500 posts

17 May

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

10:12
FFMPEG - colorkey - Acnologla Newest 'ffmpeg' Questions - Stack Overflow

i am using the following command to remove chroma key: ffmpeg -i black.png -i video.mp4 -filter_complex '[1:v]colorkey=0x70d021:0.35:0.15[ckout];[0:v][ckout]overlay[out]' -map '[out]' video-.mp4 but it results in these strange things around her original video Out video -- original video, Out video
10:00
What are all of the file extensions supported by FFmpeg - zjevander Newest 'ffmpeg' Questions - Stack Overflow

How would I go about getting a list of all the file extensions supported by FFmpeg for use in an ExtensionFilter used by FileChooser in JavaFX? I am familiar with the "-codecs" and "-formats" options from FFmpeg, but these list the format and codec names which do not necessarily coincide with their file extensions. e.g. (partial output from "ffmpeg -formats") D aac raw ADTS AAC (Advanced Audio Coding) DE ac3 raw AC-3 E matroska Matroska parsing aac and ac3 from the output of ffmpeg would work fine to create file extensions for those (...)
09:28
Convert a bash script to Windows bat script [closed] - gyandoo Newest 'ffmpeg' Questions - Stack Overflow

I have a bash script, now I need to convert it to bat. What the script does is based on the shortcut the script checks the audio codec and video codec using ffprobe and then loops through all the files in the folder to convert the file(s) using the presets based on which one the shortcut calls. It also limits the processor usage before running ffmpeg. Here's the script: #!/bin/sh FILES="/home/red/Downloads/to_convert/*" to_convert="/home/red/Downloads/to_convert" TYPE="$1" #echo "$TYPE" if [ -e '/tmp/convert.txt' ]; then echo (...)
03:46
ffmpeg: Apply a time-based expr to control intensity of lowpass, highpass, aphaser, or aecho [closed] - Wes Modes Newest 'ffmpeg' Questions - Stack Overflow

I am procedurally constructing complexFilters for ffmpeg via fluent-ffmpeg. My fluent-ffmpeg complex filters look like: "filter": "volume", "options": "volume": "min(1, max(0, ((cos(PI * t * 1 / 13) * 1 + cos(PI * t * 1 / 7) * 0.5 + cos(PI * t * 1 / 3) * 0.25) + -0.5 ) * 0.75 * -1 + 0.5))", "eval": "frame" , "inputs": "track_1_output", "outputs": "track_1_adjusted" , Note that I am using an expression to determine the volume dynamically. Here I'm testing on the command line, to understand the (...)

16 May

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

22:13
Making a video with opencv and ffmpeg. How to find the right color format? - luc Newest 'ffmpeg' Questions - Stack Overflow

I have a webcam video recorder program built with python, opencv and ffmpeg It works ok except that the color of the video is more blue than the reality. The problem seems to come from color format of images. It seems that OpenCv is giving BGR images and ffmpeg+libx264 is expecting YUV420p. I've read that YUV420p correspond to YCbCr. opencv has no conversion from BGR to YCbCr. It only has a conversion to YCrCb. I have made some searchs and tried different alternatives to try converting opencv image to something that could be ok for (...)
20:42
LL-HLS (CMAF/fMP4) minimize latency with FFplay - DanielB6 Newest 'ffmpeg' Questions - Stack Overflow

How do I minimize latency when streaming LL-HLS (CMAF/fMP4) via FFplay? I configured a live video stream which is broadcast from a media server using LL-HLS. I see the following results: HLS.js: ~2 seconds behind the source FFplay (./ffplay "https:////playlist.m3u8"): ~8 seconds behind the source FFplay (./ffplay -fflags nobuffer -flags low_delay -strict experimental "https:////playlist.m3u8"): ~5 seconds behind the source My goal is to achieve what HLS.js can achieve in a browser, ~2 seconds behind the (...)
17:34
Generating timestamps in webm transport stream with ffmpeg - Vlad Feinstein Newest 'ffmpeg' Questions - Stack Overflow

I am recording screen capture of my Electron app to a file, as suggested here: Save captured video to file in Electron It works great, but the file is a “transport stream”. I can play it in Chrome browser, but can’t adjust the time slider. The suggestion was to use ffmpeg to post-process the file. The simplest, straight-forward command I found is: ffmpeg -fflags +genpts -i in.webm out.webm I thought that this simply generates timestamps. However, the out.webm file is 15 times smaller than in.webm! I don’t see any change in the quality. The downside is - the (...)
18:44
How do I configure codec parameters for a RTSP stream? - Kermit Newest 'ffmpeg' Questions - Stack Overflow

I am trying to stream a network camera source into /dev/video0. However, all attempts keep telling me I have set incorrect codec parameters. Any suggestions? # works ffplay rtsp://admin:passwordⓐ172.16.0.184:554/live Then trying any of these to feed into /dev/video0 (valid from list of ls /dev/video*): ffmpeg -rtsp_transport tcp -i "rtsp://admin:passwordⓐ172.16.0.184:554/live" -c:v rawvideo -pix_fmt yuv420p -f v4l2 /dev/video0 Results in ffmpeg version 5.1.4-0+rpt3+deb12u1 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 12 (...)
16:21
C# server problem with FFmpeg Visual Studio 2022 - seanofdead Newest 'ffmpeg' Questions - Stack Overflow

Hello everyone I've spent countless hours on my server I'm trying to create that will share video from one stream to another client computer. That is the goal anyway. I'm using Visual Studio 2022 most recent update. Currently this is my code using System; using System.IO; using System.Net; using System.Net.Sockets; using System.Threading.Tasks; using FFmpeg.AutoGen; using NLog; public class VideoStreamServer private const int Port = 5000; private TcpListener server; private FFmpegVideoEncoder encoder; private (...) --
14:02
PHP/ffmpeg (Windows 7): - Permission Denied. Tried everything, but still doesn't work - user365465 Newest 'ffmpeg' Questions - Stack Overflow

I have a command-line PHP script that, when given the folder name as an argument when executing the script, will find all images in said folder and resize them using FFmpeg. Problem is, I always get a Permission Denied error in FFmpeg when it attempts to get at the files within the folder. This is while being on Windows 7. The big problem is that I've tried every solution that keeps popping up on the interwebs when I search for how to fix it. I've changed the settings in Avast!, did the attrib command (both as normal and "Run as Administrator") to unmark as read-only, (...)
12:51
How to stop ffmpeg remotely? - Adam Newest 'ffmpeg' Questions - Stack Overflow

I'm running ffmpeg on another machine for screen capture. I'd like to be able to stop it recording remotely. FFMPEG requires that q is pressed to stop encoding as it has to do some finalization to finish the file cleanly. I know I could kill it with kill/killall however this can lead to corrupt videos. Press [q] to stop encoding I can't find anything on google specifically for this, but some there is suggestion that echoing into /proc//fd/0 will work. I've tried this but it does not stop ffmpeg. The q is however shown in the terminal (...)
10:24
how to concat multiple files using ffmpeg - user3189881 Newest 'ffmpeg' Questions - Stack Overflow

