflow
  I want to compress a video stream in YUY2 or UYVY format to, say H265. If I understand the answers given this thread correctly, I should be able use the function av_image_fill_arrays() to fill the data and linesize arrays of an AVFrame object, call avcodec_send_frame(), and then avcodec_receive_packet() to get encoded data: bool VideoEncoder::Init(const AM_MEDIA_TYPE* pMediaType) // we should have a valid pointer if (pMediaType) m_mtInput.Empty(); m_mtInput.Set(*pMediaType); else return false; // find encoder m_pCodec = (...)
• 08:27
  mobile-ffmpeg-https (4.3.1) POD install failed - shruti tupkari Newest 'ffmpeg' Questions - Stack Overflow
  I am getting error on my pod install command , Error creating package is mobile-ffmpeg-https (4.3.1). Image attached for more details. Actually i have not used this package anywhere in my project. I tried to use it and then removed it from project. But i am not getting why this is still showing up in pod install. i tried deleting my podfile.lock and again running pod install but issue remains. thanks in advance . --
• 04:42
  libavcodec.so.58 not found when running software compiled with opencv - Abinaya Newest 'ffmpeg' Questions - Stack Overflow
  I am using ubuntu 22.04. Now every time I try to run software compiled with Opencv, I get the following error: `libavcodec.so.58 => not found libavformat.so.58 => not found libavutil.so.56 => not found libswscale.so.5 => not found ` Looking around /lib/x86_64-linux-gnu/, I can find libavcodec.so.59, but not libavcodec.so.58. When trying to run sudo apt-get install libavcodec58, I get: Package 'libavcodec58' has no installation candidate I've scoured the internet in search of an answer, but could not find anything at this (...)

21 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:34
  Ffmpeg command not streaming to youtube [closed] - Ahmed Seddik Bouchiba Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream my desktop (from an X11 session) to YouTube Live using ffmpeg. I'm running this on a Linux machine with an active X server, and I set the DISPLAY variable accordingly (:0 in most cases). Here's the ffmpeg command I've tried: ffmpeg -loglevel info \\ -probesize $PROBESIZE -analyzeduration $ANALYZE_DURATION \\ -f x11grab -video_size $VIDEO_SIZE -r $FRAME_RATE -draw_mouse 0 -i $DISPLAY \\ -f alsa -i default \\ -deinterlace -vcodec libx264 -pix_fmt yuv420p -preset fast \\ -r 30 -g 60 -b:v 2000k -bufsize 4000k \\ -acodec (...)
• 17:41
  How to stream to YouTube from an X server using DISPLAY with ffmpeg? [closed] - Ahmed Seddik Bouchiba Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream my desktop (from an X11 session) to YouTube Live using ffmpeg. I'm running this on a Linux machine with an active X server, and I set the DISPLAY variable accordingly (:0 in most cases). Here's the ffmpeg command I've tried: ffmpeg -loglevel info \\ -probesize $PROBESIZE -analyzeduration $ANALYZE_DURATION \\ -f x11grab -video_size $VIDEO_SIZE -r $FRAME_RATE -draw_mouse 0 -i $DISPLAY \\ -f alsa -i default \\ -deinterlace -vcodec libx264 -pix_fmt yuv420p -preset fast \\ -r 30 -g 60 -b:v 2000k -bufsize 4000k \\ -acodec (...)
• 12:49
  Python add audio to video using opencv or other library - olokelo Newest 'ffmpeg' Questions - Stack Overflow
  I use python cv2 module to join jpg frames into video, but I can't add audio to it. Is it possible to add audio to video in python without ffmpeg?
• 10:10
  Python add audio to video opencv - olokelo Newest 'ffmpeg' Questions - Stack Overflow
  I use python cv2 module to join jpg frames into video, but I can't add audio to it. Is it possible to add audio to video in python without ffmpeg? P.S. Sorry for my poor English
• 04:13
  How to get duration a video - laravel - S.M_Emamian Newest 'ffmpeg' Questions - Stack Overflow
  I want to get the duration of my videos when I upload them. To do this, I upload my videos like this: $video = Carbon::now()->timestamp . '_' . $request->file('video')->getClientOriginalName(); $request->file('video')->move( $this->getCorrectPathOnServerAndLocal('/assets/videos/videos'), $video ); My movie is uploaded well. now I want to get the duration of this video. I'm using PHP-FFMpeg: composer require php-ffmpeg/php-ffmpeg $ffprobe = (...)
• 03:14
  FFmpeg conversion failed with "Subtitle encoding failed" and "canvas_size is too small" [closed] - Hillol Talukdar Newest 'ffmpeg' Questions - Stack Overflow
  I'm converting video files using FFmpeg, but the process fails and shows some errors that I don't fully understand the cause of. How can I avoid the error and fix the issue? Below is the command I used and the output I received. FFmpeg Command: ffmpeg -y -hide_banner -i saf:12.VOB -map 0:3 -c:s:0 dvdsub -map 0:2 -map 0:1 -f mp4 -vcodec copy -map_metadata 0:g -acodec aac -async 1 saf:13.mp4 ErrorMessage: Input #0, mpeg, from 'saf:12.VOB': Duration: 00:00:21.99, start: 0.280633, bitrate: 7147 kb/s Stream #0:0[0x1bf]: Data: (...)

20 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 06:50
  ffmpeg_kit_flutter_full_gpl，aken down from the official platform，ffmpeg-kit-full-gpl-6.0-ios-xcframework.zip [closed] - marsdiscovery Newest 'ffmpeg' Questions - Stack Overflow
  Important plugins for Flutter: ffmpeg_kit_flutter_full_gpl， It has been taken down from the official platform and is no longer under maintenance. Error message during use: -> Installing ffmpeg-kit-ios-full-gpl (6.0) Http download $ /usr/bin/curl -f -L -o /var/folders/b8/thh68v8j4nqfhsjg7x4pv7140000gn/T/d20250420-81226-c8wqz2/file.zip https://github.com/arthenica/ffmpeg-kit/releases/download/v6.0/ffmpeg-kit-full-gpl-6.0-ios-xcframework.zip --create-dirs --netrc-optional --retry 2 -A 'CocoaPods/1.15.2 cocoapods-downloader/2.1' [!] Error installing (...) -- https://github.com/arthenica/ffmpeg-kit/releases/download/v6.0/ffmpeg-kit-full-gpl-6.0-ios-xcframework.zip
• 11:56
  ffmpeg video streaming issue - Personboiii Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to embed an adb video stream into an html site with flask, and the code I have keeps on returning this same error: FFmpeg: [mjpeg ⓐ 0x156631c10] Could not find codec parameters for stream 0 (Video: mjpeg, none(bt470bg/unknown/unknown)): unspecified size FFmpeg: Consider increasing the value for the 'analyzeduration' (1000000) and 'probesize' (5000000) options FFmpeg: Input #0, mjpeg, from 'pipe:0': FFmpeg: Duration: N/A, bitrate: N/A FFmpeg: Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 25 fps, 1200k tbr, 1200k (...)
• 10:18
  FFmpeg conversion failed Issue [closed] - Hillol Talukdar Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert a video file using FFmpeg, but the process fails and shows some errors that I don't fully understand the cause of. How can I avoid the error and fix the issue? Below is the command I used and the output I received. Command: [-y, -hide_banner, -i, saf:12.VOB, -map, 0:3, -c:s:0, dvdsub, -map, 0:2, -map, 0:1, -f, mp4, -vcodec, copy, -map_metadata, 0:g, -acodec, aac, -async, 1, saf:13.mp4] ErrorMessage: Input #0, mpeg, from 'saf:12.VOB': Duration: 00:00:21.99, start: 0.280633, bitrate: 7147 kb/s Stream #0:0[0x1bf]: Data: (...)

19 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:52
  hevc_videotoolbox encoding failed - TheCoderPro Newest 'ffmpeg' Questions - Stack Overflow
  I have some downloaded My Hero Academia episodes, and I'm trying to put them on my iPad that hasn't got that much space. So, I decided to try convert them to HEVC. But, when I try to use hevc_videotoolbox for GPU acceleration. But, it doesn't work. input command: ffmpeg -i /Volumes/SSD\\ STORAGE/MHA/S2/S02E00.mp4 -b:v 640k /Volumes/SSD\\ STORAGE/MHA/S2/S02E00_0640.mp4 Output: ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers built with Apple clang version 13.0.0 (clang-1300.0.29.3) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4.1 (...)
• 11:31
  How to convert an ffmpeg texture to Open GL texture without copying to CPU memory - PPP Newest 'ffmpeg' Questions - Stack Overflow
  This ffmpeg example demonstrates how to do hardware decoding: https://github.com/FFmpeg/FFmpeg/blob/release/4.2/doc/examples/hw_decode.c At line 109 it does this: /* retrieve data from GPU to CPU */ if ((ret = av_hwframe_transfer_data(sw_frame, frame, 0)) < 0) I want to avoid this because it takes time. Therefore, I need a way to reuse that decoded video, which is in GPU memory, to redo color conversion. How to transform the decoded texture in GPU memory to texture in Open GL without getting it back to CPU memory like in the code (...) -- https://github.com/FFmpeg/FFmpeg/blob/release/4.2/doc/examples/hw_decode.c
• 03:08
  OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error - user2262504 Newest 'ffmpeg' Questions - Stack Overflow
  I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out. It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec 'libx264'" error. Anyone has ideas to solve this problem? More specifically: anyone knows where and how OpenCV invoke ffmpeg API? how to change ffmpeg default settings using code, hopefull, can be (...)

18 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:56
  FFMPEG: Dumping YUV data into AVFrame structure - Zax Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to dump a YUV420 data into the AVFrame structure of FFMPEG. From the below link: http://ffmpeg.org/doxygen/trunk/structAVFrame.html, i can derive that i need to put my data into data[AV_NUM_DATA_POINTERS] using linesize [AV_NUM_DATA_POINTERS]. The YUV data i'm trying to dump is YUV420 and the picture size is 416x240. So how do i dump/map this yuv data to AVFrame structures variable? Iknow that linesize represents the stride i.e. i suppose the width of my picture, I have tried with some combinations but do (...) -- http://ffmpeg.org/doxygen/trunk/structAVFrame.html

17 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:09
  How to Add PulseAudio Server to quay.io/browser/google-chrome-stable Docker Image for Audio Support with Screen Recording? - Ahmed Seddik Bouchiba Newest 'ffmpeg' Questions - Stack Overflow
  I’m trying to set up an environment for recording the screen of a Chrome browser running in a Docker container, and I need to enable audio support. I’m using the quay.io/browser/google-chrome-stable:133.0.6943.98-6 image for the browser and quay.io/aerokube/xvfb:21.1 for the virtual framebuffer to capture the screen. However, I’m facing an issue where audio is not supported in the Chrome Docker image, which I need for recording. The setup involves using FFmpeg in a separate container to stream the recorded video, but without audio from the browser, this setup isn’t complete. I’m (...)

16 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:40
  flutter integration with ffmpeg package for video stream recording using rtsp url - Brijesh Gangwar Newest 'ffmpeg' Questions - Stack Overflow
  Launching lib\\main.dart on SM X115 in debug mode... C:\\Users\\hp\\AppData\\Local\\Pub\\Cache\\hosted\\pub.dev\\ffmpeg_kit_flutter_full_gpl-6.0.3\\android\\src\\main\\java\\com\\arthenica\\ffmpegkit\\flutter\\FFmpegKitFlutterPlugin.java:157: error: cannot find symbol public static void registerWith(final io.flutter.plugin.common.PluginRegistry.Registrar registrar) ^ symbol: class Registrar location: interface PluginRegistry C:\\Users\\hp\\AppData\\Local\\Pub\\Cache\\hosted\\pub.dev\\ffmpeg_kit_flutter_full_gpl-6.0.3\\android\\src\\main\\java\\com\\arthenica\\ffmpegkit\\flutter\\FFmpegKitFlutterPlugin
• 13:32
  FFMPEG with D3D11 hw acceleration: How to copy DirectX texture to OpenGL? - imikbox Newest 'ffmpeg' Questions - Stack Overflow
  I'm decoding a video using FFMPEG with the D3D11 video acceleration. I want to display the decoded frames in my GUI, for which I use OpenGL for rendering. I want to avoid copying the decoded frame back to system memory. So my goal is to copy/map the ID3D11Texture2D which I get from FFMPEG directly to an OpenGL texture. There exists an OpenGL extension for this purpose (WGL_NV_DX_interop and WGL_NV_DX_interop2). However, I don't get it running. Here is my code so far (stripped down): // create texture, to be used later in DirectX GLuint (...)
• 08:08
  ffmpeg gets the wrong color_range [closed] - Rems Newest 'ffmpeg' Questions - Stack Overflow
  I have videos with incorrect color_range information. Their mediainfo is like this: Color range : Limited color_range_Original : Full The video is indeed limited, and one of our editing tools, for unknown reasons, adds this color_range_Original tag. The problem is that when ffmpeg processes these videos, it sees the color range as Full. It retrieves the wrong information, which can lead to problems and color loss later on. I know it's possible to specify to ffmpeg the input range with the scale filter, but in this workflow I don't re-encode the videos, (...)

15 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:11
  using FFMPEG with silencedetect to remove audio silence [closed] - Zahlii Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use the following command with the latest ffmpeg build to remove silence from my .mp3 files: ffmpeg -i SILENCE.mp3 -af silencedetect=n=-50dB:d=1 -y -ab 192k SILENCE_OUT.mp3 However, the following output is produced: ffmpeg version N-66154-g1654ca7 Copyright (c) 2000-2014 the FFmpeg developers built on Sep 5 2014 22:10:38 with gcc 4.8.3 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass (...)
• 14:00
  ffmpeg extensionless ts file [closed] - Erv00 Newest 'ffmpeg' Questions - Stack Overflow
  I want to download a video file that is streamed with HLS. Unfortunately, the .m3u8 file references the segments that have no extension, and thus the HLS demuxer throws the following error: detected format mpegts extension none mismatches allowed extensions in url The url is like https://example.com/segment3 I have tried to allow all extensions with -allowed_extensions ALL,none, but this does not work. My question is, how can I make this work, without having to download all segments by (...)
• 01:31
  FFMEG option scale=-1 and scale=-2 - smal Newest 'ffmpeg' Questions - Stack Overflow
  I tried to convert a video and resize it with scale=-1:720, but got the error "width not divisible by 2". And I solved it with: scale=-2:720. What are the differences between scale=-1:720 and scale=-2:720

13 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:44
  ffmpeg using zoompan and depan over a static image and a specific background [closed] - marcorocco Newest 'ffmpeg' Questions - Stack Overflow
  I would like use ffmpeg zoompan on a photo with this conditional duration should be about 8 seconds image should be scaled to avoid jiggly artifacts should be freezze for some seconds, and depan I already have my background: reference image is portrait I would like use a sort of "pad" during transition video out should be 1920x1080 16:9 zoompan on the center How I can do? (...)
• 23:18
  Is there a way to batch split a file by chapter with ffmpeg and then reassemble with mkvmerge in windows? - Sipherdrakon Newest 'ffmpeg' Questions - Stack Overflow
  So I made a batch script originally with the ability to relatively precision trim a video into chapters without having to run by keyframes, but the code looks horrible and I can't get it to loop through all mp4 files nor get mkvmerge to append the files after splitting them. Code is below but be gentle it is my first try. ⓐecho off setlocal enableDelayedExpansion REM CODE BELOW CREATES JSON FILES FOR ALL MP4 FILES WITHIN THE SAME DIRECTORY ffprobe -v quiet -print_format json -show_chapters -loglevel error "01x01.mp4" > "01x01.json" REM CODE BELOW SETS (...)
• 12:50
  Passing two named pipes as input to ffmpeg using python - Kikto Newest 'ffmpeg' Questions - Stack Overflow
  I have two av streams, one video and one audio, i'm trying to pipe both as inputs to ffmpeg os.mkfifo(VIDEO_PIPE_NAME) os.mkfifo(AUDIO_PIPE_NAME) ffmpeg_process = subprocess.Popen([ "ffmpeg", "-i", VIDEO_PIPE_NAME, "-i", AUDIO_PIPE_NAME, "-listen", "1", "-c:v", "copy", "-c:a", "copy", "-f", "mp4", "-movflags", "frag_keyframe+empty_moov", "http://0.0.0.0:8081"], stdin=subprocess.PIPE) pipe_video = open(VIDEO_PIPE_NAME,'wb') pipe_audio = open(AUDIO_PIPE_NAME,'wb') #Code stuck here The code stuck on pipe_audio = (...)
• 06:02
  FFmpeg pan filter error when routing stereo audio to rear channels of 5.1 output - MilkyTech Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to mix a stereo commentary track into the rear surround channels of a 5.1 audio stream using FFmpeg on Windows 10. My goal is to lower the volume of the original 5.1 movie audio, then add the stereo commentary so it plays from the rear left and right speakers (SL and SR). I've already converted the commentary to EAC3 to match the main track's codec: ffmpeg -i "CastCommentary.m4a" -c:a eac3 -b:a 640k CastCommentary.eac3 Then I tried mixing them like this (from within Command Prompt, not PowerShell or a batch file): ffmpeg -i (...)

12 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:11
  Convert webm to mp4 using FFMPEG via RecordRTC - niightiik Newest 'ffmpeg' Questions - Stack Overflow
  I have an angular application where I am using RecordRTC to record audio + video, the video is getting stored in webm format but I want to convert it into mp4, for that I am using FFMPEG library. I am getting an issue where I have installed ⓐffmpeg/ffmpeg [^0.12.7] ⓐffmpeg/core [0.12.4] Now I am trying to call it in my .ts file import createFFmpeg, fetchFile from 'ⓐffmpeg/ffmpeg'; But getting an issue TS2305: Module '"../../../../../node_modules/ⓐffmpeg/ffmpeg/dist/esm"' has no exported member 'createFFmpeg'. TS2305: Module (...)

11 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:08
  Speed Compare audio file library [closed] - DrGMark7 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to benchmark some popular python audio libs for audio work in python. I intend to test how the Read/Write of these libs are. I tested with wav files with length 1, 2, 5, 10, 30, 60, 300, 600, 1800 with the following libs: PyTorch Audio, librosa, soundfile, pydub. The speed is shown in the graph below. Can anyone explain me why it is so fast and why pydub is the fastest? I am also wondering how big software like Meta or Youtube handle such small audio files in large quantities. I'm trying to understand it if we take away from Python, it's a slow language.  (...) -- ,
• 22:07
  FFMPEG vsync drop and regeneration [closed] - Lhh92 Newest 'ffmpeg' Questions - Stack Overflow
  According to the ffmpeg documentation vsync parameter Video sync method. For compatibility reasons old values can be specified as numbers. Newly added values will have to be specified as strings always. drop As passthrough but destroys all timestamps, making the muxer generate fresh timestamps based on frame-rate. It appears that the mpegts mux does not regenerate the timestamps correctly (PTS/DTS); however, piping the output after vsync drop to a second process as raw h264 does force mpegts to regenerate the PTS. Generate test (...)
• 11:44
  AWS Lambda function execution for video - Abinaya Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to run my application as Lambda, I am not getting successful eexecution everytime. Its like inconsistent results over testing. The application uses files from S3 bucket as input, once I have tried to execute Lambda with input being a simple 2 sec long mp4 video using FFMPEG in my application for processing. Lambda executed for 4 or 5 times (not everytime). I was able to see the FFMPEG commands and logs on AWS Log output screen. he cloudwatch logs on the last execution of this: ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg (...)

10 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:27
  Using -itsoffset with AAC Tracks in MP4: What Actually Happens? [closed] - user27607034 Newest 'ffmpeg' Questions - Stack Overflow
  If the frame duration of an AAC file is around 21 milliseconds, does the itsoffset value in the following command actually get applied? And even if it does, will players like QuickTime or a smart TV actually respect it? ffmpeg -itsoffset 0.009 -i input.mp4 \\ -i input.mp4 \\ -map 1:v:0 \\ // hevc -map 0:a:0 \\ // aac -c copy \\ output.mp4
• 15:11
  4K Screen Recording on 1080p Monitors [closed] - Souhail Benlhachemi Newest 'ffmpeg' Questions - Stack Overflow
  I have created a basic windows screen recording app (ffmpeg + GUI), but I noticed that the quality of the recording depends on the monitor used to record, the video recording quality when recorded using a full HD is different from he video recording quality when recorded using a 4k monitor (which is obvious). There is not much difference between the two when playing the recorded video with a scale of 100%, but when I zoom to 150% or more, we clearly can see the difference between the two recorded videos (1920x1080 VS the 4k). I did some research on how to do screen (...) -- Graphics pipeline, Stream Output Stage

9 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:23
  How to dump ALL metadata from a media file, including cover image title? [closed] - Unideal Newest 'ffmpeg' Questions - Stack Overflow
  I have an MP3 song: # ffprobe -hide_banner -i filename.mp3 Input #0, mp3, from 'filename.mp3': Metadata: composer : Music Author title : Song Name artist : Singer encoder : Lavf61.7.100 genre : Rock date : 2025 Duration: 00:03:14.04, start: 0.023021, bitrate: 208 kb/s Stream #0:0: Audio: mp3 (mp3float), 48000 Hz, stereo, fltp, 192 kb/s Metadata: encoder : Lavc61.19 Stream #0:1: Video: png, rgb24(pc, gbr/unknown/unknown), 600x600 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn (attached pic) Metadata: title : (...)
• 21:38
  pydub.exceptions.CouldntDecodeError: Decoding failed. ffmpeg returned error code: 1 - azail765 Newest 'ffmpeg' Questions - Stack Overflow
  This script will work on a 30 second wav file but not a 10 minutes phone call also in wav format. Any help would be appreciated I've downloaded ffmpeg. # Import necessary libraries from pydub import AudioSegment import speech_recognition as sr import os import pydub chunk_count = 0 directory = os.fsencode(r'C:\\Users\\zach.blair\\Downloads\\speechRecognition\\New folder') # Text file to write the recognized audio fh = open("recognized.txt", "w+") for file in os.listdir(directory): filename = (...)

7 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:04
  Look for fastest video encoder with least lag to stream webcam streaming to ipad [closed] - kelly Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking for the fastest way to encode a webcam stream that will be viewable in a html5 video tag. I'm using a Pandaboard: http://www.digikey.com/product-highlights/us/en/texas-instruments-pandaboard/686#tabs-2 for the hardware. Can use gstreamer, cvlc, ffmpeg. I'll be using it to drive a robot, so need the least amount of lag in the video stream. Quality doesn't have to be great and it doesn't need audio. Also, this is only for one client so bandwidth isn't an issue. The best solution so far is using ffmpeg with a mpjpeg gives me around 1 sec delay. (...) -- http://www.digikey.com/product-highlights/us/en/texas-instruments-pandaboard/686#tabs-2
• 11:42
  ffmpeg: error while loading shared libraries: libnppig.so.12: cannot open shared object file on CentOS [closed] - Rahib Rasheed Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to install ffmpeg on a CentOS server, but I'm running into a shared library error when I try to run it: ffmpeg: error while loading shared libraries: libnppig.so.12: cannot open shared object file: No such file or directory Running ldd shows some missing dependencies: ldd $(which ffmpeg) | grep libnpp libnppig.so.12 => not found libnppicc.so.12 => /lib64/libnppicc.so.12 libnppidei.so.12 => /lib64/libnppidei.so.12 libnppif.so.12 => not found libnppc.so.12 => /lib64/libnppc.so.12 I’ve tried searching for the missing (...)
• 15:43
  some codecs (ie. libx264) cannot be reused after draining - Neddie Newest 'ffmpeg' Questions - Stack Overflow
  After draining an encoder (by sending it a null frame and then receiving packets until EOF) it enters draining mode after which avcodec_send_frame will fail, returning EOF. You're supposed to call avcodec_flush_buffers which among other things sets the internal draining flag to 0, allowing avcodec_send_frame to work again. Unfortunately it checks AV_CODEC_CAP_ENCODER_FLUSH first and if not set it returns without resetting the draining flag. So the only way to reuse the codec is to close and reopen it, which is wasteful, plus avcodec_close is deprecated. Am I missing (...)
• 14:00
  How to automatically rotate video based on camera orientation while recording? - jestrabikr Newest 'ffmpeg' Questions - Stack Overflow
  I am developing Mediasoup SFU and client web app, on the server I am recording client's stream by sending it to FFmpeg as plain RTP. FFmpeg creates HLS recording (.m3u8 and .ts files), because I need to be able to switch between WebRTC live stream and HLS recording before live stream ends. My problem is that, when I am testing the app and I rotate my phone 90 degrees, the recording's aspect ratio stays the same but the image is rotated (as shown on images 1.1, 1.2 and 1.3 below). I need for it to change aspect ratio dynamically according to camera orientation. How can I do (...) -- , , , ,
• 08:58
  How to use the ffmpeg command to write the data of a .ts file into a named pipe on windows [duplicate] - qyt Newest 'ffmpeg' Questions - Stack Overflow
  I first tested creating a named pipe using C++. The code is as follows. "\\\\\\\\.\\\\pipe\\\\mpegts", PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT, PIPE_UNLIMITED_INSTANCES, 1024 * 1024 * 10, 1024 * 1024 * 10, 0, NULL); if (hPipe == INVALID_HANDLE_VALUE) Sleep(1000000); Then I tried to write data using the command: ./ffmpeg -re -stream_loop -1 -i .\\1.ts -c copy -f mpegts \\\\.\\pipe\\mpegts However, I encountered an error: File '\\\\.\\pipe\\mpegts' already exists. Overwrite? (...)

6 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:45
  Microphone and Camera Issues After Installing FFmpeg [migrated] - Fang Newest 'ffmpeg' Questions - Stack Overflow
  After installing FFmpeg using Winget on my Windows laptop, my microphone started capturing a lot of noise it doesnt work and my camera began flickering. The only fix that worked was performing a full system reset via USB boot. Normal reset or uninstalling drivers wont work. Issue occured on win10/win11 after installing ffmeg Note: I've installed ffmpeg on my other laptop everything works fine.
• 15:14
  Get the maximum frequency of an audio spectrum - milahu Newest 'ffmpeg' Questions - Stack Overflow
  I want to detect the cutoff frequency of the AAC audio encoder used to compress an M4A audio file. This cutoff frequency (or maximum frequency) is an indicator of audio quality. High-quality audio has a cutoff around 20KHz (fullband), medium-quality audio has a cutoff around 14KHz (superwideband), low-quality audio has a cutoff around 7KHz (wideband), super-low-quality audio has a cutoff around 3KHz (narrowband). See also: voice frequency Example spectrum of a 2 hours movie, generated with sox, with a maximum frequency around 19.6KHz: The program (...) -- voice frequency, , Python script
• 13:06
  Command-line streaming webcam with audio from Ubuntu server in WebM format - mjtb Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream video and audio from my webcam connected to my headless Ubuntu server (running Maverick 10.10). I want to be able to stream in WebM format (VP8 video + OGG). Bandwidth is limited, and so the stream must be below 1Mbps. I have tried using FFmpeg. I am able to record WebM video from the webcam with the following: ffmpeg -s 640x360 \\ -f video4linux2 -i /dev/video0 -isync -vcodec libvpx -vb 768000 -r 10 -vsync 1 \\ -f alsa -ac 1 -i hw:1,0 -acodec libvorbis -ab 32000 -ar 11025 \\ -f webm /var/www/telemed/test.webm However (...)
• 09:01
  ffmpeg: error while loading shared libraries: libopenh264.so.5 [closed] - ESZ Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg and getting this error ffmpeg: error while loading shared libraries: libopenh264.so.5: cannot open shared object file: No such file or directory I have already checked if the library exists and it does. I added it to /etc/ld.so.conf as mentioned in this previous question but it doesn't work.
• 11:32
  Generate thumbnail for text file - Sophivorus Newest 'ffmpeg' Questions - Stack Overflow
  Suppose a user uploads a .txt or .php file, and I want to generate a .png thumbnail for it. Is there a simple way of doing it, that doesn't require me to open the file and write its contents into a new .png? I have ImageMagick and FFmpeg available, there must be a way to take advantage of that, but I've been looking a lot and no luck yet. Thanks in advance.

5 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 04:57
  FFmpeg Arthenica always encodes with x265 Main10 profile [closed] - Jabed Dhali Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFmpeg-Kit (Arthenica) for iOS to compress videos using the libx265 encoder. I'm building FFmpeg with a custom configuration script: export CUSTOM_CONFIG="--disable-indevs \\ --disable-outdevs \\ --disable-hwaccels \\ --enable-videotoolbox \\ --disable-protocols \\ --enable-protocol=file,fd,saf,async \\ --disable-decoders \\ --enable-decoder=$ENABLE_DECODER_LIST \\ --disable-encoders \\ --enable-encoder=$ENABLE_ENCODER_LIST" export CUSTOM_CONFIG_IOS=$CUSTOM_CONFIG ./ios.sh --enable-ios-videotoolbox --enable-lame (...) -- Arthenica
• 11:37
  I am building an editor app in flutter, I want to use ffmpeg_kit_flutter_full_gpl package or something similar to build video editor [closed] - Almas Tai Newest 'ffmpeg' Questions - Stack Overflow
  Users/xyz/.pub-cache/hosted/pub.dev/ffmpeg_kit_flutter_full_gpl-6.0.3/android/src/main/java/com/arthenica/ffmpegkit/flutter/FFmpegKitFlutterPlugin.java:192: error: method onAttachedToEngine(FlutterPluginBinding) is already defined in class FFmpegKitFlutterPlugin public void onAttachedToEngine(ⓐNonNull final FlutterPluginBinding flutterPluginBinding) ^ /Users/xyz/.pub-cache/hosted/pub.dev/ffmpeg_kit_flutter_full_gpl-6.0.3/android/src/main/java/com/arthenica/ffmpegkit/flutter/FFmpegKitFlutterPlugin.java:657: error: cannot find symbol protected void init(final (...)
• 13:07
  Re-encode a video keeping the GOP structure of the original video [closed] - Baltar27 Newest 'ffmpeg' Questions - Stack Overflow
  Is there a way to re-encode a video with ffmpeg keeping the GOP structure of the original file? That is, if a frame is IDR, I, B or P in the input file, keep the same type in the output file, even if the GOP is variable and/or adaptive (it changes dynamically GOP type Open/Closed, the I period N or the P period M). Encoding in this way allows to maintain the maximum quality as the Open/Closed, I/B/P and GOP length decisions has been taken already by the original (...)
• 07:47
  How to stream from dynamically created Selenium Moon browser pods to RTMP using ffmpeg? - Ahmed Seddik Bouchiba Newest 'ffmpeg' Questions - Stack Overflow
  I'm running Selenium Moon (from Aerokube) in my minikube cluster for automated browser testing, and I need to stream the browser sessions to an RTMP endpoint. Here's my current setup: $ kubectl get all -n my-namespace NAME READY STATUS RESTARTS AGE pod/minio-5b85cc6cd6-nznwl 1/1 Running 1 (48m ago) 2d8h pod/moon-7db8b9c76f-8jzzm 4/4 Running 0 34m pod/moon-7db8b9c76f-kp78j 4/4 Running 0 34m NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/minio NodePort 10.99.231.25 9000:31147/TCP,9001:31125/TCP 2d8h service/moon NodePort 10.100.244.255 (...)
• 05:00
  very low latency streaminig with ffmpeg using a webcam - userDtrm Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to configure ffmpeg to do a real-time video streaming using a webcam. The ffmpeg encoder command I use is as follows. ffmpeg -f v4l2 -input_format yuyv422 -s 640x480 -i /dev/video0 -c:v libx264 -profile:v baseline -trellis 0 -subq 1 -level 32 -preset superfast -tune zerolatency -me_method epzs -crf 30 -threads 0 -bufsize 1 -refs 4 -coder 0 -b_strategy 0 -bf 0 -sc_threshold 0 -x264-params vbv-maxrate=2000:slice-max-size=1500:keyint=30:min-keyint=10: -pix_fmt yuv420p -an -f mpegts udp://192.168.1.8:5001 The ffplay command used to display the video (...)

4 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:52
  ffmpeg unable to convert vhs-captured .ts files [closed] - fredko Newest 'ffmpeg' Questions - Stack Overflow
  I'm digitizing vhs tapes with a Hauppauge Colossus capture card and Mediaportal on windows 7. They're captured as .ts files and the .ts files play well, with no sign of corruption. But I'd like to convert them to .mkv (losslessly from the .ts), and ffmpeg (version 2023-08-28-git-b5273c619d-essentials_build-www.gyan.dev) fails at this. I use ffmpeg.exe -i test.ts -c copy test.mkv and get these errors repeated many times [mpegts ⓐ 00000000003d6d40] Packet corrupt (stream = 0, dts = 46105). [mpegts ⓐ 00000000003d6d40] Packet corrupt (stream = 0, dts (...)
• 16:02
  FFMPEG demuxer seek error in Chrome range slider with AWS S3 audio file - Tania Rascia Newest 'ffmpeg' Questions - Stack Overflow
  I'm encountering an issue where if you click or slide enough on a range slider in Chrome, it will eventually stop working and give this error, an error 2 (network error): PIPELINE_ERROR_READ: FFmpegDemuxer: demuxer seek failed If I google this error, I only find the Chrome source code: Line 1749 of Chrome source code First, this issue only happens in Chrome, not Firefox. Second, I can only get it to happen with an encrypted file from AWS, which I can't get into a sandbox, so the sandbox I made will never encounter that error with the random audio file I (...) -- Line 1749 of Chrome source code, Here's the sandbox.
• 13:59
  ffmpeg decoding mixing frames - Paulo Morgado Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFmpeg.AutoGen in a .NET 8.0 application for decoding H264 and JPEG. Every usage uses its own instance (there are no shared objects) and there isn't simultanous use of each object. However, they can be used from different threads. But I'm getting the encoded results with mixed data from all sources. It happens mostly for the same origin codeec, but not esclusivelly. I have a base class that looks like this: public abstract unsafe class Decoder : IDisposable protected readonly object sync = new(); protected AVCodecContext* (...) -- FFmpeg.AutoGen
• 11:08
  OpenCV FFMPEG RTSP Camera Feed Errors - trn2020 Newest 'ffmpeg' Questions - Stack Overflow
  I'm getting these errors at random times when saving frames from an rtsp camera feed. The errors happen at different times, usually after 100-200 images have been saved, and the errors themselves are not always exactly the same. They cause the images that are saved at the time of the error to be distorted either to the point of being completely grey or contain distorted pixels. #Frame_142 - [hevc ⓐ 0c3bf800] The cu_qp_delta 29 is outside the valid range [-26, 25]. #Frame_406 - [hevc ⓐ 0b6bdb80] Could not find ref with POC 41 I've tried implementing the code in (...)
• 08:59
  FFmpeg WASM Custom build : defining custom flags - Ettur Newest 'ffmpeg' Questions - Stack Overflow
  I wish to create custom ffmpeg.wasm build Now the official GUIDE show four commands "make dev" "make prd" etc So I cloned THE REPO and ran "make prd". It did build, but obviously, this build was with default settings, whatever exactly they made be. So pardon my stupidity, as I cannot figure out how / where / what do I edit to set the custom flags about what I want to be included / excluded in the build? -- GUIDE, THE REPO
• 01:13
  What's FFmpeg doing with avcodec_send_packet()? - Jim Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to optimise a piece of software for playing video, which internally uses the FFmpeg libraries for decoding. We've found that on some large (4K, 60fps) video, it sometimes takes longer to decode a frame than that frame should be displayed for; sadly, because of the problem domain, simply buffering/skipping frames is not an option. However, it appears that the FFmpeg executable is able to decode the video in question fine, at about 2x speed, so I've been trying to work out what we're doing wrong. I've written a very stripped-back decoder program (...) -- here

3 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:30
  FFprobe Throws JsonSyntaxException with NumberFormatException on Some Video Files [closed] - Daydreamer067 Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFprobe through the Java wrapper to analyze video files: FFprobe ffprobe = new FFprobe("pathTo/ffprobe.exe"); FFmpegProbeResult probeResult = ffprobe.probe(fichierTemp.getPath()); This works fine for most files. However, on some video files, I get the following error: com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: Expected an int but was 109893054318340751 at line 160 column 37 path $.chapters[0].id It seems like FFprobe is returning a chapter ID that is a long but it expected an int. How can I handle this situation (...)
• 18:27
  Using HEVC with Alpha to Compose Moviepy Video - James Grace Newest 'ffmpeg' Questions - Stack Overflow
  I'm using moviepy, PIL and numpy and trying to compile a video with 3 components : A background image that is a PNG with no transparency, an Overlay Video that is a HEVC with Alpha, and a primary clip that is produced with a collection of PNG images with transparency. The video is composed with background + overlay video + main video. The problem I'm having is that the overlay video has a black background, so the background image is covered completely. Moviepy is able to import the HEVC video successfully by it seems as though the Alpha channel is lost on (...)
• 16:56
  FFmpeg av_seek_frame() successful, but decoding always starts from the beginning - Summit Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a video player using FFmpeg in C++, where I need to seek to a specific PTS (timestamp) and start decoding from there. However, even after a successful av_seek_frame(), decoding always starts from frame 0 instead of the target frame. void decodeLoop() while (!stopThread) std::unique_lock lock(mtx); cv.wait(lock, [this] return decoding || stopThread; ); if (stopThread) break; int64_t reqTimestamp = requestedTimestamp.load(); // **Skip redundant seeks** if (reqTimestamp == (...)
• 11:08
  React Native alternatives to ffmpeg-kit-react-native for adding text overlays to videos? - Sanjay Kalal Newest 'ffmpeg' Questions - Stack Overflow
  I’m developing a React Native app where I need to add text overlays to videos. I was using ffmpeg-kit-react-native, but this library is deprecated, I am looking for efficient alternative and add overlay text on video and then share it with overlay text. Are there any React Native libraries or native integrations that can efficiently add text overlays to videos without using ffmpeg?
• 04:28
  ffmpeg loop push rtmp error with when using arg -t - se7enXF Newest 'ffmpeg' Questions - Stack Overflow
  I want to loop push a part of video, such as the start 5 senonds, by cmd: ffmpeg -re -stream_loop -1 -ss 0 -t 5 -i xxx.mp4 -c copy -f flv rtmp://xxx Run the command, after 5 senonds error raise: [flv ⓐ 000001c7b4a0f040] Failed to update header with correct duration.4.7kbits/s speed= 1x [flv ⓐ 000001c7b4a0f040] Failed to update header with correct filesize. It works fine if first using ffmpeg cut the video then pushing with out -t. Is there a way to do this together? Because the input file may be a file or a network (...)

2 avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:08
  m3u8 playback issue with VLC player and ffmpeg [closed] - YUZ Newest 'ffmpeg' Questions - Stack Overflow
  I’m creating a timelapse video from a folder of images using FFmpeg, generating two HLS (m3u8) playlists: one at 1080p and another at 2K resolution. The playlists and .ts segments appear to be generated correctly, but when I play the m3u8 files in media players like VLC or PotPlayer, the video does not play seamlessly. Instead, it plays in a segment-by-segment manner (e.g., it stops after each segment and doesn’t automatically continue to the next one). I expect the entire video to play continuously without interruptions. What could be the issue? I ran these commands on cmd: for %i (...)
• 18:21
  m3u8 playback issue with VLC player [closed] - YUZ Newest 'ffmpeg' Questions - Stack Overflow
  I’m creating a timelapse video from a folder of images using FFmpeg, generating two HLS (m3u8) playlists: one at 1080p and another at 2K resolution. The playlists and .ts segments appear to be generated correctly, but when I play the m3u8 files in media players like VLC or PotPlayer, the video does not play seamlessly. Instead, it plays in a segment-by-segment manner (e.g., it stops after each segment and doesn’t automatically continue to the next one). I expect the entire video to play continuously without interruptions. What could be the issue? I ran these commands on cmd: for %i (...)
• 16:22
  How to Adjust Google TTS SSML to Match Original SRT Timing? - Alexandre Silkin Newest 'ffmpeg' Questions - Stack Overflow
  I have an .srt file where each speech segment is supposed to last a specific duration (e.g., 4 seconds). However, when I generate the speech using Google Text-to-Speech (TTS) with SSML, the resulting audio plays the same segment in a shorter time (e.g., 3 seconds). I want to adjust the speech rate dynamically in SSML so that each segment matches its original timing. My idea is to use ffmpeg to extract the actual duration of each generated speech segment, then calculate the speech rate percentage as: generated duration speech rate = -------------------- original (...)
• 12:45
  Erros while openh264 decoding in ffmpeg - Paul_ghost Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to decode and then re-encode an RTP video-stream. I need to use OpenH264 codec by Cisco. I used this codec with the FFmpeg tool: ffmpeg -hide_banner \\ -protocol_whitelist file,rtp,udp \\ -err_detect ignore_err \\ -c:v libopenh264 \\ -i /src/stream.sdp \\ -c:v libopenh264 \\ -profile:v high \\ $OUTPUT_FILE & The stream has a little packet-loss (around 2-3 % in the middle of the stream), and when packet loss occur, the codec print a lot of errors in the logs: [sdp ⓐ 0x5bfcad506740] max delay reached. need to consume packet (...)
• 10:53
  how can I set a specific duration for my speech using Google Text to Speech - Alexandre Silkin Newest 'ffmpeg' Questions - Stack Overflow
  I went through the documentation of Google Text to Speech SSML. https://developers.google.com/assistant/actions/reference/ssml#prosody So there is a tag called which as per the documentation of W3 Specification can accept an attribute called duration which is a value in seconds or milliseconds for the desired time to take to read the contained text. So Hello, How are you? should take 3 seconds for google text to speech to speak this! But when i try it here https://cloud.google.com/text-to-speech/ , its not working and also I tried it in rest API. How can I get the time of (...) -- https://developers.google.com/assistant/actions/reference/ssml#prosody, https://cloud.google.com/text-to-speech/
• 10:37
  I'm getting error while building the project in vue for ffmpeg.wasm - EaBengaluru Newest 'ffmpeg' Questions - Stack Overflow
  Hi i'm getting below error when i build the project with $npm run build command I'm using vuetify "vuetify": "^2.4.0" still because 3.0 is still in beta so i'm using "vue": "^2.6.11", Here is my package.json .... "dependencies": "ⓐffmpeg/core": "^0.11.5", "ⓐffmpeg/ffmpeg": "^0.11.0", "core-js": "^3.6.5", "vue": "^2.6.11", "vue-router": "^3.5.3", "vuetify": "^2.4.0" , "devDependencies": "ⓐvue/cli-plugin-babel": "~4.5.0", "ⓐvue/cli-plugin-eslint": "~4.5.0", "ⓐvue/cli-service": (...) -- , https://easyupload.io/rl9xyd
• 08:00
  Merge multiple hls playlists - Boris Newest 'ffmpeg' Questions - Stack Overflow
  I want to speed up the process of HLS segmentation of .mp4 video. Now, processing a half-hour video can take about 5 minutes, and that is too long. To do this, I decided to split the video into fragments, process each of them in parallel, and then create an .m3u8 file that will contain a list of .ts files from all the resulting playlists in the correct order. I used the next commands: ffmpeg -i original.mp4 -acodec copy -f segment -segment_time 10 -vcodec copy -reset_timestamps 1 -map 0 output_time_%d.mp4 for splitting the original video to .mp4 fragments 10 seconds (...)

1er avril

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:05
  Looking for a non-FFMPEG/non-Lame Python audio converter for Android [closed] - Marcelcolt Newest 'ffmpeg' Questions - Stack Overflow
  So as the title suggests, I'm looking for another way to convert audio. I am currently using PyTubeFix to download audio from YouTube. That works awesome, but it downloads in M4A. I would really like it in MP3. Most converter libraries and packages use FFMPEG. I've tried to download it through Termux and PyDroid3, but that doesn't work. I've tried to compile it for Android with NDK, but I am so lost in what I am supposed to be doing... Same goes for Lame. I've been at it for over a week now, but I can't find any other way to convert.  (...)
• 13:02
  Use FFMPEG and i have one video 30sec i want mulipal trimming - aryan patel Newest 'ffmpeg' Questions - Stack Overflow
  i want this video trim mulipal like 0.2 sec to 0.5, 0.10sec to 0.14sec and 0.23 to 0.29sec this video trimed success after i want this trimed 3 video merge and create one video and save that any one can know me how
• 13:26
  How to restream IPTV playlist with Nginx RTMP, FFmpeg, and Python without recording, but getting HTTP 403 error? [closed] - boyuna1720 Newest 'ffmpeg' Questions - Stack Overflow
  I have an IPTV playlist from a provider that allows only one user to connect and watch. I want to restream this playlist through my own server without recording it and in a lightweight manner. I’m using Nginx RTMP, FFmpeg, and Python TCP for the setup, but I keep getting an HTTP 403 error when trying to access the stream. Here’s a summary of my setup: Nginx RTMP: Used for streaming. FFmpeg: Used to handle the video stream. Python TCP: Trying to handle the connection between my server and the IPTV source. #!/usr/bin/env python3 import sys import (...)
• 03:39
  How to do low-latency streaming on FFMPEG - Wewd Newest 'ffmpeg' Questions - Stack Overflow
  I'm attempting to make video streaming with latency as low as possible at 50ms or lower if possible, assuming that it's streaming over LAN. The latency is like 200-400ms with the config. I'm not sure what's the problem is. ffmpeg -init_hw_device d3d11va \\ -filter_complex "ddagrab=0:output_fmt=auto:framerate=60" \\ -c:v av1_amf -usage ultralowlatency -rc 1 -async_depth 1 -g 60 -fps_mode vfr \\ -fflags nobuffer -flags low_delay -strict experimental \\ -sdp_file stream.sdp -f rtp rtp://225.0.0.1:55555 stream.sdp v=0 o=- 0 0 IN IP4 (...)
• 03:14
  Why does my yuva444p video always lose alpha channel after transcoding to vp9? - Ian Ye Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert a video with alpha channel using FFmpeg, but the transparency information gets lost in the output. Here is the input video (prores, yuva444p) detail with ffprobe: Stream #0:1[0x2](und): Video: prores (4444) (ap4h / 0x68347061), yuva444p12le(bt709), 360x480, 73314 kb/s, 60.13 fps, 60 tbr, 600 tbn (default) Metadata: creation_time : 2019-05-21T21:23:03.000000Z handler_name : Core Media Video vendor_id : appl encoder : Apple ProRes 4444 And my command is below: ffmpeg -i alpha_prores.mov -c:v libvpx-vp9 -pix_fmt (...)
• 00:13
  How can I build a custom version of opencv while enabling CUDA and opengl? - Josh Newest 'ffmpeg' Questions - Stack Overflow
  I have a hard requirement of python3.7 for certain libraries (aeneas & afaligner). I've been using the regular opencv-python and ffmpeg libraries in my program and they've been working find. Recently I wanted to adjust my program to use h264 instead of mpeg4 and ran down a licensing rabbit hole of how opencv-python uses a build of ffmpeg with opengl codecs off to avoid licensing issues. x264 is apparently opengl, and is disabled in the opencv-python library. In order to solve this issue, I built a custom build of opencv using another custom build of ffmpeg both (...)

31 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:18
  FFMPEG demuxer seek error in Chrome range slider with AWS audio file - Tania Rascia Newest 'ffmpeg' Questions - Stack Overflow
  I'm encountering an issue where if you click or slide enough on a range slider in Chrome, it will eventually stop working and give this error, an error 2 (network error): PIPELINE_ERROR_READ: FFmpegDemuxer: demuxer seek failed If I google this error, I only find the Chrome source code: Line 1749 of Chrome source code First, this issue only happens in Chrome, not Firefox. Second, I can only get it to happen with an encrypted file from AWS, which I can't get into a sandbox, so the sandbox I made will never encounter that error with the random audio file I (...) -- Line 1749 of Chrome source code, Here's the sandbox.
• 15:04
  How to fix av_interleaved_write_frame() broken pipe error in php - Adekunle Adeyeye Newest 'ffmpeg' Questions - Stack Overflow
  I have an issue using ffmpeg to stream audio and parse to google cloud speech to text in PHP. It returns this output. I have tried delaying some part of the script, that did not solve it. I have also checked for similar questions. however, they are mostly in python and none of the solutions actually work for this. built with gcc 8 (GCC) cpudetect libavutil 56. 31.100 / 56. 31.100 libavcodec 58. 54.100 / 58. 54.100 libavformat 58. 29.100 / 58. 29.100 libavdevice 58. 8.100 / 58. 8.100 libavfilter 7. 57.100 / 7. 57.100 libavresample 4. 0. (...) --
• 14:15
  RTSP Frame Grabbing creates smeared , pixeled and corrupted images - Robob Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to capture a single frame per second from a RTSP stream with following command ffmpeg -i rtsp://XXX -q:v 1 -vf fps=fps=1 -strftime 1 ZZZZ\\%H_%M_%S.jpg But some of the frames are smeared ,pixeled and corrupted - this effect is drastically increases if rtsp resolution is increased (if the resolution is decreased for example to 720P most of the frames are OK) I have to say that playing same rtsp stream in VLC or FFPLAY is flowless. How I can fix it to grab better quality Thanks in (...) -- ,
• 12:41
  I have a problem with my input resampling FFmpeg audio code [closed] - Jaime Samper Newest 'ffmpeg' Questions - Stack Overflow
  I,ve tried to do a resampling with ffmpeg, but i found issues all the time in my code. firt, i tried to get the imput channel layout but av_channel_layout_default(&layout, audio_codecpar->nb_channels) tells me, "there´s not nb_channels menber. so i put the resampling code manually cause I know is stereo. av_opt_set_sample_fmt(swr_ctx, "in_sample_fmt", codec_ctx->sample_fmt, 0); av_opt_set_int(swr_ctx, "in_channel_layout", AV_CH_LAYOUT_STEREO, 0); av_opt_set_int(swr_ctx, "in_sample_rate", codec_ctx->sample_rate, 0); av_opt_set_sample_fmt(swr_ctx, (...)
• 10:35
  FFmpeg Non-monotonous DTS in output stream - Tim Autin Newest 'ffmpeg' Questions - Stack Overflow
  I need to record a h265 4K RTSP stream into 1/2h segments. I'm using this command: ffmpeg \\ -i "rtsp://..." \\ -vcodec copy \\ -segment_list /path/to/segments_2025-03-31_09-18-45.153_1.txt \\ -f segment -reset_timestamps 1 -segment_time 1800 -strftime 1 \\ "/path/to/segment_%y%m%d%H%M%S.mp4" It works but: the recorded files show some artifact these warnings are print in the console when starting recording: [segment ⓐ 0x6171d02eeac0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the (...)

30 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:50
  Restream with FFmpeg [closed] - boyuna1720 Newest 'ffmpeg' Questions - Stack Overflow
  I have iptv playlist file with inside VODs and Channel links. I want to restream it from my server becouse provider allows only one user to watch. When i am using Nginx with RTMP and FFmpeG i am getting this error. please tell me if anyone can help to fix this issue. ffmpeg -re -i "http://excel90095.cdn-akm.me:80/23a9a158d8d8/2dd736a985/325973" -c:v copy -c:a aac -f flv "rtmp://localhost/live/test" --
• 21:08
  I Need Help Making Our Driver Station Video Feed Faster [closed] - Joshua Green Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using FFmpeg on a Raspberry Pi 4 Model B using an ArduCam UC-844 Rev. B as the camera. We do not need any audio and I don't care about the quality of the video. All we need is for the stream to be as fast as possible. The video from the camera is being streamed to the driver station via FFmpeg and being picked up on the driver station via FFplay. Right now we are getting a delay that we wish could go away or be significantly shortened. These are the commands we are using. Raspberry Pi: ffmpeg -i /dev/video0 -c:v libx264 -crf 45 -maxrate 1M -bufsize 1.2M (...)
• 18:34
  I Need Help Making Our FIRST Robotics Competition Driver Station Video Feed Faster [closed] - Joshua Green Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using FFmpeg on a Raspberry Pi 4 Model B using an ArduCam UC-844 Rev. B as the camera. We do not need any audio and I don't care about the quality of the video. All we need is for the stream to be as fast as possible. The video from the camera is being streamed to the driver station via FFmpeg and being picked up on the driver station via FFplay. Right now we are getting a delay that we wish could go away or be significantly shortened. These are the commands we are using. Raspberry Pi: ffmpeg -i /dev/video0 -c:v libx264 -crf 45 -maxrate 1M -bufsize 1.2M (...)
• 13:12
  ffmpeg produces video I cannot load on latest Safari on iOS - Michael Heuberger Newest 'ffmpeg' Questions - Stack Overflow
  When I encode two videos (mp4 and webm) with these ffmpeg parameters (based on images), I cannot play the mp4 it produces on latest Safari (inside a tag) inside my iPhone 6s using the latest iOS too: ffmpeg -framerate 15.2 -f image2 -thread_queue_size 64 -i /home/michael-heuberger/abcd/frames/%d.webp -y -an -vcodec libx264 -vf scale=trunc(iw/2)*2:trunc(ih/2)*2 -crf 16 -preset fast -profile:v baseline -pix_fmt yuv420p -movflags +faststart /home/michael-heuberger/abcd/videomail_good.mp4 -vcodec libvpx (...) -- www.videomail.io
• 07:57
  Create a video from JPG without have all pictures at begining with ffmpeg - Chklang Newest 'ffmpeg' Questions - Stack Overflow
  I have a game which can create some screenshots, and I want to transform them to mp4 video. So I've the next command: ffmpeg -framerate 15 -i %06d.png -s hd1080 -vcodec libx264 -r 30 timelapse.mp4 But my game lasts 8h, so, after have auto-compress pictures, I've more than 9To of pictures. So I want to start the ffmpeg process before the end of pictures generation, so I want that ffmpeg wait the next picture to digest it. How can I do (...)