I want to concat multiple files using ffmpeg. I have few video files, few audio files, few images and few text files. I have to concat all the files one by one. Now, I am doing on video files like this: For the videos, first I converted both the video into same resolution using this: C:/FFmpeg/bin/ffmpeg -i E:/xampp/htdocs/ffmpeg_test/v1.mp4 -f lavfi -i anullsrc -vcodec copy -acodec aac -shortest video_with_silence.mp4 Then this command: C:/FFmpeg/bin/ffmpeg -i E:/xampp/htdocs/ffmpeg_test/output3.mp4 -i E:/xampp/htdocs/ffmpeg_test/output2.mp4 (...)
06:54
ffmpeg Unrecognized option 'preset' [closed] - Lalaluye Newest 'ffmpeg' Questions - Stack Overflow

Hello I just recently upgraded ffmpeg from 4.3.1 to 7.0 and getting the following error: my command is ffmpeg -y -f image2pipe -framerate 24 -i pipe: -c:v libx264 -preset veryfast -crf 29 -pix_fmt yuv420 and getting the below error: 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) ffmpeg built with gcc 7 (GCC) 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) configuration: --prefix=/local/p4clients/pkgbuild-JklBW/workspace/src/FFmpeg/build/private/install 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) ffmpeg (...)
05:54
fluent-ffmpeg use without installation ffmpeg in Window - Vishal Kumar Newest 'ffmpeg' Questions - Stack Overflow

can I use fluent-ffmpeg library without installation of FFMPEG in my window PC. I try to use fluent-ffmpeg library without installation of ffmpeg in my PC so i am not able to mux audio with video file . so it is compulsory to install ffmpeg first in local sysytem ?
05:18
Output file not specified - Rich Madrid Newest 'ffmpeg' Questions - Stack Overflow

I have been messing around with ffmpeg working on basic mkv to mp4 conversions the last couple of days on my Mac and Windows computers. Mac was easier buy my windows desktop has a much faster OS so I wanted to do some conversions on it tonight. Got ffmpeg installed and working. After having some issues with the command prompt not finding the directory, I solved that with the following basic code to convert an mkv file to an mp4 for me: ffmpeg -i "C:\\Users\\Computer\\videos\\decade.mkv" "C:\\Users\\Computer\\Videos\\RJ videos\\Complete\\decade.mp4" I moved on to wanting to scale (...)
03:29
How FPS reduction for H264 without transcode? [duplicate] - Александр А Newest 'ffmpeg' Questions - Stack Overflow

There is a USB camera that sends H264 frames with a frequency of 30 fps in a resolution of 1920x1080, GOP size 30 or 60 (1 or 2 I frame per second depending on the camera and only P-frames), which requires throughput of about 6 mbit/s. It is necessary to reduce this to no more than 2 mbit/s. All this is done on a weak ARMv7, so the option of transcoding is extremely resource intensive, especially considering that I did not find how to do it as a GPU Mali (NanoPi Neo Core). Given that the basic functionality is performed on the framework ffmpeg, is it possible to reduce the frame (...)

15 May

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

22:11
avpriv_h264_has_reorder_num_frame error on av_send_packet - KaisoHHH Newest 'ffmpeg' Questions - Stack Overflow

I'm facing the error in the title which crashes my thread. int decode(AVPacket* pPacket) int count = 0; int response = avcodec_send_packet(_pCodecContext, pPacket); while(response >= 0) AVFrame* pFrame = av_frame_alloc(); response = avcodec_receive_frame(_pCodecContext, pFrame); This is the general structure of where I'm decoding the video into frames. I do use seek_frame to change position around avstream to get different frames with this: avformat_seek_file(_pFormat, -1, INT64_MIN, location, INT64_MAX, (...)
21:22
ffmpeg: PNGs to mp4 video is strange scaled quicktime - v_b Newest 'ffmpeg' Questions - Stack Overflow

I am trying to create a video from multiple PNG files. The files contain an animation of a line. However, the output MP4 video looks really strange, as if the content is stretched or scaled. Below, you can see screenshots of one of the PNG files and the resulting video file. Some additional information: I am on a MacPro M3 w. latest MacOs updates. The images have transparent backgrounds. Command: ffmpeg -framerate 30 -pattern_type glob -i "*.png" -s:v 1600x800 -pix_fmt yuv420p -c:v libx264 result.mp4 Example PNG file: PNG (...) -- , ,
20:06
How do I make my discord.py bot play a sound effect? - Kronik71 Newest 'ffmpeg' Questions - Stack Overflow

My bot is supposed to be some sort of jeopardy quiz show type of bot. /joinvc makes the bot connect to the call, however, I cant seem to make the bot make noise when its in a vc. Here's some of the code: ⓐinteractions.slash_command( name="press", description="Press the button" ) async def press(ctx: interactions.ComponentContext): await ctx.send(f"ctx.author.mention has pressed the button") vc = ctx.author.voice.channel player = vc.create_ffmpeg_player('audiopath', after=lambda: print('done')) player.start() (...)
18:32
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 (...)
12:27
Is there a way to concatenate mp4 video files in ffmpeg without video resolution switching? [closed] - Micery999 Newest 'ffmpeg' Questions - Stack Overflow

So i tried this command from windows (echo file 'first file.mp4' & echo file 'second file.mp4' )>list.txt ffmpeg -safe 0 -f concat -i list.txt -c copy output.mp4 while making a batch file Then i concatenate two video's and as soon as the one video ended. It changes resolution, then the video player started to glitch out pixel's like in vlc. Even if i typed ffmpeg -safe 0 -f concat -i list.txt -vf scale=640:360 -c copy output.mp4 Nothing (...)
11:49
How to stream webcam video over RTSP using ffmpeg on Windows 10? [closed] - let me down slowly Newest 'ffmpeg' Questions - Stack Overflow

I am trying to stream my laptop's webcam using RTSP protocol using ffmpeg. I am trying to simulate an actual IP Camera. I have already tried different tools already including using VidGear python package, and gstreamer but could not get it working. Note: I am on Windows 10. I have tried this command: ffmpeg -f dshow -s 320x240 -rtbufsize 2147.48M -r 30 -vcodec mjpeg -i video="HD Camera" -f rtsp -rtsp_transport tcp rtsp://localhost:8554/mystream It turns on the webcam with but prints these logs to the console: ffmpeg version 7.0-full_build-www.gyan.dev Copyright (c) (...)
13:41
The system cannot find the file specified with ffmpeg - Samhita vempatti Newest 'ffmpeg' Questions - Stack Overflow

In the process of using the ffmpeg module to edit video files i used the subprocess module The code is as follows: #trim bit import subprocess import os seconds = "4" mypath=os.path.abspath('trial.mp4') subprocess.call(['ffmpeg', '-i',mypath, '-ss', seconds, 'trimmed.mp4']) Error message: Traceback (most recent call last): File "C:\\moviepy-master\\resizer.py", line 29, in subprocess.call(['ffmpeg', '-i',mypath, '-ss', seconds, (...)
13:16
'ffmpeg' is not recognized as an internal or external command, operable program or batch file [closed] - Mark S. Newest 'ffmpeg' Questions - Stack Overflow

I am trying to convert group of images .png to video .webm on Windows 10: ffmpeg -i %03d.png output.webm But I am getting this error: 'ffmpeg' is not recognized as an internal or external command, operable program or batch file.
12:48
Flutter: How to use "ffmpeg_kit_flutter" to merge videos? - Hani Kanakri Newest 'ffmpeg' Questions - Stack Overflow

i am using "ffmpeg_kit_flutter" to merge two videos with code import 'dart:io'; import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart'; import 'package:ffmpeg_kit_flutter/abstract_session.dart'; import 'package:ffmpeg_kit_flutter/return_code.dart'; import 'package:flutter/material.dart'; import 'package:flutter_bloc/flutter_bloc.dart'; import 'package:wechat_assets_picker/wechat_assets_picker.dart'; import (...)
11:15
Multiples Cameras Rttsp to HLS [closed] - Dark Dragon Newest 'ffmpeg' Questions - Stack Overflow

Is it possible to create a media server that will have just one endpoint that will receive several requests with camera protocols, and this server must return the stream from these cameras formatted? Knowing that the front end will take these camera streams and place them in the browser I Still searching about the subject
12:21
Problems with Python's azure.cognitiveservices.speech when installing together with FFmpeg in a Linux web app - Kakobo kakobo Newest 'ffmpeg' Questions - Stack Overflow

I need some help. I'm building an web app that takes any audio format, converts into a .wav file and then passes it to 'azure.cognitiveservices.speech' for transcription.I'm building the web app via a container Dockerfile as I need to install ffmpeg to be able to convert non ".wav" audio files to ".wav" (as azure speech services only process wav files). For some odd reason, the 'speechsdk' class of 'azure.cognitiveservices.speech' fails to work when I install ffmpeg in the web app. The class works perfectly fine when I install it without ffpmeg (...)
08:34
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 (...)
06:43
adding one video after certain time and - Jaga G Newest 'ffmpeg' Questions - Stack Overflow

I have two videos. If one video length is 42 minutes 35 seconds and another video length is 46 seconds, now I need to add this 46 second video after every three minutes 50 seconds so that the added video should be exported as a separate video. After every three minutes and 50 seconds, those 46 seconds of video should be added and a separate video should be exported. This should be done for a total of 42 minutes and 35 seconds of video. Does this happen in FFMPEG? how to add the (...)

14 May

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

16:10
ffmpeg : fps drop when one -map udp output unreachable [closed] - user25041039 Newest 'ffmpeg' Questions - Stack Overflow

I stream a video from a raspberry pi (server) to a splitscreen of 5x5 devices (clients) through an ethernet LAN. Server On the server side, I use the following ffmpeg command that : reads a video list in loop; splits it into 25 different streams; maps each stream to a device through udp. I also have several options to minimize latency and keep the different subscreens in sync. ffmpeg -loglevel repeat+level+verbose -re -copyts -start_at_zero -rtbufsize 100000k \\ -stream_loop -1 -f concat -i stream.lst -an \\ -filter_complex "\\ (...)
16:08
FPS reduction for H264 [closed] - Александр А Newest 'ffmpeg' Questions - Stack Overflow

There is a USB camera that sends H264 frames with a frequency of 30 fps in a resolution of 1920x1080, GOP size 30 or 60 (1 or 2 I frame per second depending on the camera and only P-frames), which requires throughput of about 6 mbit/s. It is necessary to reduce this to no more than 2 mbit/s. All this is done on a weak ARMv7, so the option of transcoding is extremely resource intensive, especially considering that I did not find how to do it as a GPU Mali (NanoPi Neo Core). # ./ffmpeg -hide_banner -codecs | grep h264 DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: (...)
19:17
"No accelerated colorspace conversion found from yuv420p to bgr24" when using OpenCV with FFMPEG on mac - Itay k Newest 'ffmpeg' Questions - Stack Overflow

When trying to acquire a frame from a video file (I've tried several video formats) I am getting an error message "No accelerated colorspace conversion found from yuv420p to bgr24". The exact same code ran perfectly fine on a windows machine and I couldn't get it to run on a mac even after I recompiled and installed FFMPEG and OpenCV. I am using lion for my OS. Any ideas?
16:38
How to move overlayed image on video in ffmpeg - hatlan Newest 'ffmpeg' Questions - Stack Overflow

I overlayed an image on video with: ffmpeg -i video.mp4 -vf "movie=image.png[layer]; [layer]scale=1000:-1[layer2];[in][layer2]overlay=128:enable='between(t,0,20)'" -c:a copy output.mp4 By overlay=128an image moves vertically. How can I move an image horisontally too?
17:15
Merge videos on computer automatically - Skyturkish Newest 'ffmpeg' Questions - Stack Overflow

I have some videos regularly downloaded to my computer, these are short videos, around 10-15 seconds each. I usually use https://online-video-cutter.com/merge-videos to merge them, and it serves my purpose well. I just drag and drop the videos I want and hit the download button without any additional steps. My goal is to automate this process, so I thought I could merge the videos locally on my computer using ffmpeg. I've tried with JavaScript libraries like ffmpeg-static and ffmpeg-fluent, but I couldn't get the desired result; I keep encountering an error. What I (...) -- https://online-video-cutter.com/merge-videos
15:35
Getting "unable to decode APP fields" while playing USB webcam stream through ffplay - Syed Newest 'ffmpeg' Questions - Stack Overflow

I am trying to play USB Webcam stream(not sure in which format it is..) using ffplay in windows. I can see the video without any issue, But I am keep getting below error in console. ffplay.exe -f dshow -i video="Logitech HD Webcam C615" -loglevel debug [mjpeg ⓐ97a118cc80] unable to decode APP fields: Invalid data found when processing input check logs for more details Do I really need to worry about this error? Or any filter that I need to provide in command to get ride of this error . Note: I tried to save stream to a file using (...) -- check logs for more details
11:48
How to batch process with ffmpeg script, but do each step in a loop instead of two stages - Matt Newest 'ffmpeg' Questions - Stack Overflow

I'm a novice script editor. I convert MOV/AVI video files to MP4 format using a script with ffmpeg and then move the files after processing: for f in *.mov; do ffmpeg -y -i "$f" "$f%.mp4"; done mv -f *.mov /Users/me/Videos/mov mv -f *.MOV /Users/me/Videos/mov mv -f *.avi /Users/me/Videos/avi mv -f *.AVI /Users/me/Videos/avi Currently the script converts all videos, then moves them all to the other folders. Please how can the script be adjusted so that each video is moved immediately after processing (instead of waiting until all are complete)? (...)
11:37
Seeking Ideas: How Can I Automatically Generate a TikTok Video from a Custom Song Using C# [closed] - Jamado Newest 'ffmpeg' Questions - Stack Overflow