29 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 07:47
  How to get webam frames one by one but also compressed? - Vorac Newest 'ffmpeg' Questions - Stack Overflow
  I need to grab frames from the webcam of a laptop, transmit them one by one and the receiving side stitch them into a video. I picked ffmpeg-python as wrapper of choice and the example from the docs works right away: #!/usr/bin/env python # In this file: reading frames one by one from the webcam. import ffmpeg width = 640 height = 480 reader = ( ffmpeg .input('/dev/video0', s='x'.format(width, height)) .output('pipe:', format='rawvideo', pix_fmt='yuv420p')  (...) -- example, the docs

28 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 05:10
  Incorrect length of video produced with ffmpeg libraries [closed] - ivan.ukr Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a C program that takes series of PNG images and converts them into a video. Video consists of the initial black screen and then each of those images, shown for the same constant amount of time, say 200 ms. I'm using libx264 as codec and mp4 as output format. I'm compiling my program with GCC 12 on Ubuntu 22.04 LTS. I'm using ffmpeg version from Ubuntu repositories. In order to achieve above behavior I've set time base to 1/5 in the both stream and codec. // assume imageDuration = 200 AVRational timeBase; av_reduce(&timeBase.num, (...)
• 13:27
  convert a heif file to png/jpg using ffmpeg - Ajitesh Singh Newest 'ffmpeg' Questions - Stack Overflow
  The use case is very straight forward. Imagemagick is able to do the conversion but I want to do it with ffmpeg. Here is the all commands I have tried and all of them gives moov atom not found error. ffmpeg -i /Users/ajitesh/Downloads/sample1.heif -c:v png -pix_fmt rgb48 /Users/ajitesh/Downloads/sample.png Output [mov,mp4,m4a,3gp,3g2,mj2 ⓐ 0x7f85aa813200] moov atom not found /Users/ajitesh/Downloads/sample1.heif: Invalid data found when processing input it seems like moov atom is actually not present by trying to extract the location of moov atom using the (...)
• 01:16
  Empty audio backends for torchaudio list audio backends, with ffmpeg installed on system libraries [closed] - Alberto Agudo Dominguez Newest 'ffmpeg' Questions - Stack Overflow
  I installed torchaudio 2.5.1 and a system install of ffmpeg on Windows and get: PS C:\\Users\\> ffmpeg -version ffmpeg version 2025-01-05-git-19c95ecbff-essentials_build-www.gyan.dev Copyright (c) 2000-2025 the FFmpeg developers built with gcc 14.2.0 (Rev1, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth (...)
• 09:06
  Including FFmpeg.framework Into My IOS App - Alpi Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to manually integrate ffmpegkit.framework into my Expo Bare Workflow iOS app (built with React Native + native modules via Xcode) because the ffmpegkit will be deprecated and the binaries will be deleted. So far I've downloaded the latest LTS release of FFmpegkit from here. I've created 3 files: FFmpegModule.m , FFmpegModule.swift and SoundBud-Bridging-Header. Added the frameworks to my projectDir/ios manually, which shows in my XCode under projectDir/Frameworks Added all the frameworks into "Frameworks, Libraries and Embedded (...) -- here
• 05:15
  How to add info to a video and share it with others in React Native - Sanjay Kalal Newest 'ffmpeg' Questions - Stack Overflow
  I am looking for a solution in which I can pick a video from the gallery and add info or overlay inside it and then share the video with the added info in react native. I tried using ffmpeg but it is not working properly I need a proper solution in which I can peak the video, add info to it and share it. I tried ffmpeg but it is not working.
• 05:04
  How to write H264 raw stream into mp4 using ffmpeg directly - Yelsin Newest 'ffmpeg' Questions - Stack Overflow
  I want to wrap the H264 Nalus(x264 encoded) into mp4 using ffmpeg(SDK 2.1), but the output mp4 file could not play. I don't know how to set the pts and dts. Here's my code, using the code from Raw H264 frames in mpegts container using libavcodec and muxing.c from www.ffmpeg.org. My H264 stream has no B-Frame, every nalu starts with 00 00 00 01,the stream begins with sps pps then the h264 data. #include "stdafx.h" #include #include #include "Stream2Mp4.h" #include #include #include #include #include #include (...)

27 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:30
  How to initialize video decoder with a already decoded frame? - Ragdoll Car Newest 'ffmpeg' Questions - Stack Overflow
  Let's say I have an FFmpeg video decoder x264 initially initialized with some parameters. I am using C++ in my scenario. In normal conditions we push an encoded I-frame into such decoder and then referencing encoded P-frames. I have a special case where my I-frame is already decoded. So in my case I want to: push already decoded I-frame into my decoder push referencing encoded P-frames into my decoder How can I initialize the decoder state with already decoded I-frame? Currently to bypass these limitations I have to: create a new (...)
• 22:01
  Audio delay after resuming FFmpeg on Windows - Iman Sajadpur Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a screen recording software for Windows using Python. I use FFmpeg for recording and psutil to pause and resume the process. Here is a sample of my code: import psutil import subprocess process = subprocess.Popen([ 'ffmpeg', '-y', '-rtbufsize', '100M', '-f', 'gdigrab', '-thread_queue_size', '1024', '-probesize', '50M', '-r', '24', '-draw_mouse', '1',  (...)
• 17:29
  How can I remove silence from an MP3 programmatically? - Benjamin Oakes Newest 'ffmpeg' Questions - Stack Overflow
  I have MP3 files that sometimes have silence at the end. I would like to remove this silence automatically. From what I can tell, it is "perfect" silence (0 amplitude), not background noise. The length of the content and the silence varies. I found some other questions about cropping to the first 30 seconds or cropping to X and X+N seconds using ffmpeg. I would think I could use a similar approach, as long as I have a way to find when the silence starts. How would I do that programatically? For example, one possible solution would be to have a command that finds (...)
• 12:10
  Rewrite video with ffmpeg with given non-equidistant times for each frame - Aleph0 Newest 'ffmpeg' Questions - Stack Overflow
  In one of my projects it is necessary to synchronize a video with a different datasource. I already have the video as a mts file. I also exactly know which frame will be displayed at which time. This times are not necessarily equidistant. For simplicity assume that my video consists just out of 5 frames: Frame No Time 1 1s 2 3s 3 5s 4 8s 5 12s What kind of ffmpeg command using a list of times give by a simple text file can be used to (...)
• 10:28
  How can I display an image from Uint8List with the format AVFormat.RGBA8888 more quickly in Flutter? - Salawesh Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking to display images as quickly as possible. input data is in the form of Uint8List from dart:typed_data, data is encoded in AVFormat.RGBA8888 from ffmpeg. I'm looking for a solution to improve the performance of my graphics rendering code. And to see if it's possible to do it in a thread (isolate or compute). Here's my current working code. final buffer = await ui.ImmutableBuffer.fromUint8List(data.data); final descriptor = ui.ImageDescriptor.raw( buffer, width: data.width, height: data.height, pixelFormat: (...)
• 09:12
  How to manage hls in Nginx RTMP module - syrkandonut Newest 'ffmpeg' Questions - Stack Overflow
  I would like to manage the hls broadcast on request, like stop/start or some other way in Nginx RMTP module. My rtmp server needs to support many cameras, however, when it does ffmpeg exec for 200-300 rtmp streams, this is very difficult for the processor, so I would like to execute the ffmpeg command in parallel only on request, how could this be done? Rtmp Server rtmp server listen 1935; chunk_size 8192; application live live on; record off; drop_idle_publisher 10s; allow publish all; on_publish (...)
• 03:40
  VLC dead input for RTP stream - CaptainCheese Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on creating an rtp stream that's meant to display live waveform data from Pioneer prolink players. The motivation for sending this video out is to be able to receive it in a flutter frontend. I initially was just sending a base-24 encoding of the raw ARGB packed ints per frame across a Kafka topic to it but processing this data in flutter proved to be untenable and was bogging down the main UI thread. Not sure if this is the most optimal way of going about this but just trying to get anything to work if it means some speedup on the frontend. So the issue the (...)

26 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:12
  Can ffmpeg extract closed caption data [closed] - spinon Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using ffmpeg to convert videos in various formats to flv files. One request has also come up and that is to get closed caption info out o the file as well. Does anyone have any experience with this or know it can even be done. I don't see any options for it but thought I would ask and see.
• 04:29
  Using FFmpeg with URL input causes SIGSEGV in AWS Lambda (Python runtime) - Dave94 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to implement a video converting solution on AWS Lambda following their article named Processing user-generated content using AWS Lambda and FFmpeg. However when I run my command with subprocess.Popen() it returns -11 which translates to SIGSEGV (segmentation fault). I've tried to process the video with the newest (4.3.1) static build from John Van Sickle's site as with the "official" ffmpeg-lambda-layer but it seems like it doesn't matter which one I use, the result is the same. If I download the video to the Lambda's /tmp directory and add (...) -- Processing user-generated content using AWS Lambda and FFmpeg, John Van Sickle, ffmpeg-lambda-layer
• 04:08
  How is better to use ffmpeg with the ASP.NET Core, on Linux? - user8245660 Newest 'ffmpeg' Questions - Stack Overflow
  I've got the project (ASP.NET Core, on Linux) where are the several tasks, which relate to the video converting and extracting frames from the video file. I thought about the two possible options: using ffmpeg console utility using P/Invoke with the libavcodec library and others, which ffmpeg uses The second option is miles harder and may be very impractical, because it reminds me developing the new wrapper/library, instead of using the ready products. I've done googling, but there aren't well-done projects for the (...)

25 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:21
  Remove audio tracks with FFmpeg [closed] - David Hildreth Newest 'ffmpeg' Questions - Stack Overflow
  I have some ProRes MOV files that have good audio on the first two tracks and then tone on the last 14. I'd love to remove the last 14 tracks, but I can't seem to do it. I've been trying variations on ffmpeg -i input_video.mov -map 0 -map -0:a:2 -map -0:a:3 -c copy output_video.mov but when I drag the resulting file into Premiere, the last 14 tracks are still included. How do I ditch those audio tracks?
• 16:09
  Broken Pipe Error On Moviepy When Receiving a SIGINT OR SIGTERM - Pablo Estrada Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to write a video with moviepy on a temp dir. Here's a sample code: video_file_name = '/'.format(tempfile.mkdtemp(), 'somefile.mp4') clip.write_videofile(video_file_name, audio = False, threads =4,logger = None) This works perfectly fine. However In my app context I want to be able to catch SIGTERM or SIGINT signals and wait until this write finishes before actually killing the app. I do it this way: signal.signal(signal.SIGINT, self.exit_gracefully) signal.signal(signal.SIGTERM, self.exit_gracefully) def (...)
• 13:35
  How to grab a single image from RTSP stream using FFMPEG - sealfab Newest 'ffmpeg' Questions - Stack Overflow
  I have seen several other related questions but they all seem to be related to grabbing a still shot every X number of seconds. How can I grab 1 image when the command is run. I was trying ffmpeg -y -i rtsp://admin:adminⓐ192.168.10.113:554/live -f image2 -updatefirst 1 do.jpg
• 09:56
  Issue with Subtitles Not Embedding in Exported Video Using FFmpeg - Yash Chauhan Newest 'ffmpeg' Questions - Stack Overflow
  I've been encountering an issue while attempting to embed subtitles into a video using FFmpeg. Despite following the process outlined below, the exported video does not include the subtitles: export async function embedSubtitles(ffmpeg: FFmpeg, videoFile: File, srtContent: string) await ffmpeg.writeFile('input.mp4', await fetchFile(videoFile)); await ffmpeg.writeFile('./subtitles.srt', srtContent); const ffmpeg_cmd = [ '-i', 'input.mp4', '-vf',  (...)

24 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 04:38
  FFmpeg, low quality merge using overlay filter [closed] - He2A Newest 'ffmpeg' Questions - Stack Overflow
  I am currently building a script, part of its functionality is to generate a cover art. I want to limit the scripts dependency to ffmpeg only so please don't suggest to use any other software to do the same. For this, I am using ffmpeg to generate separate components for the coverart, code is given below: # Draws transparent circle in correct background ffmpeg -y -f lavfi -i "color=c=0x20292FFF:s=4000x4000,format=rgba" -filter_complex "geq=r='32':g='41':b='47':a='255*(1-between(hypot(X-2000,Y-2000),0,1150))'" -frames:v 1 -update 1 (...)
• 23:44
  FFMPEG SRT multiple callers in to one listener? - Ian Newest 'ffmpeg' Questions - Stack Overflow
  I am using this line: exec_push /home/production/bin/ffmpeg -i rtmp://localhost:1935/live/slot4 -codec copy -g 1 -bsf:v h264_mp4toannexb -f mpegts srt://0.0.0.0:50330?mode=listener -loglevel verbose; in nginx to launch FFMPEG and have it transmux RTMP to SRT. That being said, i'm curious if there is a flag or a way to have multiple SRT callers call into this one stream. If not, can you provide and alternative solution?
• 23:17
  encoding a video to AV1 for compression - living being Newest 'ffmpeg' Questions - Stack Overflow
  I wrote a code to encode a 1080p video to AV1 codec to reduce the file size. At the same time, I encoded the same video to x265. As they say, AV1 should reduce the size around 40-50% more than x265. But I didn't achieve it. The original file size: 74 MB the file encoded with AV1: 53 MB The file encoded with x265: 34 MB My AV1 code: ffmpeg -i "input.webm" -vcodec libsvtav1 -preset 4 -crf 38 -acodec libopus -ac 1 -b:a 24K "output.mkv"; My x265 code: ffmpeg -i "input.webm" -vcodec libx265 -preset fast -crf 31 -acodec libopus -ac 1 -b:a 24K (...)
• 21:35
  How to Pause and Resume Screen Recording in FFmpeg on Windows? - Iman Sajadpur Newest 'ffmpeg' Questions - Stack Overflow
  I use FFmpeg on Windows to record my screen. I want to pause and resume the recording properly. I know that pressing Ctrl + S, Pause key on the Keyboard, or suspending FFmpeg via Resource Monitor stops the process, but screen recording conntinues in the background. Here is an example of the command I use for screen recording: ffmpeg -f gdigrab -probesize 100M -i desktop -f dshow -channel_layout stereo -i audio="Microphone (2- High Definition Audio Device)" output.mp4 How can I pause recording completely so that no frames are captured during the pause and resume it (...)
• 20:57
  Assigning of dts values to encoded packets - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I have a dump of H264-encoded data, which I need to put in mp4 container. I verified the validity of the encoded data by using mp4box utility against it. The mp4 file created by mp4box contained a proper 17 seconds long video. It is interesting that if I try ffmpeg to achieve the same, the resulting video is 34 seconds long and rather crappy (probably ffmpeg tries to decode video and then encode it, which results in the loss of video quality?) Anyway, for my project I can't use command line approach and need to come up wit a programmatic way to embed the data in the mp4 (...)
• 20:57
  FFmpeg - What does non monotonically increasing dts mean? - Mukund Manikarnike Newest 'ffmpeg' Questions - Stack Overflow
  Observations - Part - I I saw a suggestion elsewhere to run the following command to see if there's something wrong with my .mp4. ffmpeg -v error -i ~/Desktop/5_minute_sync_output_15mn.mp4 -f null - 2>error.log When I run the above command, I see a whole bunch of the logs on the lines of what's shown below. Application provided invalid, non monotonically increasing dts to muxer in stream 0: 15635 >= 15635 This, from searching and reading up quite a bit, I understand that the decoding timestamp isn't in (...)
• 20:55
  ffmpeg remove Non-Monotonous DTS frames - MiGu3X Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to stream copy a .ts file to another .ts file by removing the Non-Monotonous DTS frames? These frames usually also have a smaller resolution than the video I am trying to copy. I attempted this with VideoReDo but it did not work and I cannot seem to make it work. Also, the MediaInfo for the video after remixed to Matrosks shows this: Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : HighⓐL3.2 Format settings : CABAC / 2 Ref Frames Format settings, CABAC : Yes Format settings, RefFrames : 2 (...)
• 20:52
  How to set pts, dts and duration in ffmpeg library? - hslee Newest 'ffmpeg' Questions - Stack Overflow
  I want to pack some compressed video packets(h.264) to ".mp4" container. One word, Muxing, no decoding and no encoding. And I have no idea how to set pts, dts and duration. I get the packets with "pcap" library. I removed headers before compressed video data show up. e.g. Ethernet, VLAN. I collected data until one frame and decoded it for getting information of data. e.g. width, height. (I am not sure that it is necessary) I initialized output context, stream and codec context. I started to receive packets with "pcap" library again. (now for (...)
• 20:51
  Non-monotonous DTS after 26:30:02.81 recording time - micha Newest 'ffmpeg' Questions - Stack Overflow
  I record an hls stream and after 26:30:02.81 there come the message: [http ⓐ 0x558330f5ba80] Opening 'http://de-origin-live-be-01.3qsdn.com:8081/3279/996191_PwxkbnqRThCDGXVr/l_94_95438333_16449.ts?nimblesessionid=2106' for reading frame=2289669 fps= 24 q=-1.0 size=25056768kB time=26:30:02.81 bitrate=2151.6kbits/s speed= 1x [mpegts ⓐ 0x558330f07280] Invalid timestamps stream=0, pts=10378, dts=8589926250, size=11200 [mpegts ⓐ 0x558330f07280] Invalid timestamps stream=0, pts=2908, dts=8589929940, size=3407 [mp4 ⓐ 0x558330f20bc0] Non-monotonous DTS in (...)
• 20:50
  Bash script to recursive find and convert movies - Jacco Newest 'ffmpeg' Questions - Stack Overflow
  in my large movie collection I would like to search for movies with the primary (first) audio track with DTS coding to be converted to Dolby. My problem would be the first track I think. My current bash script will list any movie containing a DTS track, but does not specify which track. #!/bin/bash # My message to create DTS list find /home/Movies -name '*.mkv' | while read f do if mediainfo "$f" | grep A_DTS; then echo $f fi done After that I would like to run this command ffmpeg -i $f -map 0:v -map 0:a:0 -map 0:a -map 0:s (...)
• 20:49
  Convert DTS to AC3 but only if there is no AC3 track already present in container - Domagoj Newest 'ffmpeg' Questions - Stack Overflow
  I have sound system that does not support DTS only AC3. I'm automating the process using bash that detects when movie was added to folder, downloads subtitles and converts audio track to AC3 using this command (one part of it): ffmpeg -i "episode" -map 0:v -map 0:a:0 -map 0:a -map 0:s -c:v copy -c:a copy -c:s copy -c:a:0 ac3 -b:a:0 640k "directory"/episode_nametemp2.mkv This works without issue and I end up with a .mkv file that contains original DTS audio track and newly created AC3 audio track. The issue is that some files already contain both AC3 and DTS tracks and in (...)
• 20:41
  Why is using ffmpeg to convert MXF files failing? - Marinaio Newest 'ffmpeg' Questions - Stack Overflow
  I have an MXF video I googled syntax to convert to mov and ran it in Mobaxterm on Win10. "/drives/c/Program Files (x86)/ffmpeg/bin/ffmpeg.exe" -i Clip0001.MXF -c:v libx264 -c:a aac -ab 384k -sn -strict -2 output.mov I view it in VideoLan and it looks great. I load it into Magix Movie Studio 15 and audio is fine, but video is green! ffmpeg output.mov....shows me: Stream #0:0(eng): Video: h264 (High 4:2:2) (avc1 / 0x31637661), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], 4530 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (...) --
• 14:44
  Convert audio files to mp3 using ffmpeg [closed] - Hrishikesh -Rishi- Choudhari Newest 'ffmpeg' Questions - Stack Overflow
  I need to convert audio files to mp3 using ffmpeg. When I write the command as ffmpeg -i audio.ogg -acodec mp3 newfile.mp3, I get the error: FFmpeg version 0.5.2, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 1 / 52.20. 1 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 built on Jun 24 2010 14:56:20, gcc: 4.4.1 Input #0, mp3, from 'ZHRE.mp3': Duration: 00:04:12.52, start: 0.000000, bitrate: 208 kb/s Stream #0.0: Audio: mp3, 44100 Hz, (...)
• 12:12
  FFmpeg.js in React/Vite: Worker.js 504 Error and Loading Stalls After load() - METHESWAR S R Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to implement video compression in a React application using ⓐffmpeg/ffmpeg with Vite, but I'm encountering issues with loading the FFmpeg core files. The loading process stalls after calling load(), and I'm getting a 504 error for the worker.js file. When initializing FFmpeg in my React component, the loading process hangs after calling ffmpeg.load(). In the network tab, I see a 504 Gateway Timeout error for worker.js?type=module&worker_file. const loadFFmpeg = async () => try setIsLoading(true); const ffmpegInstance = new (...)
• 07:09
  PHP-FFMPEG How can I display the progress? - Mondi Newest 'ffmpeg' Questions - Stack Overflow
  Formathttps://github.com/PHP-FFMpeg/PHP-FFMpeg?tab=readme-ov-file#formats The callback provided for the event can be any callable. I'm just learning and I don't understand how to make a callback. Is it possible to give an example, please? -- https://github.com/PHP-FFMpeg/PHP-FFMpeg?tab=readme-ov-file#formats

23 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:51
  FFmpeg, how to output AVIF image series instead of animated AVIF? [closed] - EntityinArray Newest 'ffmpeg' Questions - Stack Overflow
  I want to convert a series of huge PNGs into AVIF. ffmpeg -i 'img (%d).png' -c:v libsvtav1 -s 1280x720 .\\lidl\\img%d.avif FFmpeg always outputs an animated AVIF. How to force it to output AVIF image series?
• 17:54
  Requested MovieWriter (ffmpeg) not available even when I installed it - EXODIA Newest 'ffmpeg' Questions - Stack Overflow
  I am running this command. import bar_chart_race as bcr bcr.bar_chart_race(df=covid_df,filename=None,figsize=(3.5,3),title='Covid-19 Cases by State',n_bars=10) Getting the below error Exception: You do not have ffmpeg installed on your machine. Download ffmpeg from here: https://www.ffmpeg.org/download.html. Matplotlib's original error message below: Requested MovieWriter (ffmpeg) not available Have already installed the module D:\\py\\Scripts>pip install ffmpeg-python Requirement already satisfied: (...)
• 09:15
  FFmpeg, output AVIF image series instead of animated AVIF - EntityinArray Newest 'ffmpeg' Questions - Stack Overflow
  I want to convert a series of huge PNGs into AVIF. ffmpeg -i 'img (%d).png' -c:v libsvtav1 -s 1280x720 .\\lidl\\img%d.avif FFmpeg always outputs an animated AVIF. How to force it to output AVIF image series?

22 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:53
  Concat lots of audio files to a video with ffmpeg [closed] - Sulli Newest 'ffmpeg' Questions - Stack Overflow
  I’m using this ffmpeg command to add audio effects at certain times to a video file: ffmpeg -i C:\\path\\to\\video.mp4 -i C:\\path\\to\\audio1.wav -i C:\\path\\to\\audio2.wav -filter_complex "[1]adelay=0|0[a1]; [2]adelay=960|960[a2]; [a1][a2]amix=inputs=2[a]" -map 0:v:0 -map [a] -c:v copy -c:a aac -b:a 192k -loglevel error -y C:\\path\\to\\output.mp4 it works, but when I want to add LOTS of audio effects (like more than 200), I get errors like An unexpected error occurred: [WinError 206] The filename or extension is too long As it seems to be a command length problem, I (...)
• 13:38
  FFMPEG Failed to Connect to UDP Stream in Kubernetes Pod [closed] - Nimrod Newest 'ffmpeg' Questions - Stack Overflow
  I have a pod inside my kubernetes (openshift) cluster. The pod tries to connect to a remote UDP video livestream to read frames to be processed. I find that the first 2-4 attempts that the programs makes to connect to the stream fail (timeout) but after around 4 attempts the stream can be connected. It is even more strange to me because there are multiple stream IPs:ports. So there are times when connecting to a IP/Port fails a couple of times at the beginning but afterwards the program has no issue connecting to a various number of stream sources. My question is does anyone (...)
• 00:14
  Install ffmpeg in to virtual environment - ldg Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to install ffmpeg in order to use it on OpenAI to record videos. I have installed it using brew install ffmpeg but somehow when I compile my code I get the same error, it is like the package is not recognized by my virtualenv where I am working. Error on Python console: raise error.DependencyNotInstalled("""Found neither the ffmpeg nor avconv executables. On OS X, you can install ffmpeg via `brew install ffmpeg`. On most Ubuntu variants, `sudo apt-get install ffmpeg` should do it. On Ubuntu 14.04, however, you'll need to install avconv with `sudo (...)

21 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:12
  Unity webgl build Video recording and sharing error in android [closed] - Rithika gl Newest 'ffmpeg' Questions - Stack Overflow
  Unity webgl build Video recording and sharing error.I have been facing issues with the sharing & saving option in all web browsers , in unity webgl build in android but everything works on iOS and the desktop . Used ffmpeg but causes several errors , also used conversion techniques like mp4 format and webm as well.

20 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 00:45
  Alexa developer console gives me "The audio is not of a supported MPEG version" Error - Boban BoBo Banjevic Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make an Alexa skill, and I am using audio mp3 files stored is S3, lambda function has access to my DynamoDb and ultimately S3. But I have an issue with my audio files. I keep on getting "The audio is not of a supported MPEG version" when I test alexa skill. I tried multiple ffmpeg -i file conversions. When I type ffprobe -v quiet -print_format json -show_format -show_streams "Piano.mf.A1.audio10.mp3" this is what i have for my file down below: Input #0, mp3, from 'Piano.mf.A1.audio10.mp3': Metadata: encoder : Lavf61.9.107 Duration: (...)