Im creating a c# program which creates a video of the from a song and posts it on tiktok. Right now my program Uses spleeter to split the song into stems uses a script of GitHub to create waveform images of the stems I want my end video to look like this: https://vm.tiktok.com/ZMM7CDmUt/ - only one song will play per video https://vm.tiktok.com/ZMM7Xdw8b/ https://vm.tiktok.com/ZMM7CcGtE/ - no webcam or that hitting animations basically I want the stems of the songs to be placed on top of a FL studio timeline, synced to the song, (...) -- https://vm.tiktok.com/ZMM7CDmUt/, https://vm.tiktok.com/ZMM7Xdw8b/, https://vm.tiktok.com/ZMM7CcGtE/, https://gist.github.com/Neurogami/aeed8693f7ac375d5e013b8432d04d3f
04:04
Why every audio part is louder in FFmpeg when I join them in one audio? - Volodymyr Bilovus Newest 'ffmpeg' Questions - Stack Overflow

I trying to make dubbing for audio. I have original audio track and I want to put translated audio parts on top of the original. translated audio 100% vol: --p1--- ---p2-- -----p3--- --p4-- original audio 5% vol: ----------------------------------------- Here is my FFmpeg command with filter_complex ffmpeg -i video_wpmXlZF4XiE.opus -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 \\ -filter_complex "\\ [0:a]loudnorm=I=-14:TP=-2:LRA=7, volume=0.05[original]; \\ [1:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=5000|5000, volume=1.0[sent1]; (...) --
02:59
ffmpeg problem video duration of an hour and a half - Bruno Munné Newest 'ffmpeg' Questions - Stack Overflow

When start record i call an api /start-record which does: const ffmpeg = spawn("ffmpeg", [ "-i", rtsp, "-c:v", "copy", "-an", "-f", "flv", `$filename.flv`, ]); ffmpegProcesses[rtsp] = process: ffmpeg, filename, ; When stop the record i call an api /stop-record which does: ffmpegProcesses[rtsp].process.kill("SIGKILL"); ffmpegProcesses[rtsp].process.on("exit", async () => const ffmpeg = spawn("ffmpeg", [ "-i", `$filename.flv`, "-c:v", "libx264", "-preset", "fast", (...)

13 May

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

02:18
How to encode mp4 so that Apple devices can stream VP9 encoded Videos via fmp4 HLS? [closed] - Leon S Newest 'ffmpeg' Questions - Stack Overflow

The question is in the title... I have not figured it out, obviously Youtube has achieved that, but how could i do it in my own app so that i can effectively stream vp9 encoded content in my app. Would be great to get a solution, maybe some ffmpeg settings or something like that? I know that it is officially not supported, but everywhere i look they say that it is still possible, and even "quite easy", e.g. here: https://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=133907 Trief multiple fmp4 encodings so far for vp9 but neither my app player nor safari (...) -- https://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=133907
21:33
How to fix "Cannot find a valid font for the family Sans' while adding text on image using react-native-ffmpeg - coffee Newest 'ffmpeg' Questions - Stack Overflow

I am trying to add text on image using the code below RNFFmpeg .execute(`-y -i $input -vf "drawtext=text='Hello World':fontcolor=white:fontsize=75:x=0:y=0" $output`); I am not using any custom font but still get this error. Error: [Parsed_drawtext_0 ⓐ 0x7f87a1ce40] Cannot find a valid font for the family Sans index.js:115 [AVFilterGraph ⓐ 0x7f6765e760] Error initializing filter 'drawtext' index.js:115 [AVFilterGraph ⓐ 0x7f6765e760] with args 'text=Hello World:fontcolor=white:fontsize=75:x=0:y=0' index.js:115 [AVFilterGraph (...)
20:47
Nix package: Pass build flag --extra-cflags to ffmpeg at compile time - catleeball Newest 'ffmpeg' Questions - Stack Overflow

I'm a little inexperienced with Nix and NixOS and am struggling a bit with this ffmpeg source build. Any advice is appreciated! Goal Build ffmpeg from source with --extra-cflags="-pipe -O3 -march=znver3 -ffat-lto-objects", ideally using a flake or overlay or similar so that I can build off the existing ffmpeg nix package and maybe even reproducible builds. Attempts I've been trying to follow different advice I've seen online, but looking at ffmpeg in nixpkgs, I'm not sure what I could patch or override. Since configureFlags happens inside the (...) -- ffmpeg in nixpkgs, configureFlags, this github repo
20:04
D3D11 hardware screen recording with ffmpeg using Intel H264 QSV hardware encoding - Cactus Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to screen record using ffmpeg and having it all done via hardware on my Intel integrated graphics. Specs For reference, here are my specs: Windows 11 Pro Version 10.0.22631 Build 22631 Model: Dell Inc. OptiPlex 3090 Processor: 11th Gen Intel(R) Core(TM) i3-1115G4 ⓐ 3.00GHz, 2995 Mhz, 2 Core(s), 4 Logical Processor(s) Terminal: Windows Terminal using Windows Powershell In this wiki, it looked like I could use the "Windows 8+ Desktop Duplication API" to be "directly encoded by a compatible hardware encoder" — so I thought that I (...) -- wiki, page
15:57
Why every audio part louder in FFmpeg while I join them in one audio? - Volodymyr Bilovus Newest 'ffmpeg' Questions - Stack Overflow

I trying to make dubbing for audio. I have original audio track and I want to put translated audio parts on top of the original. translated audio 100% vol: --p1--- ---p2-- -----p3--- --p4-- original audio 5% vol: ----------------------------------------- Here is my FFmpeg command with filter_complex ffmpeg -i video_wpmXlZF4XiE.opus -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 \\ -filter_complex "\\ [0:a]loudnorm=I=-14:TP=-2:LRA=7, volume=0.05[original]; \\ [1:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=5000|5000, volume=1.0[sent1]; (...) --
15:32
ffmpeg python error when adding subtitles - Clara Ogalla Newest 'ffmpeg' Questions - Stack Overflow

When I run it I think there is an error with the subtitle path, but I can't solve it. The error in terminal: [Parsed_subtitles_0 ⓐ 0000019bcc509780] Unable to parse option value "UsersclaraDocumentsProyectosSubtitulossubtitulosDoctor Who - 1x05 The Keys Of Marinus - Part 6 The Keys Of Marinus_track4_spa.srt" as image size Error applying option 'original_size' to filter 'subtitles': Invalid argument [vost#0:0/libx264 ⓐ 0000019bce220480] Error initializing a simple filtergraph Error opening output (...)
14:12
sending video issue whatsapp-web.js - Shahar Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to send an mp4 video as a sticker but i get an error, here's my code client.on("message", (message) => const media = MessageMedia.fromFilePath("./vid.mp4"); client.sendMessage(message.from, media, sendMediaAsSticker: true ); but I get this error handleExit(new Error('ffmpeg exited with code ' + code)); ^ Error: ffmpeg exited with code 1: pipe:0: Invalid data found when processing input Cannot determine format of input stream 0:0 after EOF Error marking filters as finished Conversion (...)
11:08
"fixing" RTL texts from logical to visual, before embedding in video as subtitles with ffmpeg - Berry Tsakala Newest 'ffmpeg' Questions - Stack Overflow

I'm searching for the correct way to pre-process my subtitles files before hard-coding them into video clips. Currently, ffmpeg does not process RTL (right-to-left) languges properly; I have detailed the problem here: https://superuser.com/questions/1679536/how-to-embed-rtl-subtitles-in-a-video-hebrew-arabic-with-the-correct-lan However, there could be 2 programmatic solutions: adding certain unicode control characters can fix (or partially fix) the text, which is then fed into ffmpeg, giving good results. character 0x200F at the end of a hebrew (...) -- unicode control characters
09:15
How do I add environment variables to path in python? - JustThisWeeb Newest 'ffmpeg' Questions - Stack Overflow

I made a python script to install FFmpeg and add it to path in Windows, but it seemed to have no effect at all. It doesn't give me any errors or anything. It literally just does nothing at all. This was the code I used: os.environ["Path"] += f"os.getcwd()/ffmpeg-7.0-essentials_build/bin" os.environ.update() and I tried several iterations of "path" including "PATH", "Path", "path" and none of them made a difference. I also tried making a new variable: new_environ = os.environ["Path"] + (...)
06:11
Getting "TypeError: must be real number, not NoneType" whenever trying to run write_videofile to a clip in moviepy - Sato Newest 'ffmpeg' Questions - Stack Overflow

Example code: from moviepy.editor import * clip = VideoFileClip('video.mp4') clip.write_videofile('video2.mp4', fps=30) After showing the following messages, showing that the video is being built and written, Moviepy - Building video video2.mp4. Moviepy - Writing video video2.mp4 The following error message occurs: Traceback (most recent call last): File "", line 1, in File "C:\\Users\\User\\Anaconda3\\lib\\site-packages\\decorator.py", line 232, in fun return caller(func, *(extras + args), **kw) File (...)

12 May

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

16:36
Adding Dynamic Progress Bar to FFMpeg Video Output (Mac) [closed] - saurav tripathi Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to add a dynamic progress bar to the bottom of a video using ffmpeg on my Mac. Here's the command I'm currently using: ffmpeg -i "/Volumes/hard-drive/Auto-pilot-video/upload-ready-video/one-two-ka-four.mp4" -filter_complex \\ "[0:v]drawbox=y=ih-20:color=yellowⓐ0.5:width=iw*(t/606.15):height=20:t=fill[v]" \\ -map "[v]" -map 0:a -c:a copy -preset fast output.mp4 Question: As you can see in the image right now, it just a fixed yellow bar at the bottom of the screen. But instead of just fixed at bottom I want a dynamically moving bar at (...) --
14:32
I am unable to decode the frames in python using ffmpeg [closed] - Saail Chavan Newest 'ffmpeg' Questions - Stack Overflow

import pylwdrone import cv2 import numpy as np # Initialize the LWDrone object drone = pylwdrone.LWDrone() # Start the video stream for packet in drone.start_video_stream(): try: # Print the size of the frame data print("Packet frame bytes size:", len(packet.frame_bytes)) # Print a portion of the frame data (first 100 bytes) print("First 100 bytes of frame data:", packet.frame_bytes[:100]) # Convert the frame data to numpy array frame = np.frombuffer(packet.frame_bytes, dtype=np.uint8) # Get the (...)
18:45
piping data into an ffmpeg subprocess. Why does write() get stuck? [closed] - Tebyy Newest 'ffmpeg' Questions - Stack Overflow

It displays the number of frames at the beginning and shows that there are over 300, but when I count all the frames in the loop, the last one I see is 53, and then it only displays the value of 'ret', which is always true. I'm wondering what could be causing this issue of not reading all the frames, resulting in the file not being closed after reading. From what I've read, 'ret' should return false when there are no more frames to read, but because it's not reading all the frames, this isn't happening. Does anyone have any idea what could be (...) -- Tested Video
11:28
Pyzam gives an error, Pyzam does not work. [red]Error: ffmpeg file not found in $PATH[/red] [duplicate] - Да не знаю я Newest 'ffmpeg' Questions - Stack Overflow

I wanted to make a program that defines music, well, like shazam. I came across Pyzam. I tried it, it doesn't work. Returns the error: [red]Fatal: ffmpeg not found on $PATH[/red] to the command: pyzam -- input mando.mp3. There is a mando.mp3 file in the folder where I run the program. I write the command on the command line. Windows 10. FFmpeg is available on disk C from the official website.
14:11
How to apply --speed flag for ffmpeg-kit in React Native (Expo)? - Michota Newest 'ffmpeg' Questions - Stack Overflow

Where do i place speed flag? Currently my plugins look like this "plugins": [ [ "ⓐconfig-plugins/ffmpeg-kit-react-native", "package": "min-gpl" ] ], I use expo sdk 51. I've tried placing it next to package name, but it didn't work. -- speed
14:26
Convert m3u8 file to mp4 file in React Native Expo - DRx Newest 'ffmpeg' Questions - Stack Overflow

How can I convert m3u8 file to mp4 file in React Native Expo? I have tried to convert m3u8 file to mp4 using FFmpegKit but I have this errors: 'Cannot read property 'getLogLevel' of null' and 'Cannot read property 'ffmpegSession' of null' Also building with this package failing (Could not determine the dependencies of task ':ffmpeg-kit-react-native:compileDebugAidl'.). Is there a simple and easy way to convert m3u8 file in React Native Expo? Code I have used: import FFmpegKit from (...)
12:08
python ffmpeg configuration for command - RobyJ Newest 'ffmpeg' Questions - Stack Overflow

I want to convert mp3 files to mp3 but with my settings. Could someone help me to create python code or a command for cmd to perform such action with ffmpeg? I have hundreds of mp3 files so I need to automate it. Settings are in below picture. I tried myself to configure it, but I had problems with finding in ffmpeg docs information about bit rate mode and quality settings. --
10:37
FFmpeg image swipe animation - zetrabit Newest 'ffmpeg' Questions - Stack Overflow

I want to animate with ffmpeg as in the picture. The animation must be 3 seconds long. Zoom in for 0.5 seconds at the beginning of the video Swipe left for 1 second Swipe right for 1 second Zoom out for 0.5 seconds. I have a 3 images. Is this possible? i'am tryging ffmpeg (python or php or msdos) >Example image -- Example image
09:47
ffmpeg - I want to concat multiple videos (front / rear) with overlay and one second delay - Andrej Florjančič Newest 'ffmpeg' Questions - Stack Overflow

I try to write bash script to concat front and rear video files with delay 1 second at start and overlay rear over front. I wrote the following bash script: # Define the output file output_file="$VIDEO/final_output_$choice.mp4" # Collect and sort the video files front_files=( $(ls *_F.MP4 | sort) ) rear_files=( $(ls *_R.MP4 | sort) ) # Create a file to hold ffmpeg input commands and filter scripts input_list="input_files.txt" filter_script="filter_complex.txt" inputs="" # Clear the input list and filter script files echo "" > (...)
00:27
Error loading trimmed video produced by FFMPEG - Bryan Carty Newest 'ffmpeg' Questions - Stack Overflow

I've been trying to trim a video using FFMPEG within some javascript code. The code executes without throwing any errors. try const command = `ffmpeg -i $ CROPPING_DIR + CROPPED_VIDEO_PREFIX + id + ".mp4" -ss 00:00:04 -to 00:00:06 -c copy $ CROPPING_DIR + TRIMMED_VIDEO_PREFIX + id + ".mp4" `; console.log(command); const stdout, stderr = await exec(command); return "NA"; catch (error) console.error("Error executing ffmpeg command:", error); In VsCode, I am unable to view the (...)