19 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:53
  laptop screen recorder built using python & ffmpeg can generate only video file in AVI format succesfully,generating corrupted MP4 file as output? [closed] - Rupashree Roy Newest 'ffmpeg' Questions - Stack Overflow
  I have build laptop screen recorder with internal and external audio using python and ffmpeg,but it couldn't store output file in Other video formats,excepts AVI,if I try to store it in MP4 format,ut's showing file is corrupted,what to do/ Here's the code, enter link description here -- enter link description here

18 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:51
  FFMPEG: preset not found in Windows Vista - StackOverflowNewbie Newest 'ffmpeg' Questions - Stack Overflow
  I download FFMPEG from http://www.videohelp.com/tools/ffmpeg#download and saved it in my c:\\program files\\ffmpeg (Windows Vista). My Path's first 2 entries are: c:\\program files\\ffmpeg\\bin;c:\\program files\\ffmpeg\\presets; I found the following command on the net (http://paulrouget.com/e/converttohtml5video/) ffmpeg -i input.avi -acodec libvorbis -ab 96k -vcodec libx264 -vpre main -level 21 -refs 2 -b 345k -bt 345k -threads 0 -s 320x240 output.mp4 When I run this on command line, I get the following error: File for preset main (...) -- http://www.videohelp.com/tools/ffmpeg#download
• 20:21
  Is it possible to embed ffplay? - EthanL Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg's viewer, ffplay, has a lot of great options for optimizing viewing experience. I've been able to get it to nicely display an RTSP stream at low latency. However, it's been difficult to include it in a GUI. Is that possible? Is there a GUI that does that? Note: I am NOT trying to embed in a browser, or just toss the window on top of a GUI. Best solution: desktop GUI that includes ffplay in a widget First alternative: desktop GUI that has variable opacity. If the ffplay window is layered below the GUI, and the GUI is transparent, it could look (...)
• 17:40
  How to load file in ffmpeg in chunks? - developer1 Newest 'ffmpeg' Questions - Stack Overflow
  I'm having a problem when loading a larger file with ffmpeg in safari mobile, it crashes while doing that. Currently I'm loading the whole file at once await ffmpeg.writeFile(inputFileName, await fetchFile(file)); and to my understanding safari tries to load it in-memory in one go and fails. How can I work around this issue? Maybe split the file to chunks? Maybe streaming? Thank you.
• 18:32
  Ffmpeg to duplicate an audio stream and encode this new stream - sion Newest 'ffmpeg' Questions - Stack Overflow
  I have some video files that I need to re-encode due to compatibility issues. They are currently mkv files with h.264 video and ac3-a52 audio. I want to keep the h.264 video, convert the container to m4v and create two audio tracks, one with the original ac3-a52 and one copied from that but in aac stereo. I assume there has to be some sort of audio stream mapping command but I don't know how to map and re-encode at the same time. What command should I enter into ffmpeg to achieve this? Also, what is the difference between ac3 and ac3-a52? Will an apple TV still be (...)
• 18:53
  How to have a clean transition when concat MTS files using ffmpeg? - pho Newest 'ffmpeg' Questions - Stack Overflow
  I have been struggling for a while and I hope someone can help me. What I want to do: 1- seek MTS files 2- conact them without re-encoding them How I do that: I write a file concatList.txt file 'file1.MTS' file 'file1_cut.MTS' I execute ffmpeg -y -i file1.MTS -ss 11.5 -c copy -copyts file1_cut.MTS ffmpeg -y -f concat -i concatList.txt -c copy output.MTS (11.5s corresponds to an I-frame) The transition between the two videos in output.MTS is very buggy during more than 1s To dig in, I tried to analyse (...)
• 09:28
  How to implement FFMPEG retry logic [closed] - M9A Newest 'ffmpeg' Questions - Stack Overflow
  I am recording a live stream using the following code: ffmpeg -i -c copy output.mp4 This works fine for occasions where the stream is segmented in the sense that it will retry if the stream drops. However if the url no longer exists or returns a code such as 403, it will still retry, resulting in an infinite loop of retrying when the stream doesnt exist. How can I retry for segments but maybe retry only a few times for page errors?
• 13:23
  why mpd file contain same resolution AdaptationSet - Jahid Hasan Antor Newest 'ffmpeg' Questions - Stack Overflow
  this is the code that i used. this code create a minifest.mpd file, with the same resolution AdaptationSet set const createCourse = async (req: Request, res: Response, next: NextFunction) => try const VIDEO_STORAGE_PATH = path.join(__dirname, "../../public/uploads").replace(/\\\\/g, "/"); const videoId = req.body.videoId; const inputPath = path.join(VIDEO_STORAGE_PATH, "original", `$videoId.mp4`).replace(/\\\\/g, "/"); const outputDir = path.join(VIDEO_STORAGE_PATH, "dash", videoId).replace(/\\\\/g, "/"); if (!fs.existsSync(outputDir))  (...)
• 13:23
  Problems encoding audio stream for RTMP server using ffmpeg libraries - Filipe José Newest 'ffmpeg' Questions - Stack Overflow
  I am working on an C++ application that captures audio using miniaudio, and sends the data to a RTMP server running on nginx which will generate an HLS stream to be consumed by a web browser. I was successful in encoding the data and writing to an .flv file (which I believe to be the container for RTMP), and everything works out fine. I've also tested the server by running the ffmpeg cli tool directly, and the RTMP server is generating the .m3u8 playlist file as well as the .ts files correctly. The problem I'm having is that when I change the output on (...)
• 14:04
  Decoding the h.264 stream from a serial port - Peter Newest 'ffmpeg' Questions - Stack Overflow
  I would like to know if there is a reliable way to decode an H.264 NAL stream coming through a serial port using software. So far, I have managed to decode a single frame using a python script. In this script, I first write the incoming data to a file, and when the end-of-frame marker 00_00_00_01 appears, I display the frame using ffplay. import serial import subprocess import os import time ser = serial.Serial('COM3', 115200, timeout=1) output_file = "output.264" # Variable to store the ffplay process ffplay_process = (...)
• 12:11
  ffmpeg: is there a fast way for extracting several thumbnails from a video without parsing the video from the beginning every time? - archie Newest 'ffmpeg' Questions - Stack Overflow
  I tried several ways for extracting sample frames from a video file with ffmpeg. I found out that the fastest way is by placing the following command in a loop: ffmpeg -ss $frame_time -i "$input_video" -frames:v 1 -vf scale=256:-1 "$Work_dir/thumb$thumb_index.jpg" (I have omitted the parts of the command that are not relevant to the question, such as drawtext, hide_banner, loglevel). The variables frame_time and thumb_index are initialized before the loop and incremented by a fixed amount at every step: +1 for thumbs_index and $duration/25 for frame_time. I read in the (...) -- https://trac.ffmpeg.org/wiki/Seeking
• 12:50
  Decoding the h.264 stream from a COM port - Peter Newest 'ffmpeg' Questions - Stack Overflow
  I would like to know if there is a reliable way to decode an H.264 NAL stream coming through a serial port using software. So far, I have managed to decode a single frame using a python script. In this script, I first write the incoming data to a file, and when the end-of-frame marker 00_00_00_01 appears, I display the frame using ffplay. import serial import subprocess import os import time ser = serial.Serial('COM3', 115200, timeout=1) output_file = "output.264" # Variable to store the ffplay process ffplay_process = (...)

17 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:21
  Loading a larger file with ffmpeg crashes on safari mobile - developer1 Newest 'ffmpeg' Questions - Stack Overflow
  My use case is to extract audio from video file to minimize the size of sent file over network. Everything works fine on a computer (chrome, safari) but it's either stuck or crashes on ios safari. AFAIK it crashes not while executing the ffmpeg command, but while trying to load the input file, which is quite big (500MB+). I load the ffmpeg like this: const baseURL = "https://unpkg.com/ⓐffmpeg/core-mtⓐ0.12.6/dist/esm"; await ffmpeg.load( coreURL: await toBlobURL(`$baseURL/ffmpeg-core.js`, "text/javascript"), wasmURL: await (...)
• 12:55
  Convert .flac to .mp3 with ffmpeg, keeping all metadata - Vito Gentile Newest 'ffmpeg' Questions - Stack Overflow
  How can I convert .flac to .mp3 with ffmpeg, keeping all metadata (that is converting Vorbis comment in .flac files to ID3v2 metadata of .mp3)?

16 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:06
  FFMPEG : Invalid data found when processing input - Schüler Newest 'ffmpeg' Questions - Stack Overflow
  I am unable to upload mp3 or mp4 is there any specific path format? Here is my code. I have tried this also ffmpeg -i Video/" + Name + " -ss 01:30 -r 1 -an -vframes 1 -f mjpeg Video/" + Name + ".jpg exec("ffmpeg -y -i Video/" + Name + " -map_metadata -1 -ab 192k Video/" + Name + ".jpg", function(err) if (err) console.log(err) console.log('Done', 'Image' : 'Video/' + Name + '.jpg'); ); Here is the error Error: Command failed: ffmpeg -y -i (...)
• 03:12
  ffmpeg produces different file sizes between MacOS and Linux [closed] - kojow7 Newest 'ffmpeg' Questions - Stack Overflow
  I have several .wav files. When I use ffmpeg to convert to m4a, it produces different file sizes between the two systems. Example: original.wav (on MacOS) - 418004 bytes original.wav (on Linux) - 418004 bytes Method 1: for f in *.wav; do ffmpeg -i "$f" -c:a aac -b:a 96k "$f%.wav.m4a"; done MacOS - 18408 bytes Linux - 15814 bytes Method 2: for f in *.wav; do ffmpeg -i "$f" -c:a aac -b:a 192k "$f%.wav.m4a"; done MacOs - 36428 bytes Linux - 26060 bytes Method 3: for f in *.wav; do ffmpeg -i "$f" -c:a aac "$f%.wav.m4a"; done  (...)
• 02:55
  How to change metadata with ffmpeg/avconv without creating a new file? - Stephan Kulla Newest 'ffmpeg' Questions - Stack Overflow
  I am writing a python script for producing audio and video podcasts. There are a bunch of recorded media files (audio and video) and text files containing the meta information. Now I want to program a function which shall add the information from the meta data text files to all media files (the original and the converted ones). Because I have to handle many different file formats (wav, flac, mp3, mp4, ogg, ogv...) it would be great to have a tool which add meta data to arbitrary formats. My Question: How can I change the metadata of a file with ffmpeg/avconv (...)

15 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:49
  Can m3u8 files have mp4 file urls? - 89neuron Newest 'ffmpeg' Questions - Stack Overflow
  I am in a situation where I have my flv video converted to mp4 and then I am streaming this as http url using my nginx server. For multibitrate supoport on html5 I have created a m3u8 file like this : #EXTM3U #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=200111, RESOLUTION=512x288 http://streamer.abc.com:8080/videos/arvind1.mp4 #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=3000444, RESOLUTION=400x300 http://streamer.abc.com:8080/videos/arvind1.mp4 #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=400777, (...)

14 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 17:29
  Using FFmpeg encode and UDP with a Webcam? - Rendres Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get frames from a Webcam using OpenCV, encode them with FFmpeg and send them using UDP. I did before a similar project that instead of sending the packets with UDP, it saved them in a video file. My code is. #include #include #include #include extern "C" #include #include #include #include #include #include #include #include using namespace std; using namespace cv; #define WIDTH 640 #define HEIGHT 480 #define CODEC_ID AV_CODEC_ID_H264 #define (...)
• 16:48
  c++ - using FFmpeg encode and UDP with a Webcam - Rendres Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get frames from a Webcam using OpenCV, encode them with FFmpeg and send them using UDP. I did before a similar project that instead of sending the packets with UDP, it saved them in a video file. My code is. #include #include #include #include extern "C" #include #include #include #include #include #include #include #include using namespace std; using namespace cv; #define WIDTH 640 #define HEIGHT 480 #define CODEC_ID (...)
• 13:23
  Discord bot: Fix ‘FFMPEG not found’ - Travis Sova Newest 'ffmpeg' Questions - Stack Overflow
  I want to make my Discord bot join voice chat, but every time I run the command, I get an error message in the log(cmd) saying, FFMPEG not found. Picture of the error: This is the code: client.on('message', message => // Voice only works in guilds, if the message does not come from a guild, // we ignore it if (!message.guild) return; if (message.content === '/join') // Only try to join the sender's voice channel if they are in one themselves if (message.member.voiceChannel)  (...) --
• 12:02
  How to combine multiple images and multiple audio files into one video with ffmpeg? - nachocab Newest 'ffmpeg' Questions - Stack Overflow
  I have two images image1.png and image2.png, they both have the same dimensions. I also have two audio files audio1.wav and audio2.wav they each have different lengths. I want to make a video that shows image1.png during audio1.wav and then image2.png over audio2.wav. I've tried two methods, but they don't work. The images show correctly, but the durations are not synced with the audio. Method 1: create videos separately and combine them: image1 => video1 ffmpeg -loop 1 \\ -y \\ -i "image1.png" \\ -i "audio1.wav" \\ -c:v (...) -- , , , ,
• 00:18
  ffmpeg + docker: make install not installing libx265 when building the image, but works inside container - Alexander Santos Newest 'ffmpeg' Questions - Stack Overflow
  I have this Dockerfile FROM ubuntu:22.04 WORKDIR /usr/local/src ENV PKG_CONFIG_PATH=/usr/local/lib/pkgconfig RUN apt update && apt install -y \\ build-essential cmake git pkg-config \\ libxml2-dev yasm nasm libtool autoconf automake \\ libx264-dev libx265-dev libnuma-dev libvpx-dev \\ libfdk-aac-dev libmp3lame-dev libopus-dev \\ libass-dev libfreetype6-dev libvorbis-dev RUN apt-get install libx265-dev RUN git clone --depth 1 https://github.com/fraunhoferhhi/vvenc.git && \\ cd vvenc && \\  (...)

13 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:48
  How can I crop and encode a video using flutter natively, now that flutter_ffmpeg is discontinued with no alternatives? [closed] - Rageh Azzazy Newest 'ffmpeg' Questions - Stack Overflow
  As of January 6, 2025, FFmpegKit is officially retired (Taner's article). This also affects the flutter_ffmpeg and ffmpeg_kit_flutter packages. Most packages for executing video editing commands were built depending on them and so won't work after April 1, 2025 as mentioned in the package documentation and Taner's article. Some packages that depend on flutter_ffmpeg or ffmpeg_kit_flutter are: video_trimmer zero_video_trimmer flutter_video_trimmer video_trim bemeli_compress video_trimmer_pro ... others Editing video using (...) -- As of January 6, 2025, FFmpegKit is officially retired (Taner's article).
• 18:03
  How can I use physical computer's GPU on VMware Workstation? - ching Newest 'ffmpeg' Questions - Stack Overflow
  I want to use the GPU to accelerate video transcoding time by using FFmpeg on the virtual machine, VMware Workstation. When I use the command lspci | grep VGA, the output is 00:0f.0 VGA compatible controller: VMware SVGA II Adapter It seems that I only can use its own Graphic Card on VMware, right? How can I use my host computer's GPU, NVIDIA Quadro K2000, from a program running in a guest VM? Or is there another solution that can solve the problem mentioned in the (...)
• 17:59
  Convert video MP4 audio to MP3 using C# - Tom Lee Newest 'ffmpeg' Questions - Stack Overflow
  I have some videos in MP4 format and I'm trying to extract the audio from them. My code is: public static void Converter(string toConvert) toConvert = VideoFile + ".mp4"; var join = VideoFile.Split("-").ToList(); VideoFile = string.Format("0 - 1", join[0], join[1]); var outputFile = VideoFile + ".mp3"; var mp3Out = ""; var ffmpegProcess = new Process StartInfo = UseShellExecute = false, RedirectStandardInput = true, RedirectStandardOutput = true,  (...)
• 11:04
  Why does Apple support H.265 playback, but not when using HLS? [closed] - clark wu Newest 'ffmpeg' Questions - Stack Overflow
  Apple devices (iPhone, iPad, macOS Safari) can natively play H.265 (HEVC) videos in .mp4 or .mov format. However, when I try to convert the same video to HLS, it fails to play. Here’s what I tested: Test Cases ✅ Directly playing H.265 .mp4 → Works fine ❌ H.265 + Opus → HLS (fMP4) → Fails ❌ H.265 + AAC → HLS (TS) → Fails ✅ H.264 + Opus → HLS fMP4 → Works fine (video + audio) ✅ H.264 + Opus → HLS TS → Video plays, but no audio ❌ H.265 + AAC → HLS fMP4 → Doesn’t play at all FFmpeg Commands Used 1️⃣ H.265 + Opus (fMP4 (...)
• 11:17
  Force FFmpeg to use a non-standard codec in container/extension (opus in .m4b) - Craig Stevenson Newest 'ffmpeg' Questions - Stack Overflow
  For my audiobooks I am using a non standard combination of using the opus audio codec in m4b files (this works without issue on most devices for me as they support opus audio streams in mp4 containers). currently having to instruct ffmpeg to encode it into mp4 and i manually change the extension to m4b, as it gives this error if i try and do it directly despite it being the same container format: [ipod ⓐ 0x64872b2de9c0] Could not find tag for codec opus in stream #1, codec not currently supported in container Is there any comand or options to let me overide this and (...)
• 02:46
  flutter_ffmpeg is discontinued with no alternatives? - Rageh Azzazy Newest 'ffmpeg' Questions - Stack Overflow
  Based on this article by Taner Sener https://tanersener.medium.com/saying-goodbye-to-ffmpegkit-33ae939767e1 and after the discontinuation of flutter_ffmpeg and ffmpeg_kit_flutter packages. most packages for executing video editing commands were built depending on them and so won't work After April 1, 2025 as mentioned in the package documentation and Taner's article. example of packages depending on flutter_ffmpeg or ffmpeg_kit_flutter (...) -- https://tanersener.medium.com/saying-goodbye-to-ffmpegkit-33ae939767e1
• 02:05
  No accelerated colorspace conversion found from yuv420p to argb - Zac Chan Newest 'ffmpeg' Questions - Stack Overflow
  I am a novice at ffmpeg and have recently taken over a code base built by a previous engineer. The FFmpeg code is on an app engine that will edit the videos when they are uploaded. This code generated a title animation that will later be used as an overlay. exports.generateTitleAnimation = function(metadata, destPath, options = ) const peeqLogoPath = "/app/assets/peeq-logo.png"; const whiteBarMovPath = "/app/assets/whiteBar.mov"; const titleFontPath = "/app/assets/Sofia-Pro-Black.otf"; const dateStrFontPath = "/app/assets/Sofia-Pro-Medium.otf"; const (...)

12 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:06
  Extracting audio from video using fluent-ffmpeg - Idi Favour Newest 'ffmpeg' Questions - Stack Overflow
  Im trying to extract the audio from a video, an error is occuring Error converting file: Error: ffmpeg exited with code 234: Error opening output file ./src/videos/output-audio.mp3. Error opening output files: Invalid argument I use this same directory for my video compression that runs before this one and it works. ffmpeg() .input(url) .audioChannels(0) .format("mp3") .output("./src/videos/output-audio.mp3") .on("error", (err) => console.error(`Error converting file: $err`)) .on("end", async () => console.log("audio transcripts");  (...)
• 11:33
  How to create a circular video and overlay it on an image background while preserving transparency for MP4 output? - Mykyta Manuilenko Newest 'ffmpeg' Questions - Stack Overflow
  I have the following FFmpeg command that overlays a transparent webm video on a background image and preserves the transparency: ffmpeg -t 5 -framerate 25 -loop 1 -i "bg_image.png" -c:v libvpx-vp9 -i "transparent_video.webm" -y -filter_complex "[0:v]format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2[bg_image];[1:v]setpts=PTS-STARTPTS,setsar=1,pad=ceil(iw/2)*2:ceil(ih/2)*2[el_out_1];[bg_image][el_out_1]overlay=82:250,format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2[raw_video];[raw_video]format=yuv420p,pad=ceil(iw/2)*2:ceil(ih/2)*2" -vcodec libx264 -f mp4 -t 5 -an -crf 23 -preset medium -copyts (...)

11 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:39
  How to split audio file into equal-length segments with ffmpeg? - GPWR Newest 'ffmpeg' Questions - Stack Overflow
  I want to split an audio file into several equal-length segments using FFmpeg. I want to specify the general segment duration (no overlap), and I want FFmpeg to render as many segments as it takes to go over the whole audio file (in other words, the number of segments to be rendered is unspecified). Also, since I am not very experienced with FFmpeg (I only use it to make simple file conversions with few arguments), I would like a description of the code you should use to do this, rather than just a piece of code that I won't necessarily understand, if possible. Thank you in (...)
• 16:25
  How to improve web camera streaming latency to v4l2loopback device with ffmpeg? - Made by Moses Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream my iPhone camera to my PC on LAN. What I've done: HTTP server with html page and streaming script: I use WebSockets here and maybe WebRTC is better choice but it seems like network latency is good enough async function beginCameraStream() const mediaStream = await navigator.mediaDevices.getUserMedia( video: facingMode: "user" , ); websocket = new WebSocket(SERVER_URL); websocket.onopen = () => console.log("WS connected"); const options = mimeType: "video/mp4", (...)
• 12:38
  Is it possible to redirect the messages libffmpeg prints to stderr? - wallefan Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a program that uses libffmpeg to do some transcoding internally, but I find it has a tendency to print a lot of things to the process's stderr. I want to redirect those messages somewhere more intelligent. To be clear, I am NOT talking about spawning the ffmpeg executable as a subprocess and redirecting its stdio! That is trivial in any programming language. I'm using ffmpeg as a C library (well, Rust bindings around a C library in my case) and I'm wondering if libffmpeg provides a hook for writing to stderr that I can override. If no such hook (...)
• 12:37
  av_log() function in ffmpeg to output to a file - TilakVarisetty Newest 'ffmpeg' Questions - Stack Overflow
  I am logging time-stamps, and frames using av_log() to the console. Unfortunately, the console does not pipe to a file. Is there a way to add function or other options to log to the file directly, instead of the console?
• 11:32
  Linker error by trying example program with ffmpeg - Chris Newest 'ffmpeg' Questions - Stack Overflow
  I think this might be a stupid question and I'm just blind but that thing is driving me nuts for hours now. I downloaded ffmpeg and build it. Now I want to try the thing out in a program but I can't setup cmake to link ffmpeg properly and have no idea what is wrong. The linker always tells me this: christophⓐchristoph-ThinkPad-T490:~/develop/ffmpg_example/build$ make [ 50%] Linking CXX executable test CMakeFiles/test.dir/main.cxx.o: In function `main': main.cxx:(.text+0x180): undefined reference to (...)

10 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 14:23
  How to seek one frame forward in ffmpeg [closed] - Summit Newest 'ffmpeg' Questions - Stack Overflow
  i want to seek one frame forward when i call this function but it gets stuck on the first frame seeked and does not move forward. void seekFrameUp() if (!fmt_ctx || video_stream_index == -1) return; AVRational frame_rate = fmt_ctx->streams[video_stream_index]->r_frame_rate; if (frame_rate.num == 0) return; // Avoid division by zero // Compute frame duration in AV_TIME_BASE_Q int64_t frame_duration = av_rescale_q(1, av_make_q(frame_rate.den, frame_rate.num), AV_TIME_BASE_Q); int64_t next_pts = requestedTimestamp + (...)
• 05:32
  How to Use SVG Image Files Directly in FFmpeg? [closed] - Pubg Mobile Newest 'ffmpeg' Questions - Stack Overflow
  I generated a bar chart race using the Flourish Studio website and captured the frames as a PDF sequence using a Python Playwright script. Then, I converted all the PDF files into SVG format using the following Python script, because SVG is the only image format that maintains quality without loss when zoomed in: import os import subprocess import multiprocessing # Define paths pdf2svg_path = r"E:\\Desktop\\dist-64bits\\pdf2svg.exe" # Full path to pdf2svg.exe input_dir = r"E:\\Desktop\\New folder (4)\\New folder" output_dir = r"E:\\Desktop\\New folder (4)\\New (...)
• 14:29
  FFMPEG compile with x264 support for Android - Pecana Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to build ffmpeg extensions for media3 (ExoPlayer) for Android https://github.com/androidx/media/tree/release/libraries/decoder_ffmpeg Using the default settings everything is fine but if I try to add support to libx264 the build failed. I compiled x264 for Android locally and it worked so the .so file for arm64 is present, I added it to the pkg-config with : export PKG_CONFIG_PATH=/build/x264/arm64/lib/pkgconfig:$PKG_CONFIG_PATH but when I try to build ffmpeg with the following command it fails : ./configure \\ --prefix=/build/ffmpeg (...) -- https://github.com/androidx/media/tree/release/libraries/decoder_ffmpeg
• 05:11
  OpenGL to FFMpeg encode [closed] - Ian A McElhenny Newest 'ffmpeg' Questions - Stack Overflow
  I have a opengl buffer that I need to forward directly to ffmpeg to do the nvenc based h264 encoding. My current way of doing this is glReadPixels to get the pixels out of the frame buffer and then passing that pointer into ffmpeg such that it can encode the frame into H264 packets for RTSP. However, this is bad because I have to copy bytes out of the GPU ram into CPU ram, to only copy them back into the GPU for encoding. How do you do bypass the need to copy to and from the (...)
• 01:01
  No such filter in ffmpeg - sneha desai Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create the slideshow with below command. Here is the command I have executed: ffmpeg -loop 1 -t 1 -i /sdcard/input0.png -loop 1 -t 1 -i /sdcard/input1.png -loop 1 -t 1 -i /sdcard/input2.png -loop 1 -t 1 -i /sdcard/input3.png -loop 1 -t 1 -i /sdcard/input4.png -filter_complex "[0:v]trim=duration=15,fade=t=out:st=14.5:d=0.5[v0]; [1:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v1]; [2:v]trim=duration=15,fade=t=in:st=0:d=0.5,fade=t=out:st=14.5:d=0.5[v2];  (...) -- https://github.com/WritingMinds/ffmpeg-android-java

9 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:06
  ffmpeg arguments for youtube upload [duplicate] - Hoopes Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently having an issue in my ios app where youtube sharing of a video created by ffmpeg seems broken. I am starting with an audio file, and an image that I will use as the static background of the video. ffmpeg -y -i "/path/to/audio.m4a" -r 24 -i "/path/to/background.png" -codec:a aac_at -codec:v h264_videotoolbox -brand mp42 -vf "scale=1080:1080" -vf "scale=out_color_matrix=bt709" -color_primaries bt709 -color_trc bt709 -colorspace bt709 -movflags +faststart "output.mp4" Note that since (...) --
• 19:50
  Decoding and playing audio with ffmpeg and XAudio2 - frequency ratio wrong - Brent de Carteret Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to decode audio and output it using the XAudio2 API, it works and plays synced with the video output using the pts. But it's high pitched (i.e. sounds like chipmunks). Setting breakpoints I can see it has set the correct sample rate from the audio codec in CreateSourceVoice. I'm stumped. Any help would be much appreciated. CDVDAUDIO.cpp #include "DVDAudioDevice.h" HANDLE m_hBufferEndEvent; CDVDAudio::CDVDAudio() m_pXAudio2 = NULL; m_pMasteringVoice = NULL; m_pSourceVoice = NULL; m_pWfx = (...)
• 16:46
  How to Capture a Sequence of High-Quality PDF Frames from a Website (Without Screen Recording)? - Pubg Mobile Newest 'ffmpeg' Questions - Stack Overflow
  In Firefox, I can take very high-quality screenshots of a webpage by using Ctrl + P and saving the page as a PDF. This method preserves the text, images, and code in excellent resolution. Now, I have created a movable bar chart race in Flourish Studio and want to convert it into a high-quality video. However, I do not want to use screen recording tools. My Goal: I want to capture 30 high-resolution PDF frames from the website at different points in time (like a video sequence). Ideally, I need a tool or script that can automate the process of saving multiple PDFs from (...)
• 16:04
  How can I dynamically update metadata in audio output with libav so that updates appear in MPV? - Teddy Newest 'ffmpeg' Questions - Stack Overflow
  My ultimate goal is to proxy an internet radio station and programmatically add metadata to it during the stream that can be displayed and updated in MPV, the media player playing the audio. The metadata I would like to add is primarily the song title, but ideally additional information including artist, composer, and album. I envision running the proxy program like this: $ curl https://example.com/stream.mp3 | ./proxy_add_metadata | mpv - or maybe this: $ ./proxy_add_metadata & #=> $ mpv How could I make song metadata updates (...)

8 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:41
  Embedding "Dolby Digital Plus with Dolby Atmos" into MP4 using ffmpeg - Krystian Newest 'ffmpeg' Questions - Stack Overflow
  How can I encode Dolby Atmos into MP4? I am using this command ffmpeg -i input.mp4 -i input.ec3 -map 0:v -map 1:a -c:v copy -c:a copy -disposition:a default -metadata:s:a:0 complexity_index=16 -metadata:s:a:0 title="Dolby Atmos" output_test.mp4 I have to provide every single piece of data that is inside this EC3 file. I have noticed that when I am running this command the MP4 file contains actual Dolby Atmos stream but it's missing complexity index. Raw EC3 file has Complexity Index set to 16 but after adding it to MP4 file the complexity index is not present and this MP4 is not (...)
• 02:45
  I use the bramp/ffmpeg-cli-wrapper of java. How to terminate the execution in the thread? - Hao Tan Newest 'ffmpeg' Questions - Stack Overflow
  I want to use ffmpeg to achieve streaming function First I created a thread pool private final Map taskThreads = new ConcurrentHashMap<>(); Thread taskThread = new Thread(() -> try private void startTask(Device task) Thread taskThread = new Thread(() -> FFmpegBuilder builder = new FFmpegBuilder() .setInput(source) .overrideOutputFiles(true) .addOutput(destination) .setFormat("flv") .addExtraArgs("-c", "copy") .done(); FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);  (...)
• 01:36
  Undefined reference to FFMPEG function despite linking via CMake - MysticTortoise Newest 'ffmpeg' Questions - Stack Overflow
  I am attempting to integrate FFMPEG's libav library into my project. I use CMake and want to build FFmpeg from source since I want to configure things specifically for my use case. I have compiled the files into .a archive static libraries which are included in my project, but i continually get an error: CMakeFiles/ffmpegtest.dir/main.cpp.obj:main.cpp:(.text+0xc): undefined reference to avformat_alloc_context I've tried a variety of solutions online but none seem to work. I've stripped the project down to the bare minimum and yet it continues to produce this (...)