11 May

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

23:17
Losslessly Split Videos by Size [closed] - user1897354 Newest 'ffmpeg' Questions - Stack Overflow

How do I losslessly split videos by file size? For example, I have a 1.92GB video and I want to split it into 200MB videos. I tried using ffmpeg and putting in -fs, -c copy, and 200000000 for 200MB, but I only got one file that's not even the correct file size. How do I properly use it?
15:24
How to stream only a part of a video without downloading the whole thing? - Abbas Newest 'ffmpeg' Questions - Stack Overflow

I am building a YouTube video trimmer, and currently, it takes the YouTube video ID, downloads the whole video from the server (Even it is like 10 hours long), and then it trims it according to user's inputted timeframe using ffmpeg. Now the problem with this is that it takes so much time to download the whole video even if we want a small piece of it hence it is highly impractical. I was thinking to implement something like an HTML5 video player does when you seek the video forward. It just jumps to the part where you seek-ed to without downloading the part you skipped (...)
11:11
Xvfb records a black screen - Vivek Newest 'ffmpeg' Questions - Stack Overflow

I am trying a record a video by running xvfb inside a docker image. No matter what I do it gives me black screen. Screen size same in xvfb and ffmpeg and puppeteer. It will would really great if someone can help. start-xvfb.sh --------------------------------------------------------------------- # Start Xvfb Xvfb :99 -screen 0 1280x720x24 & # Set the display environment variable export DISPLAY=:99 # Run the application (assuming it starts with npm start) npm run dev Dockerfile FROM node:lts-alpine3.19 # (...) --
07:41
"undefined reference to av···ⓐ···"ffmpeg error，when i cross compile opencv4.5.3 which include ffmpeg lib - caiping Peng Newest 'ffmpeg' Questions - Stack Overflow

everyone,It is sorry to bother you,but i need some help. I'm working on an embedded deployment project,doing object detection work to real-time video stream. So I have to port my c++ inference prog to RKNN1808 platform. I compile this program with CMake tool,but I cant finish my work because opencv lib cant be compiled rightly. To FFmpeg,my configure commend is following: ./configure --enable-cross-compile --cross-prefix=/home/midsummer/Tool/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- --target-os=linux --arch=aarch64 (...)
06:03
Using chunks of MP4 file for thumbnails - Moritz Mahringer Newest 'ffmpeg' Questions - Stack Overflow

I want to extract single frames (as thumbs) from videos, without having to download the full video file. I would like to just read the mp4 header (the info should be in the moov atom) and then download the required byte ranges. Afaik thats what browsers (HTML5 video) do when you skip to an unbuffered part I already looked at: How can HTML5 video's byte-range requests (pseudo-streaming) work? but i can't figure out how to use it with ffmpeg for example. Thanks a (...)
03:19
FPS reduction for H264 [closed] - Александр А Newest 'ffmpeg' Questions - Stack Overflow

There is a USB camera that sends H264 frames with a frequency of 30 fps in a resolution of 1920x1080, GOP size 30 or 60 (1 or 2 I frame per second depending on the camera), which requires throughput of about 6 mbit/s. It is necessary to reduce this to no more than 2 mbit/s. All this is done on a weak ARMv7, so the option of transcoding is extremely resource intensive, especially considering that I did not find how to do it as a GPU Mali. Given that the basic functionality is performed on the framework ffmpeg, is it possible to reduce the frame rate, ideally to 10 fps, WITHOUT loss of (...)
03:05
OpenEncodeSessionEx failed: no encode device (1): (no details) - Jayce Li Newest 'ffmpeg' Questions - Stack Overflow

I'm testing the ddagrab filter with this command line: ffmpeg -f lavfi -i ddagrab -c:v h264_nvenc -cq 18 -v 40 -t 10 -y out.mp4 FFmpeg exits with this error message: OpenEncodeSessionEx failed: no encode device (1): (no details) My laptop has Nvidia Geforce GTX 1050 Ti, Driver version 527.37. Windows 10 Home, Version 22H2, OS build 19045.4291. DirectX version 12. This command works without problems: ffmpeg -f gdigrab -i desktop -c:v h264_nvenc -t 10 -y out.mp4 I test these command on my other laptop with Nvidia Geforce RTX 2060, Driver version (...)

10 May

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

08:52
Why doesn't the ffmpeg output display the stream in the browser? [closed] - Tebyy Newest 'ffmpeg' Questions - Stack Overflow

Why is it that when I create a livestream in Python using ffmpeg, and then I open the browser and visit the page, the page keeps loading continuously, and in PyCharm logs, I see binary data? There are no errors displayed, and the code seems correct to me. I even tried saving to a file for testing purposes, and when I play the video, everything works fine. Does anyone know what might be wrong here? Code: def generate_frames(): cap = cv2.VideoCapture(os.path.normpath(app_root_dir().joinpath("data/temp", "video-979257305707693982.mp4"))) while cap.isOpened(): ret, (...)
07:05
How to set min, max and avg bitrate or vbv delay using FFMPEG for livestream in Python? [closed] - Tebyy Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to set the minimum, maximum, and average bitrate or vbv delay for a WebM livestream in Python using FFMPEG, but it still shows "0" or "N/A". I've checked the documentation, and everything seems correct. I've also searched for solutions online, but none of them have solved my problem. Does anyone know what I might be doing wrong and how it should be done correctly? FFMPEG Command: ffmpeg_command = [ 'ffmpeg', '-f', 'rawvideo', '-pix_fmt', 'bgr24', '-s:v', '1920x1080', (...)
15:42
Edge of text clipped a few pixels in ffmpeg [closed] - THEMOUNTAINSANDTHESKIES Newest 'ffmpeg' Questions - Stack Overflow

Trying to make a short video of a background image with text and some background audio. It's functional, but the right side of each line of my text is always clipped a few pixels. What am I missing? Here's my python code (which includes the ffmpeg command): font_size = 100 text='Example Text Example Text \\n Example Text' font_path = 'Bangers-Regular.ttf' image_path = 'background.jpg' audio_path = 'audio.wav' duration = 15 #or whatever the audio's length is output_path = (...) --
20:05
Error while processing Video using Ffmpeg - Kaunain Newest 'ffmpeg' Questions - Stack Overflow

I am facing a weird error in FFMPG while doing any operation of a particular video. I did a lot of R&D but did not found any solution regarding this. Can anyone of you please look into it, it will be so kind. here is a command i am using to mute the video, but end up with the following error. fun videoMuteCmd( filePath: Uri, outputPath: String, ): Array return arrayOf( "-y", "-i", filePath.toString(), "-c", "copy", "-an", outputPath ) ERROR : LogMessageexecutionId=3010, (...)
19:50
ffmpeg does not make a video from my images - QuantumFool Newest 'ffmpeg' Questions - Stack Overflow