7 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:36
  How to stream frames from ffmpeg to a process? - Vorac Newest 'ffmpeg' Questions - Stack Overflow
  I would like to encrypt camera frames before transmitting. For that purpose the encrypting process needs to get the raw frames through some mode of IPC. I tried reading through the steaming API docs but got lost. This is an "what approach" question instead of a "working solution" one. -- steaming API docs
• 20:42
  FFMpeg D3D11 decoded image to OpenCV UMat - Spuriga Newest 'ffmpeg' Questions - Stack Overflow
  I would like to copy FFMpeg decoded image data to an UMat WITHOUT copying it to the CPU RAM: Is there any way to do it? What if there are two or more GPU card in the PC? I have this code for av_image_copy_to_buffer, works fine: int copy_frame_to_buffer(void* handle, void* buffer, int bufferSize) int ret = 0; int calculatedBufferSize; VideoDecoderContext* context = static_cast(handle); calculatedBufferSize = av_image_get_buffer_size(static_cast(context->frame->format), context->frame->width, context->frame->height, 1); if (...) --
• 17:32
  ffmpeg command not found but pip list shows ffmpeg - your_doomsday07 Newest 'ffmpeg' Questions - Stack Overflow
  I have been trying to install ffmpeg using the command pip install ffmpeg and I am doing this in a server where we dont have sudo permissions. On writing ffmpeg I get ffmpeg: command not found. Then I checked with pip list and it showed ffmpeg. Please help me.
• 08:38
  rtsp feed fails intermittently using node js - Prem Kumar Newest 'ffmpeg' Questions - Stack Overflow
  I am new to node.js and was debugging a code written by another developer. We have a an IP camera which provides rtsp feed which is being displayed on a webpage. I can view the camera feed using the rtsp url in VLC but the web viewer of camera feed usually gives white screen although it somehow works intermittently. I was told that it used to work properly when the machine was on Ubuntu 20.04 now it has been updated to Ubuntu 24. Index.js const Stream = require("node-rtsp-stream-jsmpeg"); const fs = require("fs"); const https = require("https"); const (...) -- ,
• 01:17
  FFmpeg extract every frame with timestamp - Ruan Matt Newest 'ffmpeg' Questions - Stack Overflow
  How can I extract every frame of an video with the respective timestamp? ffmpeg -r 1 -i in.mp4 images/frame-%d.jpg This code extracts all frames, but without timestamp. Since Windows do not allow ":" in filenames, I'll replace it for ".". I would like something like this: frame-h.m.s.ms.random_value.jpg frame-00.10.15.17.1.jpg frame-00.11.16.04.2.jpg frame-00.11.17.11.3.jpg frame-00.11.17.22.4.jpg frame-00.12.04.01.5.jpg ... The reason of "random id" is to allow repeated frames without replacing them. I have tried: ffmpeg (...)
• 02:06
  how to add effect to audio, sound like a phone call phone, inner monologue, or sounds like a man/woman? [closed] - Mathew Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to apply different audio effects, such as making audio sound like a phone call. Below is my current approach. As you can see, I'm using multiple filters and simple algorithms to achieve this effect, but the output quality isn't ideal. I've looked into FFmpeg filters and noticed mentions of LADSPA/LV2 plugins. Are these viable solutions? Any other suggestions would be greatly appreciated. public static void applySceneEffect(String inputPath, String outputPath, int sceneType) LOGGER.info("apply scene effect to ", sceneType, (...)

6 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:30
  Mp4 video from ffmpeg to rtsp format - damini chopra Newest 'ffmpeg' Questions - Stack Overflow
  I want to MP4 file feed from FFmpeg to RTSP stream. I am using below command : ffmpeg -re -i /root/test_video.mp4 -f rtsp -muxdelay 0.1 http://x.x.x.x:8050/feed1.ffm Connection to tcp://x.x.x.x:8050?timeout=0 failed: Connection refused Could not write header for output file #0 (incorrect codec parameters ?): Connection refused Error initializing output stream 0:0 -- [aac ⓐ 0x25b3200] Qavg: 11662.538 [aac ⓐ 0x25b3200] 2 frames left in the queue on closing Conversion failed! Please (...)
• 18:32
  Batch Convert all .MOV in a directory to mp4s - anjchang Newest 'ffmpeg' Questions - Stack Overflow
  Just downloaded a whole bunch of videos from my phone to desktop. How to convert all the .MOV files in a directory to mp4s quickly, using ffmpeg.
• 14:49
  How does FFmpeg determine the “attached pic” and “timed thumbnails” dispositions of an MP4 track? - obskyr Newest 'ffmpeg' Questions - Stack Overflow
  The Issue FFmpeg has a concept of “dispositions” – a property that describes the purpose of a stream in a media file. For example, here are the streams in a file I have lying around, with the dispositions emphasized: Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 251 kb/s (default) Metadata: creation_time : 2021-11-10T20:14:06.000000Z handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream #0:1[0x2](und): Video: mjpeg (Baseline) (jpeg / 0x6765706A), yuvj420p(pc, bt470bg/unknown/unknown), (...) -- MP4v2, MP4 Box, the files’ respective atom trees,, searching for “attached_pic”, the MP4 muxer movenc.c
• 14:27
  How to stream synchronized video and audio in real-time from an Android smartphone using HLS while preserving orientation metadata? - Jérôme LAROSE Newest 'ffmpeg' Questions - Stack Overflow
  Hello, I am working on an Android application where I need to stream video from one or two cameras on my smartphone, along with audio from the microphone, in real-time via a link or web page accessible to users. The stream should be live, allow rewinding (DVR functionality), and be recorded simultaneously. A latency of 1 to 2 minutes is acceptable, and the streaming is one-way. I have chosen HLS (HTTP Live Streaming) for its browser compatibility and DVR support. However, I am encountering issues with audio-video synchronization, managing camera (...)
• 09:51
  Are there any libraries on adding effect to audio, like phone, inner monologue, or sounds like a man/woman? [closed] - Mathew Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to apply different audio effects, such as making audio sound like a phone call. Below is my current approach. As you can see, I'm using multiple filters and simple algorithms to achieve this effect, but the output quality isn't ideal. Since I need to implement many sound effects/filters, are there any ready-to-use libraries that could help? I've looked into FFmpeg filters and noticed mentions of LADSPA/LV2 plugins. Are these viable solutions? Any other suggestions would be greatly appreciated. public static void applySceneEffect(String (...)

5 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:08
  Generating grey nosie with FFmpeg - Azat Khabibulin Newest 'ffmpeg' Questions - Stack Overflow
  I have the following sound configuration: sub-bass: -inf dBFS low bass: -inf dBFS bass: -inf dBFS high bass: -inf dBFS low mids: 0 dBFS mids: 0 dBFS high mids: -inf dBFS low treble: -inf dBFS treble: -inf dBFS high treble: -inf dBFS If you wonder what is it, you can listen to this sound here. I'd like to create an audio file provided this sound configuration. FFmpeg filters seem like a good fit, but are not a strict requirement. It may be any command-line tool that handles this kind of task well. The problem is that I (...) -- here
• 20:57
  Can't show image with opencv when importing av - Flojomojo Newest 'ffmpeg' Questions - Stack Overflow
  When importing the PyAv module, I am unable to show an image with opencv using imshow() Code without the PyAv module (works as expected) import cv2 img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) Code with the import (doesn't work, just hangs) import cv2 import av img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) OS: Linux arch 5.18.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 09 Jun 2022 16:14:10 +0000 x86_64 GNU/Linux Am I doing (...)
• 10:56
  How does FFmpeg determine the dispositions of an MP4 track? - obskyr Newest 'ffmpeg' Questions - Stack Overflow
  The Issue FFmpeg has a concept of “dispositions” – a property that describes the purpose of a stream in a media file. For example, here are the streams in a file I have lying around, with the dispositions emphasized: Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 251 kb/s (default) Metadata: creation_time : 2021-11-10T20:14:06.000000Z handler_name : Core Media Audio vendor_id : [0][0][0][0] Stream #0:1[0x2](und): Video: mjpeg (Baseline) (jpeg / 0x6765706A), yuvj420p(pc, bt470bg/unknown/unknown), (...) -- MP4v2, MP4 Box, the files’ respective atom trees,, searching for “attached_pic”, the MP4 muxer movenc.c

4 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:51
  Extracting frames from videos using ffmpeg, unpredictable behaviour [closed] - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I am using this ffmpeg command to generate a bunch of images captures from a video: ffmpegCommand([ "-i", inputPath, "-vf", `select='not(mod(n,$frame_interval))',setpts='N/($fps*TB)'`, "-s", `320x200`, "-f", "image2", outputPath, ]); it is the most frame accurate method according to what I have researched on google and SO. this works well when the video is around 30 fps, with around 250 frame_interval. but when video is 5 fps, frame interval should obviously be lower, at around 70, because there (...)
• 16:38
  How to output fragmented mp4 with ffmpeg? - S B Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg -i infile.avi out.mp4 outputs non-fragmented MP4. How do I obtain fragmented mp4? Update A fragmented mp4 file is internally divided into several back-to-back chunks or MPEG-4 movie fragments. Each chunk has its own moof atom - so there are several moof atoms interleaved in the file instead of a single moov at the end as in the case of an unfragmented mp4. This makes it easier to stream over slow networks where buffering is involved There are several tools like mp4box that convert a normal mp4 to a fragmented one. Unfortunately we cannot use (...) -- mp4box
• 15:59
  PowerShell script to Embed Album art in MP3 files - issues with accelerated audio files in ffmpeg - moshe baruchi Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to embed album art into an MP3 file using a PowerShell script along with the TagLib library. The MP3 file has been speed-boosted using FFmpeg. When I run the script on regular audio files, it works fine, but with the accelerated audio files, the album art is only visible when I open the file in MP3Tag or in VLC. It's not showing up in Windows audio players and definitely not in File Explorer. PowerShell code param ( [string]$audio, [string]$picture ) Add-Type -Path "TagLib-Sharp.dll" $audioFilePath = $audio $albumArtPath = (...)

3 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:33
  understanding HEVC NAL SEI termination and byte alignment parsing with ffmpeg - rodeomacon Newest 'ffmpeg' Questions - Stack Overflow
  The NAL SEI timecode message I am currently writing to file is 00 00 01 4E 01 88 06 XX XX XX XX XX 10 80 (The termination portion being 10 80, payloadSize set to 0x06 and the XX bytes being an encoding of the frames/seconds/minutes/hours). My goal is to read the timecode with ffmpeg -i video.h265 -c:v copy -bsf:v trace_headers -f null - and ffprobe -show_frames video.mov with no errors. The 3 left most 0 bits of the final 0x10 byte are the conclusion of the time_offset_length (Equal to 0) data. Following this, I am intending to have a rbsp_stop_one_bit followed by four (...)
• 17:44
  Decoding HEVC with Alpha Channel via NVDEC: Monochrome (4:0:0) Workarounds? [closed] - Holy_diver Newest 'ffmpeg' Questions - Stack Overflow
  I’m working on decoding HEVC streams that include an alpha (transparency) channel using NVIDIA’s NVDEC. The alpha channel is encoded in monochrome (YUV 4:0:0), but NVDEC’s HEVC decoder appears to lack support for monochrome formats. How can I work around this limitation? Problem Details: HEVC Profile: Stream uses HEVC_Rext (Range Extensions) with a monochrome alpha layer (4:0:0 chroma subsampling). NVDEC Limitations: The SDK documentation states support for 4:0:0 (8-bit) only for specific codecs like JPEG, not HEVC. Attempting to decode returns (...)
• 22:02
  Rounded corners in subtitle (Advanced Substation Alpha [.ass]) - Leander Mihm Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to have rounded corners with the BorderStyle 4 in .ass (Advanced Substation Alpha)? I only found out that the BorderStyle 4 exists, because I was looking at this stackoverflow. Is there any good and complete documentation of the Advanced Substation Alpha format? I'm currently using the following configuration: BorderStyle=4 Outline=10 --
• 21:35
  FFmpeg matlab error: At least one output file must be specified? [closed] - as moh Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get I frames from a video using Matlab using this command system(sprintf('ffmpeg -i testVid.mp4 -vf "select=eq(pict_type\\,I)" -vsync vfr output_%03d.png')); ,but i get this message ffmpeg version 7.1-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers built with gcc 14.2.0 (Rev1, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma (...)
• 15:58
  How can I create a video from images using FFmpeg in different scenarios? - Meet Developer Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a video from images using FFmpeg in different scenarios, and my commands work on Windows but not in Android Studio. I am using this library in my Android project: implementation("com.arthenica:ffmpeg-kit-full:6.0-2") When I run the commands, I get this error in Logcat: [vost#0:0 ⓐ 0x73746c8800] Unknown encoder 'libx264'. Here are the commands I tried: When I have a list of images and a total duration, so each image's duration is automatically calculated based on the total duration. (For example, 3 images and a total (...)
• 04:56
  ffmpeg video recording hangs in Emacs - Nutritioustim Newest 'ffmpeg' Questions - Stack Overflow
  A. Using ffmpeg, both of these audio and video captures work correctly in a shell. # Audio ffmpeg -y -f avfoundation -t 5 -i :0 -c:a aac audio-recording.m4a # Video # i. video only # ii. audio & video ffmpeg -y -f avfoundation -framerate 30 -i 0 -t 10 -c:v libx264 -preset fast -pix_fmt yuv420p video-recording.mp4 ffmpeg -y -f avfoundation -framerate 30 -pixel_format "uyvy422" -i 0:0 -t 10 -c:v libx264 -preset fast -pix_fmt yuv420p audio-video-recording.mp4 B. In Emacs (29.4, "Emacs For Mac OS X"), this audio code block completes, and prints (...)

2 mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:32
  Why my ffmpeg command works only first several minutes? [closed] - О. Войтенко Newest 'ffmpeg' Questions - Stack Overflow
  I have my own ffmpeg exec command in the docker for writing rtsp stream by motion detection and make segments every 60 sec. But This command detect correctly only first 1-2 minutes, and without any errors ffmpeg does not detect motion. I'm using the latest version ffmpeg. docker run -d -v /etc/localtime:/etc/localtime:ro \\ -v /etc/timezone:/etc/timezone:ro \\ --tmpfs /tmpfs:rw,noexec,nosuid,size=100M,mode=1777 \\ -v /data/ARCHIVE:/ARCHIVE \\ -e ARCHIVE_PATH="/ARCHIVE/Cam1" \\ --restart=unless-stopped \\ -d --name rec-Cam1 \\ ffmpeg-recorder -loglevel debug (...)
• 01:03
  FFMPEG HLS stream for Android and IOS - Poda Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream to mobile devices with ffmpeg and apache2.2 but I haven't been successful. I used this command to create the segments and the playlist: ffmpeg -i http://x.x.x.x:8080 -codec:v libx264 -r 25 -pix_fmt yuv420p -profile:v baseline -level 3 -b:v 500k -s 640x480 -codec:a aac -strict experimental -ac 2 -b:a 128k -movflags faststart -flags -global_header -map 0 -f hls -hls_time 10 -hls_list_size 5 -hls_allow_cache 0 -sc_threshold 0 -hls_flags delete_segments -hls_segment_filename out%05d.ts list.m3u8 The source is a http stream which (...)

1er mars

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:08
  No udp being received on LAN after sending via ffmpeg [closed] - g00se Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream a webcam over my LAN with ffmpeg -s 640x480 -i /dev/video2 \\ -framerate 10 \\ -preset ultrafast -tune zerolatency codec libx264 \\ -f mpegts udp://192.168.1.237:8081 This is all fine when consumed with ffplay -fflags nobuffer -flags low_delay -framedrop udp://192.168.1.237:8081 on the same box, but when I try to run that same ffplay on another box on my LAN, then, nothing. Any ideas please? Also, the following as 'client' simply hangs: nc -u 192.168.1.237 8081 | (...)

28 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:09
  How to parallelize ffmpeg setPTS filter when using GPU? [closed] - Souvic Chakraborty Newest 'ffmpeg' Questions - Stack Overflow
  We have a long python code which chunks the video into multiple parts and changes the speed using setPTS filter. import ffmpeg ffmpeg.input(segment_path).filter("setpts", f"1/speed_factor*PTS").output( adjusted_segment_path,vcodec="h264_nvenc", acodec="aac",preset="fast", crf=23, g=30, keyint_min=30, sc_threshold=0,r=30,vsync='cfr',threads=1 ).global_args("-hwaccel", "cuda").run(quiet=True, overwrite_output=True,capture_stdout=True, capture_stderr=True) Now, because this happens multiple times before concatenation, we thought, instead of sequential (...)
• 21:34
  Can VLC's method for estimating the duration of a video be reproduced by the means of ffmpeg? - archie Newest 'ffmpeg' Questions - Stack Overflow
  This may seem to duplicate previous questions but it does not, as far as I can tell. I have a bash script for indexing images and videos to a thumbnails database. A user of my script complained that some videos of hers are skipped over with an error message "corrupted metadata" even though VLC can play them smoothly. These are about 10 videos out of some 15 thousand, but I'd like to solve the problem. I will focus on a single video from the bunch. File name: "Paper_and_discussion_M492.mkv", actual duration 02:03:47 (hh:mm:ss). The duration and bitrate fields in the video (...)
• 20:30
  Bash script to automate FFmpeg operations fails when calling the command, but copy-pasting the generated command into the terminal works [duplicate] - GaboScharff99 Newest 'ffmpeg' Questions - Stack Overflow
  I wrote a bash script which automates a number of conversion operations on video files using FFmpeg. Oddly enough, the FFmpeg call itself now fails when running the script, with a very confusing error message, I might add, but when I copy the command generated by the script into the terminal and run it, it works flawlessly. I'm sorry to insert such a long code block here, but considering how strange this error is, it might be anywhere in the script, so here it (...)
• 07:25
  HLS script has been lost to time, previous content was made in specific format, attempting to recreate using FFMPEG primitives - Wungo Newest 'ffmpeg' Questions - Stack Overflow
  Looking to add this video to a stitched playlist. The variants, encoding, and everything must match exactly. We have no access to how things were done previously, so I am literally vibing through this as best as I can. I recommend using a clip of buck bunny that's 30 seconds long, or the original buck bunny 1080p video. #!/bin/bash ffmpeg -i bbb_30s.mp4 -filter_complex " [0:v]split=7[v1][v2][v3][v4][v5][v6][v7]; [v1]scale=416:234[v1out]; [v2]scale=416:234[v2out]; [v3]scale=640:360[v3out]; [v4]scale=768:432[v4out]; [v5]scale=960:540[v5out]; [v6]scal

27 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:48
  How to use multiple map values in ffmpeg-python? - kamoloff Newest 'ffmpeg' Questions - Stack Overflow
  How can I use multiple map values for different resolutions in ffmpeg-python? -map [v1out] -c:v:0 libx264 -b:v:0 1900k -bufsize 3800k \\ -map [v2out] -c:v:1 libx264 -b:v:0 900k -bufsize 1800k \\
• 15:02
  I can't understand how to use ffmpeg in javascript (if it's even possible) - Laimonas Rupeika Newest 'ffmpeg' Questions - Stack Overflow
  Straight to the problem, I want to use ffmpeg in my javascript project for video editing. So I found cdn: which references to "https://github.com/Kagami/ffmpeg.js", which is ffmpeg port to javascript as I understand? I don't get any errors on import, but if I try loading ffmpeg: // Initialize FFmpeg after the GAPI client is loaded const ffmpeg = createFFmpeg( log: true ); // // Load the FFmpeg library await ffmpeg.load(); I get error: Uncaught (in promise) ReferenceError: createFFmpeg is not defined at initializeGapiClient (index:89:18) and it (...)
• 07:32
  Use FFmpeg concat two video, is output video level mistake? - 哇哈哈 Newest 'ffmpeg' Questions - Stack Overflow
  video1 "index": 0, "codec_name": "hevc", "codec_long_name": "H.265 / HEVC (High Efficiency Video Coding)", "profile": "Main", "codec_type": "video", "codec_tag_string": "hev1", "codec_tag": "0x31766568", "width": 1920, "height": 1080, "coded_width": 1920, "coded_height": 1080, "has_b_frames": 2, "sample_aspect_ratio": "1:1", "display_aspect_ratio": "16:9", "pix_fmt": "yuv420p", "level": 120, "color_range": "tv", "chroma_location": "left", "field_order": "progressive", "refs": 1,  (...)

26 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:45
  Does ffmpeg violate the SAT>IP specification (DESCRIBE syntax)? [closed] - Eric Woltermann Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to play a SAT>IP stream using ffmpeg -i rtsp://sat.ip/?src=1&freq=11493&pol=h&sr=22000&msys=dvbs&pids=0,5100,5101,5101,8191, which returns method DESCRIBE failed: 404 Not Found. For reference, VLC plays the stream just fine. When tcpflowing the ffmpeg traffic, I get the following: 192.168.002.104.34018-192.168.002.222.00554: OPTIONS rtsp://sat.ip:554/?src=1&freq=11493&pol=h&sr=22000&msys=dvbs&pids=0,5100,5101,5101,8191 RTSP/1.0 CSeq: 1 User-Agent: (...) -- http://www.satip.info/sites/satip/files/resource/satip_specification_version_1_2_2.pdf
• 14:01
  How to encode jpeg images to H264 very fast (transform images to video) - Paul Newest 'ffmpeg' Questions - Stack Overflow
  I have 30 JPEG images (.jpg) at a resolution of 480 x 640. Each image takes aboout 20KB (all of them takes about 600KB). I am using FFmpeg command to encode these images into a video in H264 format. I need this to be done very fast - about 1 second. Using the classic command: ffmpeg -y -f image2 -r 1/5 -i image_%d.jpg -c:v libx264 -r 30 video.mp4 takes about 90 seconds. After adding -preset ultrafast: ffmpeg -y -f image2 -r 1/5 -i image_%d.jpg -c:v libx264 -preset ultrafast -r 30 video.mp4 the (...)
• 12:05
  FFMpeg Coding in C: Encoder returns EOF at first interaction. Encoder not opened correctly? [closed] - Davidhohey Newest 'ffmpeg' Questions - Stack Overflow
  as I'm fairly new to FFMpeg Programming and C in general, the code looks like a mess. I have smashed my head against a wall trying to get this code to work for about a week. int decode_encode_pipeline(AVFormatContext *Input_Format_Context, AVFormatContext *Output_Format_Context, int *streams_list) const AVCodec *DECodec, *ENCodec; AVCodecContext *DECodecContext = NULL, *ENCodecContext = NULL; AVCodecParameters *CodecParameters = NULL; AVDictionary *opts = NULL; AVPacket *Packet; AVFrame *Frame; int check; Packet = (...)
• 05:55
  FFmpeg WASM writeFile Stalls and Doesn't Complete in React App with Ant Design - raiyan khan Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFmpeg WebAssembly (WASM) in a React app to process and convert a video file before uploading it. The goal is to resize the video to 720p using FFmpeg before sending it to the backend. Problem: Everything works up to fetching the file and confirming it's loaded into memory, but FFmpeg hangs at ffmpeg.writeFile() and does not proceed further. No errors are thrown. Code Snippet: Loading FFmpeg const loadFFmpeg = async () => if (loaded) return; // Avoid reloading if already loaded const baseURL = (...)
• 03:19
  ffmpeg fails on conversion from .mov to .mp4 fails aT 98% - user2241249 Newest 'ffmpeg' Questions - Stack Overflow
  Our code is below. When converting a uploaded .mov to .mp4 the conversion halts at 98%. Almost all of our other preferred formats encode flawlessly. Anyone has any clue on where we went wrong? We are struggling on this for a while now so we want to ask the experts, thanks in advance for any help. <?php $Path = dirname(__FILE__) . "/"; $url = "http://" . $_SERVER['SERVER_NAME'] . str_replace('\\\\', '/', dirname($_SERVER['SCRIPT_NAME'])) . "/"; session_start(); include_once (...)

25 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:00
  Create Android application which to convert RTSP url into Srt url and play streaming using exoplayer or ffplay [closed] - Anuj Vaish Newest 'ffmpeg' Questions - Stack Overflow
  Create Android application which to convert RTSP url into Srt url and play streaming using exoplayer or ffplay: Step 1: (it's done) Docker convert mp4 file to RTSP URL (rtsp://10.10.15.25:8554/mystream)and verify in ffplay "ffplay -rtsp_transport tcp rtsp://10.10.15.24:8554/mystream" Step 2: RTSP URL run on Exoplayer (it's done) Pending: Step 3: RTSP Url conversion SRT URL (srt://live.cloudflare.com:778?passphrase=&streamid=) it's playback: srt://live.cloudflare.com:778?passphrase=&streamid=play Step 4: Play SRT URL in Exoplayer or (...)
• 21:02
  while build a demo about ffmpeg , it occurs : undefined reference to `av_register_all' - Cody Newest 'ffmpeg' Questions - Stack Overflow
  This problem has bothered me for days. After I compile and install FFmpeg, I try to build a demo using it, but it always fails. The demo is: #include "libavcodec/avcodec.h" #include "libavformat/avformat.h" int main(int argc,char *argv[]) av_register_all(); return 1; With gcc main.c -o main.o, an error occurs: undefined reference to 'av_register_all' Building with: gcc main.c -o main.o -lm -ld -lz -lavcodec -lavformat -lavutil, another error occurs: /usr/bin/ld: cannot find -ld How can I resolve (...)
• 17:18
  Animated watermark moving on the edges of the movie - ffmpeg - saeid ezzati Newest 'ffmpeg' Questions - Stack Overflow
  I wanna overlay a picture on a video, as a watermark. How do I insert an animated watermark that randomly moves from side to side. For example, A watermark, placed on top/ upper-left corner, moves randomly to the top/upper-right corner and freezes there for five seconds before moving down to the lower- right corner. I don't want the watermark to have a cross movement and move from the upper-right corner to the lower-left corner. Here is an example of my code, using which the watermark randomly jumps to a corner each 200 frames without (...)
• 16:40
  Libav linking error: undefined references - Fedech Newest 'ffmpeg' Questions - Stack Overflow
  Here's my problem: I built ffmpeg from source (version 1.2), the libav* libraries are in /usr/local/lib and they're static I'm compiling a ns3 (www.nsnam.org) module, so my only control over the linker is through the env variable LINKFLAGS In the source the headers are in a "extern C" block, so it's not the usual g++ name mangling I set LINKFLAGS="-I/usr/local/include/libavformat -I/usr/local/include/libavcodec -I/usr/local/include/libavutil -L/usr/local/lib -lavformat -lavcodec -lavutil", and the linker can't seem to find any (...)
• 15:08
  PHP convert any video to MP4 using ffmpeg - Dilak Newest 'ffmpeg' Questions - Stack Overflow
  I have a website in which I allow users to upload videos. But with the HTML5 tag video, only MP4 videos are allowed So, I want to convert any type of videos that the users upload to MP4 and then add the path in my database. I tried something, changing the file extension to MP4 but it didn't work. I've read something about ffmepg but I can't figure out how to use it. Here is my PHP script where I change the file extension and then add the path in my data base, please how can I convert the video correctly, what should I add/change? <?php  (...)
• 02:34
  How do I record a Selenium Grid Session (Via VNC, Remote Frame Buffer - RFB) to an H264 encoded MP4 [closed] - Frobbit Newest 'ffmpeg' Questions - Stack Overflow
  When my integration tests fail, I want to be able to watch the video of the test running. I test a full stack app with docker-compose and I use the single container Selenium-grid. If I save every Secenerio to a file, I can quickly review a failed test. I'm trying to record a Selenium Grid session and save it as an MP4 file using GStreamer and VNC. I need a solution that captures the VNC session running in the Selenium Grid container and writes the output to an H264 encoded mp4 file. Here's the context: I'm using Selenium Grid with a VNC server running in the (...)

24 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:48
  Ducking music using FFmpeg - angel_30 Newest 'ffmpeg' Questions - Stack Overflow
  I want to duck a music audio with a speech audio using FFmpeg (ducking is commonly used to lower background music anytime a person speaks, then raises it when that person finishes speaking). How can I do it with FFmpeg or any other tools (if any)? There was an FFmpeg filter called sidechaincompress which merges the two, but it doesn't "duck" them. It takes 2 audio inputs, 1st input to be compressed depending on the signal of 2nd input and later compressed signal to be merged with 2nd input: ffmpeg -i main.flac -i sidechain.flac -filter_complex (...)