I've currently got some images that I'd like to display in the form of a movie. So, I pocked around a bit and found ffmpeg. This is the tutorial I have been going with: http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/ Since I don't care about reading, I skipped right to the writing section. As far as I can tell, this is what my program should say: import subprocess as sp FFMPEG_BIN = "ffmpeg" #I'm on Ubuntu command = [ FFMPEG_BIN, '-y', '-f', (...) -- http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/
16:34
Multiple mdhd? Error while processing Video - Kaunain Newest 'ffmpeg' Questions - Stack Overflow

I am facing a weird error in FFMPG while doing any operation of a particular video. I did a lot of R&D but did not found any solution regarding this. Can anyone of you please look into it, it will be so kind. here is a command i am using to mute the video, but end up with the following error. fun videoMuteCmd( filePath: Uri, outputPath: String, ): Array return arrayOf( "-y", "-i", filePath.toString(), "-c", "copy", "-an", outputPath ) ERROR : LogMessageexecutionId=3010, (...)
15:47
Live AAC and H264 data into live stream - tzuleger Newest 'ffmpeg' Questions - Stack Overflow

I have a remote camera that captures H264 encoded video data and AAC encoded audio data, places the data into a custom ring buffer, which then is sent to a Node.js socket server, where the packet of information is detected as audio or video and then handled accordingly. That data should turn into a live stream, the protocol doesn't matter, but the delay has to be around ~4 seconds and can be played on iOS and Android devices. After reading hundreds of pages of documentation, questions, or solutions on the internet, I can't seem to find anything about handling two separate (...) -- hls-parser, mux.js
09:35
FFmpeg not downloading m3u8 live streams [closed] - user24970826 Newest 'ffmpeg' Questions - Stack Overflow

maybe someone can help me. I just installed ffmpeg on my Windows 10 system. I downloaded the latest release from the gyan.dev website, and i already tried different builds too, but every time I try to download an m3u8 live stream, it gives me these errors: [tls ⓐ 00000237a151f580] Error in the pull function. [tls ⓐ 00000237a151f580] IO error: End of file [in#0 ⓐ 00000237a151ed00] Error opening input: End of file Error opening input file (...)
13:25
File conversion to mp3 returning failure everytime using flutter package ffmpeg_kit_flutter - Sanath balthar Newest 'ffmpeg' Questions - Stack Overflow

I am trying to convert a .wav audio file generated from a flutter's text to speech package - "flutter_tts" to mp3 file but it is failing everytime. I have written the below code for file conversion. I have imported the package ffmpeg_kit_flutter. It doesnt even show why the conversion is failing. I have looked up in stackoverflow and other sites but could not find any relevant solutions. I am using vscode as editor. I have attached flutter doctor output below as well. Could anyone please guide me? Let me know if you need more information. List command = [ (...)
06:48
How to find the loudness of an audio buffer in Node.js? - Parshant Khichi Newest 'ffmpeg' Questions - Stack Overflow

I have a buffer containing audio data representing a voice recording, and I need to determine its loudness in Node.js. I tried using the fluent-ffmpeg library, as it seemed to offer functionality for audio analysis. However, my attempts to use it to analyze the loudness of the audio buffers were unsuccessful. Could someone please suggest a reliable approach or provide a code example to help me analyze the loudness of the audio buffers accurately in Node.js? Any guidance or assistance would be greatly (...)
04:15
ffmpeg h264_amf on Windows 10 fails with CreateComponent(AMFVideoEncoderVCE_AVC) failed - wallllaw100 Newest 'ffmpeg' Questions - Stack Overflow

Trying to use hardware encoding with ffmpeg (version 7.0-essentials_build-www.gyan.dev) on Windows 10 Command ffmpeg -i -v verbose -c:v h264_amf -acodec copy -y Error [h264_amf ⓐ 0000014dc3388580] AMF initialisation succeeded via D3D11. [h264_amf ⓐ 0000014dc3388900] CreateComponent(AMFVideoEncoderVCE_AVC) failed with error 36 [vost#0:0/h264_amf ⓐ 0000014dc3bf7c80] Error while opening encoder - maybe incorrect parameters such as bit_rate, rate, width or height. How to resolve this (...)
03:01
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 (...)
00:04
ffmpeg input stream's fps detection bug [closed] - I have 10 fingers Newest 'ffmpeg' Questions - Stack Overflow

I have ffmpeg setup which produces rtmp stream from remote rtsp stream. The rtsp stream comes from ip camera which support multiple profiles. Each profile has 1080p 30 fps, 1080p 15 fps. The weird thing is that when ffmpeg analyze its input stream, one profile is recognized as 1 fps as below Input #0, rtsp, from 'rtsp://...': Metadata: title : Media Presentation comment : samsung Duration: N/A, start: 0.064144, bitrate: N/A Stream #0:0: Video: h264 (High), yuvj420p(pc, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1 fps, 1 tbr, 90k tbn, 2 (...)

9 May

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

19:19
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.
11:31
Reducing the Quality Loss experienced on Videos when applying Bicubic Interpolation when Upscaling? [closed] - Solomon Williams Newest 'ffmpeg' Questions - Stack Overflow

VMAF Quality Loss when applying bicubic interpolation to a video when upscaling with ffmpeg First of all, I'm a bit of a beginner to this specific topic therefore any advice would be greatly appreciated! For a project that I've currently been working on, I've been essentially trying to simulate the requirement to downscale/upscale resolution when transmitting video files using ffmpeg. During this process, I have found that whenever I've needed to upscale resolution on a transcoded file via bicubic interpolation, the resultant video will have lost more VMAF (...) -- enter image description here
20:08
Can't remove console.logs from ffmpeg-kit - effendi Newest 'ffmpeg' Questions - Stack Overflow

I need to remove all kind of logs from my android app which uses ffmpeg-kit. I commented out all the Log.xx calls in the java files and they are no longer showing up. However, I still get those: ffmpeg-kit usap64 I Loading ffmpeg-kit. ffmpeg-kit usap64 I Loaded ffmpeg-kit-video-arm64-v8a-6.0-lts-20230913. ffmpeg-kit usap64 D Async callback block started. I can see the first two are console.logs in index.js which I commented out. But they still show in the logs. Here's what I tried: remove node_modules npm install comment out all Log.xx calls in (...) -- ffmpeg-kit, index.js
19:45
FFMpeg Logo Different Sepration [closed] - unkp Newest 'ffmpeg' Questions - Stack Overflow

Simple: 1.Want a logo to be only for specific times on a video, motivation : reduce length of the process if possible. the code used for logo is this one: ffmpeg -i output0.mp4 -vf "movie=logo.png [watermark]; [watermark]scale=220x220 [watermark2];[in][watermark2] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" output0logo0done.mp4 Would Want like something like this if possible: keep the logo for 1 minute then 4 minutes later keep the logo again for 1 minute. Tried searching about this request, the answers found were related to -> split (...)
19:34
FFMpeg Logo Different Sepration [Beginner] - unkp Newest 'ffmpeg' Questions - Stack Overflow