23 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:04
  Encoding problem with x264 and not divisible by 4 resolutions - Valentin Maschenko Newest 'ffmpeg' Questions - Stack Overflow
  I'm encoding frames using H264 from BRGA to Yuv420p with high preset. It works fine with most resolutions, but images on 1366x768 are heavily distorted. So far, I've found that if width or height is not divisible by 4, there can be issues like this. Do you know how I can fix that? Code: stride = this.width * 4; encoder = new CodecContext(Codec.FindEncoderById(AVCodecID.H264)) Width = this.width, Height = this.height, Framerate = new AVRational(1, framerate), TimeBase = new AVRational(1, framerate), PixelFormat = (...) --
• 13:37
  Display stream with FFmpeg, python and opencv - Ηλίας Κωνσταντινίδης Newest 'ffmpeg' Questions - Stack Overflow
  Situation : I have a basler camera connected to a raspberry pi, and I am trying to livestream it's feed with FFmpg to a tcp port in my windows PC in order to monitor whats happening in front of the camera. Things that work : I manage to set up a python script on the raspberry pi which is responsible for recording the frames, feed them to a pipe and streaming them to a tcp port. From that port, I am able to display the stream using FFplay. My problem : FFplay is great for testing out quickly and easily if the direction you are heading is correct, but I want to (...)

22 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:16
  How to fix fps (stream? container? - wrong value) in mov file - using ffmpeg [closed] - rgr Newest 'ffmpeg' Questions - Stack Overflow
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mov': Metadata: major_brand : qt minor_version : 512 compatible_brands: qt encoder : Lavf61.9.106 Duration: 00:02:29.98, start: 0.000000, bitrate: 2622795 kb/s Stream #0:0[0x1]: Video: prores (HQ) (apch / 0x68637061), yuv422p10le(progressive), 3840x2160, 2622789 kb/s, 59.95 fps, 59.94 tbr, 60k tbn (default) --------- Metadata: handler_name : VideoHandler vendor_id : FFMP encoder : Lavc60.37.100 prores_ks How can I fix this value (59.95 fps) in a mov file? (...)

21 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:35
  FFMPEG says MP3 file is longer than it actually is [closed] - badr2001 Newest 'ffmpeg' Questions - Stack Overflow
  I have a mp3 file which is 01:04:09 seconds long. When I use the following commmand: ffmpeg -i TestAudio_123.mp3 -ss 60 -to 120 -c:a libmp3lame -q:a 2 output.mp3 I get this output in the console: Input #0, mp3, from 'TestAudio_123.mp3': Metadata: major_brand : M4A minor_version : 0 compatible_brands: M4A isommp42 voice-memo-uuid : 07BF4A32-29E8-4A28-89D5-B6676F9CB945 title : تسجيل جديد ٣٨ encoder : Lavf61.1.100 Duration: 01:07:22.01, start: 0.023021, bitrate: 32 kb/s Stream #0:0: Audio: mp3 (mp3float), 48000 Hz, mono, fltp, 32 (...) --
• 10:08
  Matplotlib saved animation has compression artifacts after ffmpeg update [closed] - DIgg Newest 'ffmpeg' Questions - Stack Overflow
  I am using matplotlib.animation.FuncAnimation.save to produce .mp4 animation files. I have recently updated the ffmpeg package, but now it causes ugly compression artifacts to appear in the generated videos. I have solved my issue by rolling back to the old version of the ffmpeg package, but maybe someone can suggest a proper solution or advise me where to report this issue. ffmpeg 6.1.1 produces videos with the artifacts. ffmpeg 4.2.2 produces videos without the artifacts. I am using matplotlib 3.10.0, numpy 2.1.3, python (...)
• 22:02
  Twilio Real-Time Media Streaming to WebSocket Receives Only Noise Instead of Speech - dannym25 Newest 'ffmpeg' Questions - Stack Overflow
  I'm setting up a Twilio Voice call with real-time media streaming to a WebSocket server for speech-to-text processing using Google Cloud Speech-to-Text. The connection is established successfully, and I receive a continuous stream of audio data from Twilio. However, when I play back the received audio, all I hear is a rapid clicking/jackhammering noise instead of the actual speech spoken during the call. Setup: Twilio sends inbound audio to my WebSocket server. WebSocket receives and saves the raw mulaw-encoded audio data from Twilio. The audio is processed via (...)
• 21:06
  Is there a way to pipe the stdio stream with the output segment ts files during m3u8 from mp4 conversion in ffmpeg with nodes spawn function? - Jacob L Newest 'ffmpeg' Questions - Stack Overflow
  I am writing an automated pipeline in Node-JS that takes an MP4 file, compresses it, then returns the buffer of the compressed file, feeds it into another FFmpeg command, which then converts the mp4 to .m3u8 for HLS. The problem I’m having is that I am not able to pipe the segment file data stream to automatically upload each .ts file to the cloud versus having them stored to the disk (which is not an option because this is a cloud function). I either have to opt in to them being created in memory in the directory, which then my manifest file is based off of, or I create one (...)
• 12:08
  FFmpeg | Option loop not found - Praveen Tamil Newest 'ffmpeg' Questions - Stack Overflow
  The loop option is not working with gif image. When I'm working with png image the code good. But when I'm working with animated gif image the error is thrown Option loop not found. In my example I'm trying to create the video from input image with specific duration. ffmpeg -loop 1 -t 5 -i 15324210315b56e3a78abe5.png -i watermark.png -filter_complex "[0]scale=trunc(iw/2)*2:trunc(ih/2)*2[v];[v][1]overlay=x=(W-w-10):y=(H-h-10)" output.mp4 Below command is not working ffmpeg -loop 1 -t 5 -i 15323488345b55c9a2b2908.gif -i (...)
• 10:43
  Optimally using hevc_videotoolbox and ffmpeg on OSX - Brajesh Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg 4.3.1 to convert videos from h264 to h265 and initially I was excited to discover that I can use my Mac's GPU to speed up the conversion with the flag hevc_videotoolbox. My Mac hardware is the 10th generation Intel i5 with AMD Radeon Pro 5300 I'm using this command: ffmpeg -i input_h264.mp4 -c:v hevc_videotoolbox -b:v 6000K -c:a copy -crf 19 -preset veryslow output_h265.mp4 The conversion speeds increased from 0.75x to 4x, almost a 500% improvement ! But then I noticed large filesizes and slightly fuzzy results. Then I noticed (...)
• 10:12
  av_guess_format return null - Iva Newest 'ffmpeg' Questions - Stack Overflow
  I used example from http://cekirdek.pardus.org.tr/~ismail/ffmpeg-docs/output-example_8c-source.html : out_ctx = avformat_alloc_context(); out_ctx->oformat = av_guess_format(NULL, filename, NULL); if (out_ctx->oformat == NULL) out_ctx->oformat = av_guess_format("mpeg4", NULL, NULL); if (out_ctx->oformat == NULL) LOGI(1, "Could not guess output format\\n"); exit(1); av_guess_format always return null. I don't understand what I must re-configured in FFMPEG for enable any (...) -- http://cekirdek.pardus.org.tr/~ismail/ffmpeg-docs/output-example_8c-source.html
• 09:25
  MP4 cut with ffmpeg doesn't play nicely in VLC but does in Browser - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I cut a video with ffmpeg: ffmpeg -ss 2 -to 10 -i src.mp4 -c copy out.mp4 But the playback in VLC is choppy for the first few seconds. Strangely it does play in my browser fine. I saw this post: https://superuser.com/questions/1167958/video-cut-with-missing-frames-in-ffmpeg?newreg=1502e1698e0344acb214aa8d7e6048bd where the suggestion is to use -avoid_negative_ts make_zero. That does fix the playback in VLC. I think that shifts the whole stream, and results in the video being longer than I want it to be. For my use case I need the video to be precisely the (...)
• 01:07
  ffmpeg - How to combine overlapping clips from single video? - anon Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use ffmpeg to take a few clips from a video and combine them together, similar to this: Cut multiple parts of a video with ffmpeg Except that the clips come from timestamps that overlap. My command looks like this: "C:\\Program Files\\ffmpeg\\bin\\ffmpeg.exe" -y -i "C:\\temp\\5min.mp4" ^ -vf "select='between(t,4,6.5)+between(t,5,6)', setpts=N/FRAME_RATE/TB" ^ -af "aselect='between(t,4,6.5)+between(t,5,6)', asetpts=N/SR/TB" "C:\\temp\\5min-clip.mp4" The video that I get only contains the first clip. I am on the latest (...)

20 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 13:25
  ffmpeg throws error "Invalid file index 1 in filtergraph description" when used with concat and -/filter_complex [closed] - Ernst V Newest 'ffmpeg' Questions - Stack Overflow
  I want to create mp4 videos from many small .jpg files (time-lapse). Each image is shown for 2 seconds and then fades to the next. This works fine when I issue the command with a few images (see below). But when the number of images reaches hundreds or thousands, I can no longer put them into a single command, but have to put the filenames and the complex filter into .txt files. Whatever I try, I always get the error "Invalid file index 1 in filtergraph description". This works fine: ffmpeg -loop 1 -i "image1.jpg" -loop 1 -i "image2.jpg" -loop 1 -i "image3.jpg" -loop 1 -i (...)

19 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:44
  FFmpeg streaming stuck few minutes after start [closed] - josue ramirez Newest 'ffmpeg' Questions - Stack Overflow
  Sorry for my english! :D I'm trying to make a live video stream from my webcam with ffmpeg using Node. I get the images or frames from ffmpeg via pipe1 on the stdout event and send them via a socket-io client to my angular app to play the stream. So far the stream starts fine and my angular app can play it fine, but after a certain time (8 minutes or so) ffmpeg stops sending data and the stream in my angular app stops and if I want to start the webcam again it's not possible anymore because it's apparently occupied by another process. I've been trying to (...)
• 19:22
  How to watermark with overlay fadeout with ffmpeg [closed] - Kevin Waterson Newest 'ffmpeg' Questions - Stack Overflow
  I wish to put a watermark on my video, and a text overlay. The text overlay should fade out after the first three seconds. The watermark is permanent. This is what I have come up with, however, the watermark seems to push the overlay down. ffmpeg -y -i in.mp4 -i images/watermark.png -filter_complex "[0:v][1:v]overlay=10:10[bg];[bg]drawtext=fontfile=fonts/SAMAN___.ttf:text='Testing':box=1:boxborderw=800|800:boxcolor=black:fontsize=40:fontcolor=white:alpha='if(lt(t,2),0,if(lt(t,3),(t-2)/1,if(lt(t,6),1,if(lt(t,7),(1-(t-6))/1,0))))':x=(w-text_w)/2:y=(h-text_h)
• 19:50
  FFmpeg: high quality animated GIF? - David Hope Newest 'ffmpeg' Questions - Stack Overflow
  I'm generating animated a GIF from a video on my server. The generated GIF is not really high quality and it looks like the pixels are huge. Example: This is how I generate the GIF: shell_exec("/usr/bin/ffmpeg -i video.mkv -vf scale=500:-1 -t 10 -r 10 image.gif"); I did a search on Google and came across this: shell_exec("/usr/bin/ffmpeg -i video.mkv -r 20 -f image2pipe -vcodec ppm - | convert -delay 5 - output.gif"); But the command above doesn't do anything and no output.gif is being (...) --
• 14:02
  Download HLS ( HTTP ) Stream video using python - LeDerp Newest 'ffmpeg' Questions - Stack Overflow
  I need to download a streaming video(from a URL) using python the command line argument would be: ffmpeg -i URL stream.mp4 I know I can use the subprocess command subprocess.call('ffmpeg -i '+ URL +' stream.mp4', shell=True) Is there any alternative like a API that I can use instead of using subprocess command
• 13:41
  How to split an audio / video file based upon multiple timestamps by using FFMPEG (preferably) - badr2001 Newest 'ffmpeg' Questions - Stack Overflow
  I would like to be able to split my audio (mp3 or equiv.) or video file based upon multiple timestamps. The same way, for those who have used any editing software, you can crop the file based upon selecting a start time and end time. What I have done so far: [HttpPost] public async Task ProcessFullAudio([FromBody] ProcessFullAudioRequest processFullAudioRequest) if (processFullAudioRequest == null || processFullAudioRequest.StartEndTimes == null || processFullAudioRequest.StartEndTimes.Length == 0) throw new ArgumentException("Invalid request: (...)
• 11:29
  Extract undecoded audio payload from song file? - Gabriel Newest 'ffmpeg' Questions - Stack Overflow
  What tools are available to extract the raw undecoded audio payload from a song file? I am looking for a solution that will work on wma, m4a, mp3, and ogg files. One of the purposes is to be able to calculate the md5sum of the audio payload. I tried ffmpeg -i -f md5 - but this actually does a decoding pass which is not desired. Also this seems to produce different results depending on the versions of the decoders in use. I tried ffmpeg -i -acodec copy - > but ffmpeg complains that it does not know the desired output format even though copy is (...) -- documentation
• 11:28
  How can i create a stable checksum of a media file? - yawniek Newest 'ffmpeg' Questions - Stack Overflow
  how can i create a checksum of only the media data without the metadata to get a stable identification for a media file. preferably an cross platform approach with a library that has support for many formats. e.g. vlc, ffmpeg or mplayer. (media files should be audio and video in common formats, images would be nice to have too)
• 03:11
  How can a desktop node.js app play audio that may be controlled by the user like a media player? [closed] - eedefeed Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a playlist manager that plays music. How can Node.JS play audio files quickly, reliably and with all the basic level features you would expect from a media player, namely: play pause seek stop adjust volume I'm targetting windows/linux, but a Windows-only solution but be okay (for now.) I have tried a number of libraries and methods to play audio but it seems none of them are good enough: Audic: it's reasonably good, but buggy. The play and pause functions sometimes get switched around. I also recall that there (...) -- Speaker, fluent-FFmpeg, fluent-FFmpeg-util, Node Vlc, VLC Client, sound play
• 01:41
  How to Identify the Version of ffmpeg.dll in WebView2 Runtime Fixed Version - Po-Sen Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using the WebView2 runtime fixed version. After expanding the package, I found multiple DLL files, including ffmpeg.dll. In the file properties, the file version is displayed as 0.0.0.0, and the only version-related information I can see is the product version: git-2024-04-25-e3581fa2dd. This format is different from the numeric versioning scheme I see on the official FFmpeg website: https://ffmpeg.org/download.html#releases. I want to trace the exact FFmpeg version used in this WebView2 distribution. Initially, I assumed e3581fa2dd was a Git (...) -- , https://ffmpeg.org/download.html#releases, , https://git.ffmpeg.org/ffmpeg.git

18 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:34
  Run docker container with FFMPEG rstp stream on websockets - bmvr Newest 'ffmpeg' Questions - Stack Overflow
  I have create a node js application that uses ffmpeg with spawn node library. Here's the backend sample: const startStreamWs = (cameraId, rtsp_url) => console.log(`Starting stream for camera: $cameraId`); const ffmpeg = spawn("ffmpeg", [ "-rtsp_transport", "tcp", // Use TCP for reliable streaming "-i", rtsp_url, "-analyzeduration", "5000000", // Increase analyzeduration "-probesize", "5000000", // Increase probesize "-fflags", "nobuffer", // Reduce buffering "-flags", "low_delay", // Low latency "-strict", (...)
• 14:06
  When decoding video with ffmpeg and playing the decoded audio data with SDL2, it's all noise [closed] - jodan feng Newest 'ffmpeg' Questions - Stack Overflow
  it is the code in the main thread int main(int argc, char *argv[]) QApplication a(argc, argv); Ffplay f; f.start(); return a.exec(); Ffplay is the thread that decode the video and play it class Ffplay : public QThread Q_OBJECT public: Ffplay(); protected: void run() override; public: AVFormatContext* format2; Thread2 t2; ; Ffplay::Ffplay() void Ffplay::run() format2=avformat_alloc_context();  (...)
• 02:34
  How to hide console output of FFmpeg in Python? - Shiven Saini Newest 'ffmpeg' Questions - Stack Overflow
  I was working on a YouTube video downloader Python program. I want to encode downloaded data to other media formats for this job i used FFmpeg and FFmpeg-Python (Package to use FFmpeg in Python). Everything is Fine but i want to ask that how can i disable FFmpeg Output on the console ? Here is some Pic of my Program :- But this console often appears when my program starts encoding, suppressing the main GUI :- If you know any solution for my problem then please give me some solution. It is my first time that i am trying Stackoverflow for my (...) -- ,

17 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 19:49
  macos - Batch create 'samples' with multiple cuts from videos [closed] - Thiago Newest 'ffmpeg' Questions - Stack Overflow
  I'm on macOS, and have ffmpeg and python installed through homebrew. Bash solutions are also welcome - though I have no experience with bash I have folders with many videos, most (if not all) in either mp4 or mkv. I want to generate quick samples for each video, and each sample should have multiples slices/cuts from the original video. I don't care if the resulting encode, resolution and bitrate are the same as the original, or if it's fixed for example: mp4 at 720. Whatever is easier to write on the script or faster do execute. Example result: folder has 10 (...) -- https://youtu.be/FZC3aIvugpI
• 15:35
  Cloud Functions for Firebase: completing long processes without touching maximum timeout - Scott Ewing Newest 'ffmpeg' Questions - Stack Overflow
  I have to transcode videos from webm to mp4 when they're uploaded to firebase storage. I have a code demo here that works, but if the uploaded video is too large, firebase functions will time out on me before the conversion is finished. I know it's possible to increase the timeout limit for the function, but that seems messy, since I can't ever confirm the process will take less time than the timeout limit. Is there some way to stop firebase from timing out without just increasing the maximum timeout limit? If not, is there a way to complete time (...) -- I have a code demo here that works, seen here
• 07:33
  FFMPEG Audio Not Working Using VideoShow Package - dev.skas Newest 'ffmpeg' Questions - Stack Overflow
  I am creating a Node.js app that make video. I am facing some audio issue for each image, but my background sound is working async function generateVideo() const images = []; for (let i = 0; i < conversation.length; i++) images.push( path: `assets/image/conversation$i.png`, duration: 5, caption: questions[i].question, audio: `assets/audio/conversation$i.mp3`, ); // Show question for 5 sec images.push( path: `assets/image/reply$i.png`, duration: 5, audio: `assets/audio/reply$i.mp3`, ); (...)
• 04:39
  ffmpeg unable to get duration/bitrate of remote gif - Peter Xia Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get the duration of a gif. The command ffmpeg -i https://cdn.7tv.app/emote/01F6MZGCNG000255K4X1K7NTHR/4x.gif gives Duration: N/A, start: 0.000000, bitrate: N/A However if i download the file and pass it in ffmpeg -i 4x.gif it gives: Duration: 00:00:07.92, start: 0.000000, bitrate: 1225 kb/s The issue seems limited only to gifs on 7tv site. It works for other sites. (example: ffmpeg -i https://c.tenor.com/ULCY5B996-oAAAAd/tenor.gif). It also works for other encodings of that image (exmaple ffmpeg -i (...)

16 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:19
  ffmpeg exit code 429496724 when opening file with in name - Holly Wilson Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to write a program that will read the names of files in a directory, and parse them for info which it will then write into that file's metadata (seems pointless, I know, but it's more of a trial run for a larger project. If I can figure this out, then I'll be ready to move on to what I actually want to do). All of my filenames are formatted: Title, Article* - Subtitle* Cut* [Year] *if present The four test videos I'm using are titled: Test Video 1 [2000] Test Video 2, A [2000] Test Video 3 Test Cut [2000] Test Video (...)
• 17:40
  How to fix the ffmpeg python issue "Error applying option 'original_size' to filter 'ass': Invalid argument"? - Gauthier Buttez Newest 'ffmpeg' Questions - Stack Overflow
  ENVIRONMENT: Python 3.10 Windows 11 ffmpeg-python==0.2.0 CONTEXT: I am trying to add hardcoded subtitles on a video with ffmpeg and Pyton. PROBLEM: ffmpeg is not able to find the path of my ass subtitle file. So I tried different ways with different methods. I asked different AI to try to find a solution. Impossible! It is such a crazy issue that I tested the code from a "test" folder located on the root "C:" from the command line wid nows. No AI was able to fixed this issue. I tried chatGPT, deepseek, claude.ai. They proposed different solutions which (...) -- https://github.com/gauthierbuttez/public/blob/master/output_ffmpeg.log, https://github.com/gauthierbuttez/public/blob/master/test.zip
• 19:00
  How to seamlessly concatenate multiple Opus files together without popping sound? - Gurdie Derilus Newest 'ffmpeg' Questions - Stack Overflow
  I have a large PCM file that I've split into N chunks (N being the # of threads), and I encode them in parallel into Opus files with FFmpeg. Note: All PCM files are 16-bit Little Endian, 2 channels, 48000 sample rate. I then concatenate the Opus files using FFmpeg's demuxer, but I can hear an audible pop sound between each segment. Opening this sample file in Audacity reveals the issue: Notice the introduced pops in opus I created a simple and short Golang project on Github with a sample PCM file for easy testing. Note, not production code, so obviously (...) -- sample file, Notice the introduced pops in opus, Golang project on Github, Concatted Opus files vs Separate Opus files
• 10:03
  Split a video with ffmpeg, without reencoding, at timestamps given in a txt file - Basj Newest 'ffmpeg' Questions - Stack Overflow
  Let's say we have a video input.mp4, and a file split.csv containing: start;end;name 00:00:27.132;00:07:42.422;"Part A.mp4" 00:07:48.400;00:17:17.921;"Part B.mp4" (or I could format the text file in any other format, but the timestamps must be hh:mm:ss.ddd) How to split the MP4 into different parts with the given start / end timestamps, and the given filename for each part? Is it possible directly with ffmpeg, and if not with a Python (...)
• 08:51
  Python ffmpeg won't accept path, why? - Messaoud dhia Newest 'ffmpeg' Questions - Stack Overflow
  everytime i launch the code and set the correct path it gives me this error, I tried including ffmpeg path, uninstalling and installing the library back but no luck. I've also tried using diffrent ways to set the path like putting it directly without saving it to a variable, this is getting me crazy please help me with a solution . Code from pytube import * import ffmpeg global str userurl = (input("Enter a youtube video URL : ")) q = str(input("Which quality you want ? 360p,480p,720p,1080p,4K,Flh :")).lower() yt = (...)

15 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 07:29
  Convert 720p Mp4 to 480p with php ffmpeg - Parm Dhillon Newest 'ffmpeg' Questions - Stack Overflow
  I need to covert 720p or 1080p video to 480p mp4 video , i found below code ffmpeg -i input -vf scale=-1:480 -vcodec mpeg4 -qscale 3 output.mp4 and please help me , i am unable to give it INPUT VIDEO ex. $video='/path/to/mp4/video'; exec('ffmpeg -i $video -vf scale=-1:480 -vcodec mpeg4 -qscale 3 output.mp4'); why above code is not working
• 04:21
  How to merge segmented webvtt subtitle files and output a single file? - Dobbelina Newest 'ffmpeg' Questions - Stack Overflow
  How to merge a segmented webvtt subtitle file and output a single file?, m3u8 looks like this example: #EXTM3U #EXT-X-VERSION:4 #EXT-X-PLAYLIST-TYPE:VOD #EXT-X-MEDIA-SEQUENCE:1 #EXT-X-INDEPENDENT-SEGMENTS #EXT-X-TARGETDURATION:4 #USP-X-TIMESTAMP-MAP:MPEGTS=900000,LOCAL=1970-01-01T00:00:00Z #EXTINF:4, no desc 0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-1.webvtt #EXTINF:4, no desc 0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-2.webvtt #EXTINF:4, no (...) -- https://cmoreseusphlsvod60.akamaized.net/vod/bea44/0ghzi1b2cz5(11792107_ISMUSP).ism/0ghzi1b2cz5(11792107_ISMUSP)-textstream_swe=2000-15.webvtt

14 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 03:51
  Using swr_convert to resample audio frames resulted in audio with significant noise [closed] - Bruce Hu Newest 'ffmpeg' Questions - Stack Overflow
  I attempted to use swr_convert to resample audio frames from 44100 Hz to 16000 Hz, processing the frames one by one for testing purposes. However, the resulting audio appears to be mixed with noise. The following code shows how I resample a single audio frame: AVFrame* output_frame = av_frame_alloc(); if (!output_frame) throw std::runtime_error("Failed to allocate output AVFrame"); AVRational output_time_base = 1, output_sample_rate; SwrContext* swr_ctx = swr_alloc(); if (!swr_ctx) av_frame_free(&output_frame); throw (...)
• 21:37
  ffmpeg: how to prevent wait in case of error - xrfang Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to add watermark to images/videos, using the following command line: ffmpeg -y -f mjpeg -i input -i /tmp/watermark.png -filter_complex "..." -f mjpeg output The problem is, in case the input file is not a jpeg file, the process will HANG instead of quit with an error: Press [q] to stop, [?] for help [mjpeg ⓐ 0x126dc60] dqt: len 28602 is too large Error while decoding stream #0:0: Invalid data found when processing input frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A In my situation, the file has no (...)
• 16:28
  How to extract the 1st frame and restore as an image with ffmpeg? [closed] - lex Newest 'ffmpeg' Questions - Stack Overflow
  Anyone knows the trick? And how to install ffmpeg ? yum install mpeg only returns this: ======================================================================================== Matched: mpeg ======================================================================================== libiec61883.i386 : Streaming library for IEEE1394 libiec61883.x86_64 : Streaming library for IEEE1394 qffmpeg-devel.i386 : Development package for qffmpeg qffmpeg-devel.x86_64 : Development package for qffmpeg qffmpeg-libs.i386 : Libraries for qffmpeg qffmpeg-libs.x86_64 (...)
• 00:00
  What tool can I use to analyze audio and clip webm files? [closed] - Phillip Feldman Newest 'ffmpeg' Questions - Stack Overflow
  I have a bunch of 2-3 hour long podcast webms from Youtube. I want to extract the audio from them, and programmatically analyze things like volume, or who's speaking. I then want to use my analysis to clip the original webms. What tools can I use to do this, and is size of the audio files something that I need to consider? I know python and have used ffmpeg.
• 19:03
  I am trying to append the video segments to an existing video segment file, so that multiple videos can be streamed at once. How to achieve it? - Prafulla Nayak Newest 'ffmpeg' Questions - Stack Overflow
  Here is what I do: Fetch the existing m3u8 file Generate the segments to the new video file. fetch old segments from the m3u8 file and combine the new segments details. and then add it in between under "mergedSegments" as mentioned below. #EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:10 #EXT-X-MEDIA-SEQUENCE:$newMediaSequence #EXT-X-PLAYLIST-TYPE:VOD $mergedSegments #EXT-X-ENDLIST While doing so, everything works fine. But when I play it, The 1st video gets played without skipping any segments. But (...)

13 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:00
  ffmpeg mp4 to hls transcode fails on Azure Windows Server Image [closed] - James Weatherhead Newest 'ffmpeg' Questions - Stack Overflow
  I am having an issue with transcoding an mp4 (any mp4) to hls. If I run the command below on my Windows 11 machine it works fine. If I run it on a clean Windows 11 VM, it works fine. If I run it on a clean Windows 2022 Server VM it works fine. If I create a Windows 2022 server image in Azure and run it... it fails (see error below) I feel like something that FFMPEG needs is missing from the default server image in Azure. Has anyone experienced this issue and found a way to solve it? The command I am using: ffmpeg.exe -i LowPriVMs-1.mp4 -filter_complex "[0:v]split=1[v1]; (...)
• 17:31
  Error "Transparency encoding with auto_alt_ref does not work" when converting a .mov with Alpha to .webm with alpha with ffmpeg [closed] - ThomTTP Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a .mov file with alpha transparency into a .webm file and have been following this thread for help: Convert mov with Alpha to VP9 Webm with Alpha Using ffmpeg The command line I have been using is ffmpeg -r 24/1 -i Desktop/Skel_Walk_1.mov -c:v libvpx -pix_fmt yuva420p Desktop/Skel_Walk_1.webm However when I go to run the command it comes up with 2 errors Transparency encoding with auto_alt_ref does not work and Error initializing output stream 0:0 -- Error while opening encoder for output stream (...)
• 19:12
  Eleven Labs API not working, is ffmpeg not installed properly? - Daniel Masso Pardo Newest 'ffmpeg' Questions - Stack Overflow
  Traceback (most recent call last): File "C:\\Users\\danim\\OneDrive\\Desktop\\programming\\APItests.py", line 9, in play(audio) File "C:\\Users\\danim\\PycharmProjects\\EXAM\\venv\\lib\\site-packages\\elevenlabs\\utils.py", line 25, in play raise ValueError(message) ValueError: ffplay from ffmpeg not found, necessary to play audio. On mac you can install it with 'brew install ffmpeg'. On linux and windows you can install it from https://ffmpeg.org/ I keep getting this error, and yes, I've gone to the web site and installed, made a path "C:\\Users(my (...)
• 15:04
  How to reinitialize AVCodec with updated AVCodecContext on fly - Alemao Newest 'ffmpeg' Questions - Stack Overflow
  There is a question about an old (0.7) version of the FFMPEG(LibAV) library, including to my project as extern "C" #include #include #include #include #include #include I have an AVCodec object, which knows how to encode my frames(to H264 codec). I have an object of AVCodecContext type, initialized with the parameters that I need (bitrate, framerate etc.). AVCodec *encoderVideoCodec = nullptr; AVCodecContext *encoderVideoCodecContext = nullptr; Then I initialize AVCodec with its context, setting some important (...) -- AVCodec
• 09:55
  Converting audio/video tracks to AAC format in C# app - Alex1347 Newest 'ffmpeg' Questions - Stack Overflow
  I try convert audio/video tracks to AAC format using qaac lib. In CMD it works and output information about progress of convertation. In my C# app it works too, but I can't get information about progress, i try use these events: OutputDataReceived, ErrorDataReceived. In handler of ErrorDataReceived I don't get needed information, in handler of OutputDataReceived I get received.Data like null value. How can I get conversion progress information during conversion in C# code? (I use qaac lib because ffmpeg lib convert tracks to AAC incorrect - incorrect duration of result (...) -- qaac

12 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:17
  How to disable slf4j log in java - Model123123 Newest 'ffmpeg' Questions - Stack Overflow
  Sorry for my poor English. I'm using ffmpeg-cli-wrapper library in java [main] INFO net.bramp.ffmpeg.RunProcessFunction - .\\ffprobe.exe -version [main] INFO net.bramp.ffmpeg.RunProcessFunction - .\\ffprobe.exe -v quiet -print_format json -show_error -show_format -show_streams -show_chapters How to remove this log? try this: java.util.logging.Logger.getLogger("net.bramp.ffmpeg").setLevel(Level.OFF); /logger name="net.bramp.ffmpeg" level="OFF"/ in logback.xml but not work... RunProcessFunction (...) -- https://github.com/bramp/ffmpeg-cli-wrapper/blob/master/src/main/java/net/bramp/ffmpeg/RunProcessFunction.java
• 14:44
  Use FFmpeg in Visual Studio - box Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use FFmpeg in a C++ project in Visual Studio 2010. I want to include the libraries as statically linked files. Simple programs like libavcodec/api-example.c compile without error and no linker error appears in the error view when starting them. However, a message box shows up after starting the application, saying that avutil-51.dll is missing. Do you have any hints on how to fix that? I used the latest dev build from http://ffmpeg.zeranoe.com/builds/. Then I specified include as additional include directory, (...) -- libavcodec/api-example.c, http://ffmpeg.zeranoe.com/builds/
• 14:35
  FFmpegKitFlutter, Error: MissingPluginException(No implementation found for method ffmpegSession on channel flutter.arthenica.com/ffmpeg_kit) - 7Solomon Newest 'ffmpeg' Questions - Stack Overflow
  I Have this simple Flutter function, to compress Audio Files import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart'; import 'package:ffmpeg_kit_flutter/return_code.dart'; Future compressAudio(String inputPath) async try // ... final command = '-y -i "$inputPath" ' // Input file '-af "loudnorm=I=-16:TP=-1.5:LRA=11,' // Loudness normalization 'acompressor=threshold=$_config['threshold_db']:' 'ratio=$_config['ratio']:'  (...)

11 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 10:08
  ffmpeg sequence starting at frame 1001 - Kernowkid Newest 'ffmpeg' Questions - Stack Overflow
  I have an image sequence starting at 1001 that I'd like to convert to a mp4 using ffmpeg. Here's what I'm putting in cmd shell: ffmpeg -i plates_sh01_%04d.jpeg start_number 1001 -s 1920x1080 -vcodec libx264 -crf 25 -b:v 4M -pix_fmt yuv420p plates_sh01_%04d.mp4 This works for image sequences starting at frame numbers below 999. For any sequence starting at 1000 or above I get this error: Could find no file with path 'plates_sh01_%04d.jpeg' and index in the range 0-4 plates_sh01_%04d.jpeg_%04d.jpeg: No such file or directory I (...)
• 09:11
  After upgrade ffmpeg code doesn't working clip build - Tchoune Newest 'ffmpeg' Questions - Stack Overflow
  I have a problem after upgrading ffmpeg from 4.2.2 to 5.2.2, my code no longer works. When I upload a video to my React-Native application I get a file corruption error on my FFmpeg python agent. -> sends to Laravel which stores the video on the minio storage; the video is available -> sends http to the minio key to download locally the mp4 video is corrupted on the minio too... I have the impression that it's an error downloading the video locally that makes the video corrupt, but I have no idea how I can debug this problem. If I upload the video directly from my web (...)
• 04:06
  Split a video in two and burn subtitles into each output video - Kairei Newest 'ffmpeg' Questions - Stack Overflow
  I want to split a single input video "input.mp4" into two separate videos "out1.mp4" and "out2.mp4." I also want to burn hard subtitles into each of the output files. The subtitles come from two pre-existing subtitle files "subtitles1.ass" and "subtitles2.ass." I tried just adding -vf "ass=subtitles1.ass" and -vf "ass=subtitles2.ass" before each of the output files. Subtitles from subtitles1.ass were added to out1.mp4 but out2.mp4 had no subtitles. I spent hours reading docs and trying things and realized I probably need a complex filter and mapping so came up with this: ffmpeg.exe (...)
• 03:46
  FFMPEG: webm to mp4 quality loss - turboLoop Newest 'ffmpeg' Questions - Stack Overflow
  When trying to convert a .webm video (two colored animation) to a .mp4 video using ffmpeg (3.4.2 on mac) the result is somewhat blurry. I did research this topic and tried different approaches to solve this. Here is the most promising command: ffmpeg -i vidoe.webm -qscale 1 video.mp4 However, the quality change is still tremendous, see the difference below. webm mp4 The resolution of the two videos is the same, however the size dropped from 24,3MB (.webm) to 1,5MB (.mp4) after conversion.  (...) -- ,
• 01:42
  Output image with correct aspect with ffmpeg - koichirose Newest 'ffmpeg' Questions - Stack Overflow
  I have a mkv video with the following properties (obtained with mediainfo): Width : 718 pixels Height : 432 pixels Display aspect ratio : 2.35:1 Original display aspect ratio : 2.35:1 I'd like to take screenshots of it at certain times: ffmpeg -ss 4212 -i filename.mkv -frames:v 1 -q:v 2 out.jpg This will produce a 718x432 jpg image, but the aspect ratio is wrong (the image is "squeezed" horizontally). AFAIK, the output image should be 1015*432 (with width=height * DAR). Is this calculation correct? Is there a way (...)

10 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:59
  How can I build a custom version of opencv while enabling CUDA and opengl? [closed] - Josh Newest 'ffmpeg' Questions - Stack Overflow
  I have a hard requirement of python3.7 for certain libraries (aeneas & afaligner). I've been using the regular opencv-python and ffmpeg libraries in my program and they've been working find. Recently I wanted to adjust my program to use h264 instead of mpeg4 and ran down a licensing rabbit hole of how opencv-python uses a build of ffmpeg with opengl codecs off to avoid licensing issues. x264 is apparently opengl, and is disabled in the opencv-python library. In order to solve this issue, I built a custom build of opencv using another custom build of ffmpeg both (...)
• 21:24
  OpenCV & RTSP - Python errors - Midhun M Newest 'ffmpeg' Questions - Stack Overflow
  I’m working on a Python script that reads multiple RTSP streams using OpenCV, detects motion, and saves frames when motion is detected. Initially, I faced issues with ash-colored frames due to H.265 codec, which OpenCV doesn’t support by default. After switching the camera codecs to H.264, the ash-colored frames issue was resolved. However, I’m now encountering decoding errors and glitching frames. System Specifications: Processor: Intel Core i3-6100 CPU ⓐ 3.70GHz RAM:8GB Resource Usage: CPU: 35-45% RAM: 1GB max Network Speed: 7.4 Mb/s Disk Usage: 2.3 (...)
• 17:54
  ffmpeg - force_original_aspect_ratio=increase - stretches video height but not width [closed] - Rhys Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to concat 3 videos. But the middle video, is only stretching in height. test1.mp4 test2.mkv test3.gif Which have been encoded into mp4s with ffmpeg test1.mp4 Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, bt709, progressive), 720x1280 [SAR 1:1 DAR 9:16], 30 fps, 30 tbr, 90k tbn test2.mp4 Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, progressive), 538x662 [SAR 1:1 DAR 269:331], 30 fps, 30 tbr, 90k tbn test3.mp4 Stream #0:0[0x100]: Video: mpeg2video (...)
• 09:05
  How to timestamp video with seconds and milliseconds with ffmpeg? [closed] - JulianJ Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to timestamp an .mp4 video with seconds and milliseconds using ffmpeg. I can timestamp with hours, minutes, seconds and milliseconds using the code below but just can't figure out how to print seconds and milliseconds. ffmpeg -i input.mp4 -vf "drawtext=:text='%pts\\:s':rate=25:start_number=0:x=(w-tw)/2:y=h-(3*lh):fontcolor=white:fontsize=50,drawtext=:text='%pts\\:hms':rate=25:start_number=0:x=(w-tw)/2:y=h-(2*lh):fontcolor=white:fontsize=50" (...)
• 13:24
  SRT : No Room to Store Incoming Packets when we stream SRT streams through VLC - Shankar Newest 'ffmpeg' Questions - Stack Overflow
  Hope all you are doing well. Actually i was trying to stream a media file using VLC by SRT protocol. For which, srt-live-transmit is used as converter in between SRT Listener and VLC UDP streams. srt-live-transmit used to convert udp to srt streams(mpegts). But when i tried to do that, after few seconds, i got error in srt-live-transmit terminal that : No room to store incoming packet: What should be the reason for this error? And if anyone know anything about this problem, please share info. It would be helpful. Thank (...)
• 12:29
  PHP cannot run a python script that uses ffmpeg (when the python script runs in terminal) - dr3kiki Newest 'ffmpeg' Questions - Stack Overflow
  In my website, a user uploads an audio file that gets mixed by a python script. The python script uses ffmpeg to translate the files, however it doesn't work when I try executing via php due to ffmpeg, I get this error usr/local/lib/python3.9/site-packages/pydub/utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work") The python script can run (with no errors) in the Linux terminal and ffmpeg can run separately also in the terminal (in the (...)
• 07:04
  How to hide the output of yt-dl in CMD? python - Qais Albeaiz Newest 'ffmpeg' Questions - Stack Overflow
  I'm coding program that download mp3 audio from youtube videos but I have an issue that yt-dl show some output in console my code: with open('Links.txt') as f: content = f.readlines() for links in content: ydl_opts = 'format': 'bestaudio/best', 'postprocessors': [ 'key': 'FFmpegExtractAudio', 'preferredcodec': 'mp3', 'preferredquality': '192', ], with youtube_dl.YoutubeDL(ydl_opts) as ydl:  (...) --

9 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 12:08
  ffmpeg change framerate: Question about bitrate [closed] - schweigerson Newest 'ffmpeg' Questions - Stack Overflow
  Thanks to the forum, I successfully can reduce the frame rate of a video. ffmpeg -i input_50fps.mp4 -filter:v fps=25 output_25fps.mp4 Input and output have a similar bitrate as well as filzesize: File bitrate filesize input_50fps.mp4 2900kBit/s 1.9GB output_25fps.mp4 2528kBit/s 1.7GB Assumption: Divide the number of frames into half should both reduce the bitrate and the filesize accordingly (half the size). Question: Does it make sense to enforce the reduction of the (...)
• 18:46
  How to make multiple ffmpeg commands run in parallel [duplicate] - Kim Mỹ Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the following ffmpeg command to compress video: `nice -n 10 $ffmpegPath -i "$chunkPath" -c:v libx264 -preset fast -crf 28 "$compressedPath"` However, when I run two instances of ffmpeg of this command to achieve parallelism: Either in two child processes within a single Node.js application or in two separate Node.js applications running at the same time, it seems only one command is processed, and the other is skipped. I've noticed that 2 FFmpeg instances are loaded into RAM and both create a starting file for the final compressed video, they (...)
• 18:37
  Thread count option in FFmpeg for FASTEST conversion to h264? - S B Newest 'ffmpeg' Questions - Stack Overflow
  I need to maximize speed while converting videos using FFmpeg to h264 Any input format of source videos User's machine can have any number of cores Power and memory consumption are non-issues Of course, there are a whole bunch of options that can be tweaked but this question is particularly about choosing the best -thread option. I am trying to find an ideal thread count as a function of no. of cores input video format h264-friendly values maybe? anything else missed above? I am aware the default -thread 0 (...)
• 12:25
  How to remove a specific segment from an audio file using timestamps? [closed] - Hilal Khan Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a C# project where I need to remove a specific segment from an audio file (e.g., WAV, MP3) based on start and end timestamps, while keeping the rest of the audio intact. For example, given a 20-minute audio file, I want to remove the section from 17:00 to 19:00 and be left with a new audio file containing only 0:00-17:00 and 19:00-20:00 (i.e., keeping the parts before and after the cut). I have used NAudio and FFmpeg to trim a file by cutting from the start or end, but I only get my desired snippet as a separate file which is not what I am looking for as I want (...)

8 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:29
  ffplay aevalscr concat not transitioning smoothly - mr.freeze Newest 'ffmpeg' Questions - Stack Overflow
  Given this ffplay command, I am expecting that the sine wave goes from 440hz to 454.4hz over 10 seconds then continue playing at 454.4hz for another 10 seconds. Instead, the transition is at different frequencies making it not smooth. What am I doing wrong? ffplay -f lavfi -i " aevalsrc='sin(2*PI*t*(440 + (14.4*t/10)))':s=44100:d=10[wave1]; aevalsrc='sin(2*PI*t*454.4)':s=44100:d=10[wave2]; [wave1]afade=t=in:st=0:d=5[wave1]; [wave2]afade=t=out:st=5:d=5[wave2]; [wave1][wave2] (...)
• 21:40
  Play video with multiple audio tracks - different languages to separate devices - Sandre Newest 'ffmpeg' Questions - Stack Overflow
  I want watch movie with my wife, listening to different audio channels - one language for me, another for my wife. I found solution and it works fine but not optimal. I know nothing about audio conversion, so asking to make it better. I'm using ffmpeg to combine separate stereo tracks to 5.1, then playing using IINA to Agregate device defined in Audio MIDI Setup (Speakers and bluetooth headphone). This for MacOS, but I'm pretty sure something similar will work for windows, taking in count IINA under hood use MPV. ffmpeg -i eng.mp3 -filter_complex (...) --
• 18:30
  How to Remove a Specific Segment from an Audio File Using Timestamps in C#? [closed] - Hilal Khan Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a C# project where I need to remove a specific segment from an audio file (e.g., WAV, MP3) based on start and end timestamps, while keeping the rest of the audio intact. For example, given a 20-minute audio file, I want to remove the section from 17:00 to 19:00 and be left with a new audio file containing only 0:00-17:00 and 19:00-20:00 (i.e., keeping the parts before and after the cut). I have used NAudio and FFmpeg to trim a file by cutting from the start or end, but I only get my desired snippet as a separate file which is not what I am looking for as I want (...)
• 14:39
  How do I combine videos with ffmpeg with delay? - Isaiah Barrier Newest 'ffmpeg' Questions - Stack Overflow
  I have 44 videos that are all encoded the same and have the same dimensions, and they all have audio. I want to combine all of them with a 0.5 second pause between them in ffmpeg. How do I do that? The command I used that combines them without delay is ffmpeg -f concat -safe 0 -i fl.txt -c copy -map 0 output.mp4
• 14:27
  why does ffmpeg export black video? - Sling Ring Newest 'ffmpeg' Questions - Stack Overflow
  i give ffmpeg a simple task which is the following ffmpeg -i test.avi -c:v rawvideo -pix_fmt yuv420p out.yuv i try to play the video but it gives a black screen, even in a .yuv player. ffmpeg supposedly "running" Is there some human error that i am doing? Signed Slingring -- ffmpeg supposedly "running"
• 13:30
  Python Discord Music Bot: Playing next song while current song is playing - Deltrac Newest 'ffmpeg' Questions - Stack Overflow
  I've been working on a Discord bot and got it working 90% of the time. On some occasions, the bot will be playing a song and it will stop playing and just move to the next song. My assumption is that it's because of how I am handling my play command and the play_next command as well. I've tried to re-arrange the code, change functionality, etc. without success. Here are the two commands: ⓐclient.command(name="p") async def play(ctx, *, search_query: str): global bot_disconnect try: # Only start a song if the user trying to play a song is in (...)
• 06:37
  How to set ffmpeg reconnect or quit when rtsp stream connection breaks - hate29 Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to save rtsp stream from my wi-fi camera. It works fine but when connection dies, I don't get any notice or it doesn't reconnect automatically. Here's my command: screen -S garage ffmpeg -hide_banner -y -loglevel error -rtsp_transport tcp -use_wallclock_as_timestamps 1 -i rtsp://user:passwordⓐ192.168.XXX.XXX:XXX/stream1 -vcodec copy -acodec copy -f segment -reset_timestamps 1 -segment_time 14400 -segment_format mkv -segment_atclocktime 1 -strftime 1 garage%Y%m%dT%H%M%S.mkv I found this code from this site (if I remember correctly), tinkered a (...)

6 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:26
  cross compiling ffmpeg with conan fails: x86_64-w64-mingw32-ld: unrecognised emulation mode: 64 - ovni jeroqui Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to install ffmpeg (and some other libraries, but ffmpeg alone fails too) with conan to cross compile from linux (ubuntu) to windows. Conan throws an error on Running configure, inside build(). It says that x86_64-w64-mingw32-gcc is unable to create an executable file.. On the config log I discovered it's because of a flag when running tests for x86_64-w64-mingw32-ld. x86_64-w64-mingw32-ld -m64 -L/home/jeroqui/.conan2/p/b/freetd8d522cfe5ed9/p/lib -L/home/jeroqui/.conan2/p/b/libsv9862cce477f3c/p/lib -L/home/jeroqui/.conan2/p/b/opensf32bb84148b27/p/lib (...)
• 13:51
  cv2/ffmpeg "grabFrame packet read max attempts exceeded" error after exactly reading certain number of frames - banjaxing Newest 'ffmpeg' Questions - Stack Overflow
  I am using OpenCV to extract frames from videos, run a segmentation AI model, and save the frames and masks to a folder. When I run my code to extract the frame from I encounter the error "grabFrame packet read max attempts exceeded" after processing a certain number of frames. This issue occurs consistently for the same videos across multiple environments. Error message: [ WARN:0ⓐ379.898] global cap_ffmpeg_impl.hpp:1541 grabFrame packet read max attempts exceeded, if your video have multiple streams (video, audio) try to increase attempt limit by setting environment variable (...)
• 13:27
  Remove a section from the middle of a video without concat - user3310334 Newest 'ffmpeg' Questions - Stack Overflow
  How do I cut a section out of a video with ffmpeg? Imagine I have a 60 second mp4 A. I want to remove all the stuff from 0:15 to 0:45. The result should be a 30-second mp4, which is composed of the first 15 seconds of A directly followed by the last 15 seconds of A. How can I do this without using concat? I know how I could do it by creating two intermediary files and then using ffmpeg to concat them. I don't want to have to perform so much manual work for this (simple?) operation. I have also seen the trim filder used for removing multiple parts from a (...)
• 09:07
  Unable to retrieve video stream from RTSP URL inside Docker container - birdalugur Newest 'ffmpeg' Questions - Stack Overflow
  I have a FastAPI application running inside a Docker container that is trying to stream video from an RTSP camera URL using OpenCV. The setup works fine locally, but when running inside Docker, the /video endpoint does not return a stream and times out. Below are the details of the issue. Docker Setup: Dockerfile: FROM python:3.10.12 RUN apt-get update && apt-get install -y \\ libgl1-mesa-glx \\ libglib2.0-0 WORKDIR /app COPY requirements.txt . RUN pip install --no-cache-dir -r requirements.txt COPY . . CMD (...)

5 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:25
  How to change pitch and tempo together, reliably with ffmpeg [closed] - Ray C Newest 'ffmpeg' Questions - Stack Overflow
  I know how to change tempo with atempo, but the audio file becomes distorted a bit, and I can't find a reliable way to change pitch. (say, increase tempo and pitch together 140%) Sox has a speed option, but truncates the volume AND isn't as widely available as ffmpeg. mplayer has a speed option which works perfectly, but I can't output without additional libraries. I seem to understand ffmpeg doesn't have a way to change pitch (maybe it does recently?) but is there a way to change frequency or some other flags to emulate changing pitch? Looked quite (...)
• 18:28
  Best practices for developing scalable video transcoding server on Amazon Web Services? [closed] - undefined Newest 'ffmpeg' Questions - Stack Overflow
  What do people think are the most important issues when developing an application that is going to allow users to upload video and images to a server and have them transcoded by FFMPEG and stored in amazon S3? I have a couple of options; install FFMPEG on the same server that handles file uploads, when a video is uploaded and stored on EC2 instance, call FFMPEG to convert it then when done, write the file to S3 bucket and dispose of the original. How scalable is this? What happens when many users upload at the same time? How do I manage multiple processes at once? How (...)
• 16:08
  Unable to write textclip with moviepy due to errors with Imagemagick - Sato Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to write TextClip into a video with moviepy. It has always been working, yet after I reinstalled ffmpeg, it doesn't work anymore (I am not sure whether it has caused it, but I mentioned it in case it does). Some of the TextClip objects are pure spaces. I got the following error message: Traceback (most recent call last): File "C:\\Users\\USER\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\\LocalCache\\local-packages\\Python38\\site-packages\\moviepy\\video\\VideoClip.py", line 1137, in __init__ subprocess_call(cmd, logger=None)  (...)
• 15:09
  Ffmpeg PNG image sequence into 360 video - Irmak Ozarslan Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to make a PNG sequence I got from blender(already in equirectangular format, same properties all files) into 360 equirectangular video for projection mapping. My files have 2 step frame rate resulting in file names such as 002-004-006.... How is this done with ffmpeg? I'm total noob with this program :) Thank you. I checked ffmpeg website, however for 360 format with filenames that does not have one step like 01-02-03, instead 2 steps like 02-04-06, I did not really understand how to convert my 7000 PNG images into 360 (...)
• 03:31
  ffmpeg Non monotonous DTS, Previous DTS is always the same, audio microphone streaming [closed] - adrien gonzalez Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to stream audio from a microphone using rtp. I'm on Raspberry and use an external sound card (HifiBerry DAC + ADC Pro). My goal is to stream audio with the lowest latency possible to others Raspberry reading this audio with ffplay. I try not to compress the audio flux and leave it untouched as wav 48000 Hz. I encounter often some Non Monotonous DTS errors. When this happens I have a latency of hundred of milliseconds adding itself. I tried to add the +igndts flag but it is not changing anything. Also tried +genpts flag. What is (...)
• 01:14
  FFMPEG commands isn't working in Android Q - Krupali Shingala Newest 'ffmpeg' Questions - Stack Overflow
  Try this command for merge two audio files, but its not working in Android 10.0(Q) while targeting sdk 29. But, this command is completely working on targeting sdk 24 to 28. I am using this library of FFMPEG implementation 'nl.bravobit:android-ffmpeg:1.1.7' "-y", "-i", path1, "-i", path2, "-filter_complex", "[0:0][1:0] amix=inputs=2:duration=longest", "-c:a", "libmp3lame", savedPath my Error log: 2019-09-28 13:48:32.037 16041-16166/com.merger.cut E/FFmpeg: Exception while trying to run: [/data/user/0/com..merger.cut/files/ffmpeg, -y, -i, (...)

4 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:14
  How to force timecode change ffmpeg convert video to audio - little star Newest 'ffmpeg' Questions - Stack Overflow
  I'm having problem to force timecode change while converting a video to an audio using ffmpeg. This is the command I'm trying: ffmpeg.exe -i source.MP4 -vn -map 0:d -timecode 01:20:10:00 -y target.mov This is showing the Time code of first frame as the source one, it is not overwriting it. How can I force it to change on one command? So I want to convert video to audio and force timecode change , is that possible?
• 12:22
  The problem with the AudioDispatcher, the analysis in audioDispatcherFactory is not running, TarsosDSP - roman_gor_ Newest 'ffmpeg' Questions - Stack Overflow
  I'm making an application for sound analysis and spotlight control. The colors of the spotlight change to the beat of the music. I use the TarsosDSP library for this, additionally downloaded the FFmpeg-Kit library to convert audio to WAV format, PCM 16L to work with audioDispatcher. The problem is that when audio is transmitted in the correct format, dispatcher starts and immediately ends. The boolean Process method is not executed, but the process Finished() method is executed. I found out that the stream starts, the file is not empty, it is converted to the correct format, BUT (...)
• 10:04
  Which StackExchange should be a configuration/compilation question? [migrated] - Lerenn Newest 'ffmpeg' Questions - Stack Overflow
  I asked a question yesterday on a configuration/compilation error regarding FFMPEG with NVCC that threw up some C++ errors. Being a source code error, I thought that the StackOverflow part was appropriate but apparently not. Could you help me find on which StackExchange I should post my question ? Here is my old post: Configuration error when configuring the FFMPEG compilation with NVCC/CUDA Thank you !!
• 06:45
  PyQt6 6.7.0 - How to fix error: No QtMultimedia backends found - Belleroph0N Newest 'ffmpeg' Questions - Stack Overflow
  Problem on Windows 10 and Windows 11 using Anaconda. Here is the full error message for PyQt6=6.7.0: No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and QAudioSource are available. Failed to initialize QMediaPlayer "Not available" Failed to create QVideoSink "Not available" Installed PyQt6 using a requirements file: PyQt6 PyQt6-WebEngine requests pyserial pynput Here are a couple things I tried: Reroll version back to PyQt6=6.6.1. This results in an error as well: ImportError: DLL (...) -- issue
• 06:39
  Comparing the video/audio output of ffmpeg commands between versions to test for regessions - lavantgarde Newest 'ffmpeg' Questions - Stack Overflow
  Our software uses ffmpeg to do various video/audio encoding (e.g. changing volume, re-encoding to a different video format (e.g. yuv420p), scaling, etc.) Every few months we upgrade ffmpeg versions, and we've found that sometimes parameters change and regressions are introduced. What ffmpeg tools could we use to create unit tests to validate certain commands for regressions? I believe checking hashes won't be enough; doing visual inspections manually is also something we'd like to avoid to automate. Here's an example pseudocode: var ffmpegV1 = (...)

3 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:27
  pydub - setting the start time of an audio file? [closed] - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  I have an audio file, which I create using pydub, and when I use ffmpeg to play I notice it has a start time defined: Input #0, mpeg, from 'audio_117.ts': Duration: 00:00:09.91, start: 0.500000, bitrate: 66 kb/s I am trying to play the same audio file but with different formats. And I notice the start time is different with each format.: mp3: Input #0, mp3, from 'audio_117.mp3': Metadata: encoder : Lavf61.7.100 Duration: 00:00:10.03, start: 0.023021, bitrate: 64 kb/s ogg: Input #0, ogg, from (...)
• 20:20
  Enable Quality Selector Control in Angular Using Video.js - Abhay Singh Newest 'ffmpeg' Questions - Stack Overflow
  I am using Video.js in an Angular 19.1.3 application, with version 8.21.0 of Video.js. I have successfully set up an HLS stream using a master index.m3u8 file, and the player automatically switches to lower quality segments when the network is slow, and to higher quality when the network is good. This part works as expected. However, I would like to add a manual quality selection option to allow users to choose the video quality themselves. Despite trying several plugins (such as videojs-hls-quality-selector and videojs-contrib-quality-levels), I haven't been able to get it (...)
• 06:02
  ffmpeg pix_fmt yuv420p encoder [closed] - Piotr Sikora Newest 'ffmpeg' Questions - Stack Overflow
  I need to rewrite my ffmpeg command to use CUDA-a. my starting command was: ffmpeg -i 5ee1ac69-cdd6-4044-8bf5-08fc47db2cd9 -y -acodec libfdk_aac -vcodec h264 -threads 4 -f mp4 -movflags faststart -max_muxing_queue_size 1024 -map_metadata -1 -pix_fmt yuv420p -q:a 5 -vf scale=w=240:h=-2 -preset medium -maxrate:v 522240 -bufsize:v 1044480 -b_strategy 1 -bf 16 -r 30 -g:v 60 -bf 4 -gpu 0 test-orig.mp4 Next I changed -vcodec h264_nvenc Following I added -hwaccel cuda and everythn works But when I want to add -hwaccel_output_format cuda I found two problems. First (...)
• 16:23
  Configuration error when configuring the FFMPEG compilation with NVCC/CUDA [closed] - Lerenn Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to compile the last FFMPEG version (49726a922fd2b358feb7753488d415180da5121c) on Fedora 41 with some libraries, including the CUDA libraries. Everything works well when compiling without CUDA, but I have 2 cryptic errors when trying to run the configure command with the NVCC: nvcc -gencode arch=compute_60,code=sm_60 -O2 -std=c++11 -m64 -ptx -c -o /tmp/ffconf.q0uMcStN/test.o /tmp/ffconf.q0uMcStN/test.cu nvcc warning : Support for offline compilation for architectures prior to '_75' will be removed in a future release (Use (...) -- https://docs.nvidia.com/cuda/cuda-toolkit-release-notes/index.html
• 15:00
  What are the alternatives for ffserver? - Benjamin Newest 'ffmpeg' Questions - Stack Overflow
  Since the ffmpeg no longer support ffserver, then which server could I use to steamming videos transcoded by ffmpeg?
• 05:17
  Merged Video Contains Inverted Clips After First Video Ends - Nikunj Agrawal Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a Flutter application that merges multiple videos using ffmpeg_kit_flutter . However, after merging, I notice that the second video (and any subsequent ones) appear inverted or rotated in the final output. Issue Details: The first video appears normal. The videos can be recorded using both front and back cameras. The second (and later) videos are flipped or rotated upside down. This happens after merging using ffmpeg_kit_flutter. Question: How can I correctly merge multiple videos in Flutter without rotation issues? Is there a way to (...)

2 février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:36
  FFMPEG not saving logs when converting to audio format - PUXIII Newest 'ffmpeg' Questions - Stack Overflow
  The command does not save or even create a file: ffmpeg -i "video.mp4" -f mp3 "audio.mp3" -vstats_file "log_file.log" And if you convert to a video file, everything normally creates and writes: ffmpeg -i "video.mp4" -f mp3 "video.avi" -vstats_file "log_file.log" Goal: to pull out the time from the log file and bind it to the process bar. There are no problems with video, everything works. But with the sound does not work. I tried the command: ffmpeg -i "video.mp4" -f mp3 "video.avi" >2 "log_file.txt" But there are other problems popping (...)
• 21:07
  Use nvidia hardware acceleration to merge webms with pngs in ffmpeg - Joshi234 Newest 'ffmpeg' Questions - Stack Overflow
  So I need to merge around 18000 webms with with pngs, however on software encoding it's really slow, so I'm trying to use hardware acceleration to make this faster. I tried a lot of different stuff but none of them seems to work and it gives me generic errors to what I couldn't find anything relavant. This is the most "succesful" try I had: ffmpeg -hwaccel cuvid -c:v vp9_cuvid -i lightray.webm -i card.png -filter_complex "[1]format=argb,colorchannelmixer=aa=0.35[ol];[0][ol]overlay" -colorspace 5 -c:a copy output.webm Which gives me this error: ffmpeg (...)
• 19:11
  How to execute FFMPEG using a compiled FFMPEG jar on Android - Valtinho Newest 'ffmpeg' Questions - Stack Overflow
  I added org.bytedeco.javacpp's ffmpeg-2.3-0-9.jar (https://www.versioneye.com/java/org.bytedeco.javacpp-presets:ffmpeg/2.3-0.9) and I need to be able to execute a command inside of my android app, such as: ffmpeg -ss 00:00:00 -t 00:00:15 -i in.mp4 -codec copy out.mp4 However, "ffmpeg" is not a class or a method that is exposed by this jar. Some posts suggest that I should be using the exec method when dealing with ffmpeg native code, but how do you do that (if that's even the right thing to do with this library)? I am trying the following command (...) -- https://www.versioneye.com/java/org.bytedeco.javacpp-presets:ffmpeg/2.3-0.9
• 15:53
  Automating Basic Video Editing [closed] - user29470652 Newest 'ffmpeg' Questions - Stack Overflow
  What's guys! I am a beginner in programming. As of now, I have created a basic YouTube downloader with the help of Python, FFmpeg, yt dlp, and Flaskapp. Now, I am automating the basic video editing part ( Turn bulk video files into a basic similar edit like we have one template then we add a caption from the title of the video, then place the video in the center of the template trim out to meet the video length of the given video then saving it) with the help of FFmpeg. Has anyone already tried or built it?? Any marketer or video editor?? I am halfway to the (...) -- enter image description here
• 17:14
  How to Merge two videos without re-encoding [duplicate] - Yogesh Agarwal Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to Merge two video without re-encoding them. Currently i use a approach which is too much time consuming and resource as well. I just want to merge without re-encoding them. Currently i am using exec ( "cpulimit -l 90 ffmpeg -i $filename1 -qscale 0 $intermediate1 &> stream1.log" ); exec ( "cpulimit -l 90 ffmpeg -i $filename2 -qscale 0 $intermediate2 &> stream2.log" ); $output = '/var/www/html/myserver/merg/'.uniqid().'_merge.'.$ext; exec ( "cpulimit -l 90 cat $intermediate1 $intermediate2 | ffmpeg -i - -qscale 0 (...)
• 16:24
  How can I extract audio from video with ffmpeg? - user1269669 Newest 'ffmpeg' Questions - Stack Overflow
  I tried the following command to extract audio from video: ffmpeg -i Sample.avi -vn -ar 44100 -ac 2 -ab 192k -f mp3 Sample.mp3 but I get the following output libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.19. 0 / 1.19. 0 libswscale 0.11. 0 / 0.11. 0 libpostproc 51. 2. 0 / 51. 2. 0 SamplE.avi: Invalid data found when processing input Can anyone help, (...)
• 10:26
  Gstreamer: how to achieve the same effect as ffmpeg filter tmix - dudengke Newest 'ffmpeg' Questions - Stack Overflow
  The ffmpeg command can smooth video: ffmpeg -i 1.h265 -vf "tmix=frames=3:weights=1 1 1" 2.h265 Now i want to use gstreamer to smooth but I can't find the avfilter in gst-libav gst-launch-1.0 filesrc location=1.h265 ! decodebin ! videoconvert ! avfilter filter="tmix=frames=3:weights=1 1 1" ! videoconvert ! gstsink My question: Is there another way gstreamer can achieve the same effect as "tmix" in ffmpeg? I tried chatGPT, but the effect was not. gst-launch-1.0 filesrc location=1.h265 ! h265parse ! avdec_h265 ! videoconvert ! tee name=t \\ t. ! (...) -- gst-libav
• 07:19
  Extracting segment from MTS video without re-rendering and get thin changing color band on top of output - David Newest 'ffmpeg' Questions - Stack Overflow
  Extracting segment from .MTS video without re-rendering (for speed) and get a thin changing multi-color band on top of output. There is no band on the original video. How can this be prevented? I used the following commands: set i="" set o="" %pgm% -i %i% -ss 2:40 -to 8:39 -async 1 %o% -c:v copy -c:a copy

1er février

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:16
  How to fix 'ffmpeg server returned 403 forbidden (access denied)? - peppah Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a website to convert youtube videos using NodeJS. I am using a package to convert them (horizon-youtube-mp3). The package works, however, I'm having problems converting. Whenever I try to convert a youtube link, it will return 'server returned 403 forbidden access'. This error happens in 95% of the links. Some links actually work and convert correctly, but only a few. I tried running the script on 3 different computers running 3 different OS's. My VPS, my laptop and my home PC. I looked on the web but couldn't find anything (...)
• 07:37
  How to check if video have visually corrupted frames? - B Lolo Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to convert and analyze video, mostly avi to mkv. Sometimes video that I work on have one frame corrupted in random place, , it looks like: Digital scramble How to check if frame is visually corrupted in ffmpeg? It's not file corruption (not byte corruption), I know that because this video artifact is present in source file, it's just visual corruption. This command line gives error free result: ffmpeg -i myinput.avi params out.mkv 2> error_log.txt How to find if similar pattern is on any more frames (...) -- Digital scramble
• 06:03
  varying RTP stream result from custom SIP implementation - Nik Hendricks Newest 'ffmpeg' Questions - Stack Overflow
  I am in the process of creating my own SIP implementation in Node.js. As well as a b2bua as a learning project. Finding people wise in the ways of SIP has proved to be difficult elsewhere but here I have had good results this is the GitHub of my library so far node.js-sip this is the GitHub of my PBX so far FlowPBX Currently, everything is working as I expect. Although I really have some questions on possible errors in my implementation. My main issue is with RTP streams. Currently I am utilizing ffmpeg. my function goes as follows start_stream(call_id, (...) -- node.js-sip, FlowPBX
• 04:56
  Average set of 5 frames into single output frames - xnx Newest 'ffmpeg' Questions - Stack Overflow
  I would like to average the values of sequences of frames into a single output frames. I think this would be the ffmpeg tmix filter, but I can't find the right setting. Example behavior: Input video frames: 1,2,3,4,5 -> Output video frame: 1 Input video frames: 6,7,8,9,10 -> Output video frame: 2 Input video frames: 11,12,13,14,15 -> Output video frame: 3 etc. How could I do this with ffmpeg, or any other tool?

31 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 00:42
  How do I chromakey an enclosed shape (or background) in ffmpeg? [closed] - JustAnotherCodemonkey Newest 'ffmpeg' Questions - Stack Overflow
  I have an animation with a fully contiguous 0xFFFFFF white background I want to remove. The issue is that the foreground contains the same exact color. These parts are all completely enclosed and contained within at least several pixels of a different shade at its weakest. All I need is to be able to essentially, for each frame, make all pixels that are white and connected by white to 0,0, transparent. Chromakey and its siblings remove those bits from the foreground as well which is unacceptable and backgroundkey, well you can imagine how that goes. I'm somewhat proficient (...)
• 13:09
  Scalable Webinar Features Using Open-Source Tools? [closed] - Firas Ben said Newest 'ffmpeg' Questions - Stack Overflow
  I am searching for a scalable webinar solution that can handle 1000+ concurrent users. I have explored platforms like BigBlueButton but encountered limitations with scalability in real-world scenarios. My requirements include: Support for RTMP and HLS streaming. Chat and screen-sharing functionalities. Ability to integrate with custom APIs. I’d like to know how to address these challenges using open-source tools. For instance: What configurations are necessary to scale tools like BigBlueButton for large audiences? Are there specific (...)
• 15:02
  How to Use Temporal and Spatial Scalability with SVT-AV1 in FFMPEG? - MReza Newest 'ffmpeg' Questions - Stack Overflow
  I am working with SvtAv1EncApp to see the impact of temporal and spatial scalability. I have successfully compiled the codec provided in https://gitlab.com/AOMediaCodec/SVT-AV1/ and built it with FFMPEG. I would like to encode my *.yuv uncompressed video file with scalable bitstream notably with one base layer + one or multiple enhancement layers (both temporal and spatial if possible). Then by -oppoint option provided by https://ffmpeg.org/ffmpeg-codecs.html#Options-30 would show me the quality difference at the decoder side. However, I do not know how to encode and (...) -- https://gitlab.com/AOMediaCodec/SVT-AV1/, https://ffmpeg.org/ffmpeg-codecs.html#Options-30
• 09:01
  Moviepy V2 How do you position a TextClip and apply an effect? - Brandon Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to refactor my code to use the new Moviepy Version 2.0 and I'm having trouble with .with_position / SlideIn / SlideOut effect. When I apply the SlideIn effect it seems to override any position I have applied. It there a way to explicitly set the position of a TextClip and apply a SlideIn and SlideOut effect without using nested CompositeVideoClip? In the below example the with_position((0,0)) would not be implemented and the position of the TextClip would revert to the default centred position. If I remove the lines .with_effect... then the TextClip would be (...)
• 05:11
  How to use the video datastreaming I get from nginx server? - Jennie Tsai Newest 'ffmpeg' Questions - Stack Overflow
  I have three nodes in my network: dataServer --- node1 --- node2. My video data "friends.mp4" is saved on dataServer. I started both dataServer and node2 as rtmp-nginx servers. I use ffmpeg on node1 to pull datastreaming on dataServerand and push the converted datastreaming to the application "live" on node2. Here's my configuration of nginx.conf for node2. worker_processes 1; events worker_connections 1024; rtmp server listen 1935; chunk_size 4000; application play play /usr/local/nginx/html/play;  (...)
• 06:13
  How do I read a video's length/duration? - DnK Newest 'ffmpeg' Questions - Stack Overflow
  How can I batch generate .edl files for a folder of videos with different run times? I need to skip an exact amount of seconds from the start and another from the end. Videos have different runtimes. I can make .edl files for skipping the intro but need a way to read the video runtime to skip the last 60 or 90 seconds. Edit decision list format: 0:00:00 0:01:20. 3 If the video is 40 minutes 30 seconds the edit decision list skipping 80 seconds from the start and 90 seconds from the end should be: 0:00:00 0:01:20. 3 0:39:00 0:40:30. (...) -- .edl files
• 04:13
  How to convert multiple video files in a specific path outputvideo with the same video name - Oussama Gamer Newest 'ffmpeg' Questions - Stack Overflow
  The following code to converts a one video from mp4 to avi using ffmpeg ffmpeg.exe -i "kingman.mp4" -c copy "kingman.avi" I need to convert multiple videos in a specific path. "outputvideo" with the same video name This is the my code that needs to be modified. from pathlib import Path import subprocess from glob import glob all_files = glob('./video/*.mp4') for filename in all_files: videofile = Path(filename) outputfile = Path(r"./outputvideo/") codec = "copy" ffmpeg_path = (r"ffmpeg.exe") outputfile = (...)
• 03:06
  Cannot display ffprobe information from youtube properly - Krishnaap Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to grab information from youtube streams using ffprobe and python. I could display offline video information properly on python, cannot do the same from youtube live streams. os.system("ffprobe -hide_banner -stats -v quiet -pretty -show_entries format=size,duration:stream=filename,index,codec_type,codec_name,profile,bit_rate,width,height -of compact -i https://www.youtube.com/watch?v=QzsfLSP6hkI") showing an error Argument 'https://www.youtube.com/watch?v=QzsfLSP6hkI' provided as input filename, but 'quiet' was already (...)

30 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:08
  ffmpeg video segment conflicts with frame_skip setpts filters - Jeff Hansen Newest 'ffmpeg' Questions - Stack Overflow
  My goal is to record an rtsp stream into 5 second segments, but I want those segments to only include every 5th frame and be as compact as possible. Essentially, the resulting video will be a 1 second video that shows 5 seconds of realtime content. I have found that ffmpeg has video segment muxing that works really well. I have also found that I can apply a -filter:v select=not(mod(n\\,frame_skip)),setpts=PTS/frame_skip filter to only keep every 5th frame and also ensure that the resulting mp4 is 1 second instead of 5 seconds. This time reduction saves space, AND it also ensures that (...)
• 12:35
  Getting ffmpeg to capture the full screen of xfvb-run screen running puppeteer script, and send it over rtmp - james Newest 'ffmpeg' Questions - Stack Overflow
  My problem I can't get ffmpeg or xvfb-run to stream the full screen to ffplay/videolan, it only captures a part of the screen. Update 2 I answered the question myself in a follow up answer, hopefully it can be useful for someone else with the same problem. Update 1 So the problem is definitely with xvfb-run, since the two following commands, still give a webm file, that only show parts of the screen ffmpeg -f x11grab -i :99 -g 50 -b:v 4000k -maxrate 4000k -bufsize 8000k -f webm -s 384x216 "blank.webm" xvfb-run -n 99 -a --server-args="-screen 0 (...)
• 05:24
  How to split an incoming stream into multiple streams with different resolutions? - Cobalt Newest 'ffmpeg' Questions - Stack Overflow
  How to split an incoming stream into several streams with different resolutions on the MediaMTX server? There is one incoming stream in rtsp, it needs to be split into several channels with different resolutions. I think in the direction of ffmpeg, but I don't understand how to register this in the mediamtx settings.
• 05:24
  FFmpeg move overlay from one pixel coordinate to another - occvtech Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to write a command within FFmpeg that will first overlay one video stream on top of another one. Then I want the overlayed video to move from one pixel coordinate at a known time, and end at another pixel coordinate at a later time. I'm comfortable with the basics of the -filter_complex, but I cannot figure out how to apply any arithmetic expressions - like the one's referenced here: https://www.ffmpeg.org/ffmpeg-utils.html#Expression-Evaluation Here's an example of something I'd like to accomplish. ffmpeg -i [INPUT1] -i (...) -- https://www.ffmpeg.org/ffmpeg-utils.html#Expression-Evaluation

29 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:49
  python converting video to audio - programmer44 Newest 'ffmpeg' Questions - Stack Overflow
  We are working on a project to convert video to audio, and this is the sample code: from converter import Converter from moviepy.editor import * c = Converter() clipv = 'g.mp4' clipc = VideoFileClip(clipv).subclip(0,20) conv = c.convert(clipc, 'clip5.mp3', 'format':'mp3','audio':'codec': 'mp3','bitrate':'22050','channels':1) for timecode in conv: pass However, it gives me this error Traceback (most recent call last) File (...)
• 14:59
  FFmpeg av_dump_format showing incorrect output, but ffprobe displays correct metadata - グルグル Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg 7.1 source build on windows and compilation configuration as follow: configuration: --toolchain=msvc --arch=x86_64 --enable-x86asm --enable-asm --enable-shared --enable-w32threads --prefix=/D/build When I use av_dump_format to print metadata of test.mp3, it display the incorrect information. extern "C" #include int main() av_log_set_level(AV_LOG_DEBUG); auto url = "D:/music/test.mp3"; AVFormatContext* fmt; auto ret = avformat_open_input(&fmt, url, nullptr, (...)
• 13:55
  converting mp3 to ts with ffmpeg [closed] - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  i have an mp3 of about 50 kb. if i use ffmpeg to convert to ts: ffmpeg -i sample.mp3 sample.ts i end up getting a file of almost 200kb. while if i use some online software which converts mp3 to ts (https://clideo.com/editor/?convertTo=TS for example), i get a file with similar size to the original mp3. why does the ffmpeg conversion creates such a large file? is it possible to reduce that? -- https://clideo.com/editor/?convertTo=TS
• 09:09
  GPU-accelerated video processing with ffmpeg - Wang Hai Newest 'ffmpeg' Questions - Stack Overflow
  I want to use ffmpeg to accelerate video encode and decode with an NVIDIA GPU. From NVIDIA's website: NVIDIA GPUs contain one or more hardware-based decoder and encoder(s) (separate from the CUDA cores) which provides fully-accelerated hardware-based video decoding and encoding for several popular codecs. With decoding/encoding offloaded, the graphics engine and the CPU are free for other operations. My question is: can I use CUDA cores to encode and decode video, maybe (...) -- NVIDIA's website
• 09:07
  HlS playlist skip files with ffmpeg - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  I simply downloaded 5 mp3 files from here: https://samplelib.com/sample-mp3.html which means i have: sample-3s.mp3 sample-6s.mp3 sample-9s.mp3 sample-12s.mp3 sample-15s.mp3 and then i create a simple hls playlist sample.m3u8: #EXTM3U #EXT-X-TARGETDURATION:20 #EXT-X-MEDIA-SEQUENCE:0 #EXTINF:3.0, sample-3s.mp3 #EXTINF:6.0, sample-6s.mp3 #EXTINF:9.0, sample-9s.mp3 #EXTINF:12.0, sample-12s.mp3 #EXTINF:15.0, sample-15s.mp3 But when i play this playlist: ffplay sample.m3u8 i (...) -- https://samplelib.com/sample-mp3.html

28 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:02
  Silent Audio In Concatenated MP4s (Python, FFMPEG) - John Coleman Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to solve an issue with concatenating several video files and ending up with silent audio for the whole generated video. Part of this is generating two videos, one title and one end screen, created from images, which I have added silence to. I then take these and add up to seven videos (with stereo audio, 48000hz). So, it ends up being Title + up to seven videos + end screen. I've added silence to the title/end screens, set the sample rate, channels, etc. but still no go. I still lose audio on the videos that should have audio (that originally did).  (...)
• 06:23
  orangepi zero 2w, ubuntu, using a usb webcam ffmpeg to record videos, low FPS [closed] - Qingfu Shi Newest 'ffmpeg' Questions - Stack Overflow
  I use a OrpangePi zero 2w, USB HIK 2K Cam, to record videos. Ubuntu, ffmpeg installed, the cmd ffmpeg -f v4l2 -video_size 1920x1080 -r 25 -input_format mjpeg -i /dev/video1 -vf "transpose=1" -c:v libx264 -preset fast -crf 23 output.mp4 I want the fps to be at least 25, so it looks smooth, but I only got about 4.7 fps. ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 11 (Ubuntu 11.2.0-19ubuntu1) configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened (...)
• 13:52
  ImportError: No module named 'pydub' - ensminger Newest 'ffmpeg' Questions - Stack Overflow
  I am creating a simple script that will use pydub to fetch files from a directory based on their name, then stitch a few of them together and export the result. I had the script working great in a Windows environment (Win 7, python 3.4), but now I'm trying to run on OSX. I have installed all necessary components - ffmpeg, libav. I have just installed pydub with pip, pulling directly from github. My file starts with the input statement from pydub import AudioSegment, and this is what I get: Traceback (most recent call last): File (...) -- github
• 13:30
  FFmpeg avio_open_dir returns -40 on Windows, even when directory exists - グルグル Newest 'ffmpeg' Questions - Stack Overflow
  I'm use ffmpeg7.1 on windows 10. And libavformat's version is 61. I use a absolute path of a directory on avio_open_dir but it's failed, and return -40. I use av_err2str got Function not implemented. What problem it is? extern "C" #include int main() av_log_set_level(AV_LOG_DEBUG); auto dir = "D:\\\\music"; AVIODirContext* dirCtx; auto ret = avio_open_dir(&dirCtx, dir, nullptr); if (ret < 0) av_log(nullptr, AV_LOG_ERROR, "Can't open %s: %s\\n", dir, av_err2str(ret));  (...)
• 09:49
  Recommendations for Open Source Webinar Platforms Supporting 1000+ Users [closed] - Firas Ben said Newest 'ffmpeg' Questions - Stack Overflow
  I am looking for an open-source webinar platform capable of hosting 1000+ concurrent users. My primary requirements are: Scalability to handle large audiences seamlessly. Support for features like video streaming, screen sharing, and chat functionality. Compatibility with modern technologies such as RTMP and HLS. Extensibility to integrate with other tools or APIs. I’ve come across platforms like BigBlueButton but it cannot handle a great number of users in a session, so I’d like to know if there are other options (...)
• 09:11
  Creating an HLS audio playlist from multiple .mp3 files - tamirg Newest 'ffmpeg' Questions - Stack Overflow
  I have a list of .mp3 audio files, and i would simply like to create an HLS playlist from those files. I tried to manually create a m3u8 playlist file. for example: #EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:10 #EXT-X-MEDIA-SEQUENCE:0 #EXTINF:10.0, audio_1.mp3 #EXTINF:10.0, audio_2.mp3 #EXTINF:10.0, audio_3.mp3 #EXTINF:10.0, audio_4.mp3 #EXTINF:10.0, audio_5.mp3 But when doing so, if i simply play that playlist with ffmpeg, the first file being played is audio 4 for some reason, and there also a millisecond of (...)

27 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:20
  How to set PTS value to .mp4 video frames without losing video quality - Goan Newest 'ffmpeg' Questions - Stack Overflow
  I have searched for a solution to this problem for a while now, and tried many different approaches without any success. I have an .mp4 video (no audio) in 30Hz along with a text file timestamps.txt containing exact timestamps for each frame of the video. My goal is to embed the timestamps into the frames metadata without losing video quality. E.g. the current video timestamps (which is exactly 30Hz): 0.0333 0.0666 0.0999 ... I aim to embed exact timestamps such as (which could yield e.g. 29.94Hz): 0.0313 0.0656 0.0975 ... I (...)
• 08:33
  Extract just the audio link from a youtube video without converting - MR-4O4 Newest 'ffmpeg' Questions - Stack Overflow
  I know there are hundreds of sites to convert youtube video to mp3. Most of them do it by first downloading the video and then converting it to mp3(or any other audio format) on their server using youtube-dl, ffmpeg or similar programs. What I want to know is, is there any way I can just extract the audio link for any youtube video? I don't know if it's possible but I saw a couple of websites doing it . First Website : Openaisearch.com This website simply gives a download link for the audio(getting it from youtube videos). I searched for a song and saw (...) -- Openaisearch.com, http://keepvid.com/?url=https://www.youtube.com/watch?v=PT2_F-1esPk

26 janvier

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 16:55
  ffmpeg memory usage, or memory leaks - happycoding-boy Newest 'ffmpeg' Questions - Stack Overflow
  I'v write a simple program to get audio waveform data, which using ffmpeg version 6.1. And program works fine. But I get a problem: when program running at begin, system report using about 6MB memory, but when I call the function and cleanup the resouce alloced, system report about 9MB memory used. In my theory, after cleanup, it should be 6MB again. [I'm sure, I freed the AVPacket when read stream, and AVFrame for decoding.] My question is: Is this normal or not? int main(int argc, char *argv[]) // breakpoint here: ~= 6MB get_audio_waveform(); // (...)
• 17:58
  No Audio in Recorded File from IP Camera using ffmpeg - LeXela-ED Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to record video and audio from an IP camera equipped with a microphone. Below is a simplified version of my code, which compiles and runs without errors: #include #include #include #include #include #define AUDIO_CODEC "aac" void log_error(const char *message, int error_code) char error_buffer[AV_ERROR_MAX_STRING_SIZE]; av_strerror(error_code, error_buffer, sizeof(error_buffer)); fprintf(stderr, "%s: %s\\n", message, error_buffer); exit(1); int main(int argc, char *argv[]) const char (...)