Simple: 1.Want a logo to be only for specific times on a video, motivation : reduce length of the process if possible. the code used for logo is this one: ffmpeg -i output0.mp4 -vf "movie=logo.png [watermark]; [watermark]scale=220x220 [watermark2];[in][watermark2] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" output0logo0done.mp4 Would Want like something like this if possible: keep the logo for 1 minute then 4 minutes later keep the logo again for 1 minute. Tried searching about this request, the answers found were related to -> split (...)
16:50
Using libav libraries directly in c++ project instead of using Ffmpeg command external process [closed] - dhatchina Newest 'ffmpeg' Questions - Stack Overflow

i'm receiving input as raw H264 NAL units contiguously from one port and mp2 audio from the another port .i need to multiplex this both and encode as a mpeg2 transport stream. To achieve this now i'm executing required ffmpeg command as a process inside my c++ project and i get the output perfectly. but, the problem is i can't install ffmpeg in client system manually and i felt just for this single purpose using ffmpeg takes more cpu utilization also and handling external process also bit not reliable. so , i need to add required libav (ex: libavcodec (...)
15:52
ffmpeg's invalid input stream fps causes low latency [closed] - I have 10 fingers Newest 'ffmpeg' Questions - Stack Overflow

I have ffmpeg setup which produces rtmp stream from remote rtsp stream. The rtsp stream comes from ip camera which support multiple profiles. Each profile has 1080p 30 fps, 1080p 15 fps. The weird thing is that when ffmpeg analyze its input stream, one profile is recognized as 1 fps as below Input #0, rtsp, from 'rtsp://...': Metadata: title : Media Presentation comment : samsung Duration: N/A, start: 0.064144, bitrate: N/A Stream #0:0: Video: h264 (High), yuvj420p(pc, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1 fps, 1 tbr, 90k tbn, 2 (...)
15:34
FFMPEG not working as intended in a bash script - rcp Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to get the mean volume of a recording and the echo the expected value. When I do it line by line, everything works fine, but as soon as I execute it in a bash script, I have a problem with the FFMPEG line. I identified the problem, which is that &> analysis is not doing anything for some reason and instead of saving the output in a file it prints it in the shell. I don't know how to fix it since it works fine when not in a script. #!/bin/bash # Record sound sh aud2.sh # Run ff.sh in the background to analyze volume and save (...) -- Expected output when line by line, Actual output in bash script
11:46
Combining an audio file with video file in python - Fahadkalis Newest 'ffmpeg' Questions - Stack Overflow

I am writing a program in Python on RaspberryPi(Raspbian), to combine / merge an audio file with video file. Format of Audio file is WAVE Format of Video file is h264 Audio and video already recorded and created at same time successfully, I just need to merge them now. Can you please guide me on how do I do that?
11:20
Concat video and image with ffmpeg [closed] - Remi_la Newest 'ffmpeg' Questions - Stack Overflow

I encouter an issue when I try to concat image and video with FFMPEG. When I concat a video at the beginning it works well. However when the video is not at the beginning it throws an error : "ffmpeg exited with code 234" To illustrate this, here is a command that works : ffmpeg -loop 1 -t 7 -framerate 60 -i file2.jpg -loop 1 -t 7 -framerate 60 -i file2.jpg -loop 1 -t 7 -framerate 60 -i file3.jpg -i file4.mp4 -i file5.mp3 -y -filter_complex (...)
05:57
how to make less encryption keys for FFMPEG - vinod Newest 'ffmpeg' Questions - Stack Overflow

I am using FFMPEG to encrypt my uploaded videos. I am using laravel. I've used a ffmpeg laravel package. $highBitrate = (new X264)->setKiloBitrate(25); //start encrypting fulllength files FFMpeg::fromDisk('public') ->open($filePath) // Provide the path relative to the 'local' disk ->exportForHLS() ->withRotatingEncryptionKey(function ($filename, $contents) use ($folderName,$uniquen_number) Storage::disk('public')->put('uploads/Videos_to_Revise/'.$folderName.'/'.$uniquen_number . (...)

8 May

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

14:58
pylwdrone and ffmpeg-python: pipe:0: Invalid data found when processing input [closed] - Saail Chavan Newest 'ffmpeg' Questions - Stack Overflow

I am using a lewei camera on my drone and i have managed to get the stream using https://github.com/meekworth/pylwdrone, i want to do basic image processing like face or object detection or qr code scan which i am unable to do when i use this command in terminal: $ pylwdrone stream start --out-file - | ffplay -i -fflags nobuffer -flags low_delay -probesize 32 -sync ext - i get a clear feed with no errors enter image description here When i am using the script in python i am getting errors and the feed is bit lagged and skips frames pipe:0: Invalid data (...) -- https://github.com/meekworth/pylwdrone, enter image description here
15:07
I use ffmpeg to format videos according to tik-toke standards [closed] - John Red Newest 'ffmpeg' Questions - Stack Overflow

I use ffmpeg to format videos according to tik-toke standards, but I don't know why videos are not cropped and lose quality. const transcode = async () => const ffmpeg = ffmpegRef.current; await ffmpeg.writeFile('input.mp4', await fetchFile(file)); await ffmpeg.exec([ '-i', 'input.mp4', '-vf', 'scale=1080:1920,crop=ih*(9/16):ih', 'output.mp4' ]); const data = await ffmpeg.readFile('output.mp4'); videoRef.current.src = URL.createObjectURL(new Blob([data.buffer], (...)
12:20
React JS video compressor [closed] - Muhammad Ali Newest 'ffmpeg' Questions - Stack Overflow

I tried it and sure enough I'm not typing the correct command in exec. Please let me know if you have a video resizing command for exec. const compress = async () => const videoURL = "../public/videos/20240508_095425.mp4"; const ffmpeg = ffmpegRef.current; await ffmpeg.writeFile("input.mp4", await fetchFile(videoURL)); await ffmpeg.exec([ "-i", "input.mp4", "-c:v", "copy", "-c:a", "aac", "-b:a", "128k", "output.mp4", ]); const fileData = await ffmpeg.readFile("output.mp4"); const data = new (...)
16:30
How do I correctly pause and resume recording with ffmpeg without messing with the fps? [closed] - 10typesofpeople Newest 'ffmpeg' Questions - Stack Overflow

I am recording desktop video and audio with ffmpeg. I am controlling the process with c#. Simplified, my ffmpeg arguments are "ffmpeg -f gdigrab -framerate 30 -i desktop -preset ultrafast -pix_fmt yuv420p output.mp4" I have some functionality to pause and resume the recording, essentially just suspending and resuming the process. This works, however, it leaves the paused section in the video, just one frame for the entire duration. To fix this, I added "-vf setpts=N/FR/TB" yo the arguments. This resolved that issue, but while recording my framerate was 1.3 fps rather than 30 and the (...)
23:25
Embed custom meta-data (bounding boxes) into HLS video stream - Alexender Iotko Newest 'ffmpeg' Questions - Stack Overflow

I'd like to embed bounding boxes, labels, etc. into live video stream to optionally draw them thereafter on the client-side in web-browser and looking for a way how to do. Could you please give me a hint how to insert the meta-data "on fly" and which player might be used for it?
17:29
PyQt QGraphicsScene Render Scene As Video Format - Alex Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to allow the user to export the scene as an mp4 (video format), the items of the scene consists of QGraphicsVideoItem and multiple QGraphicsTextItem, I need to export the scene as it will allow the user to save the video with the text items. I've found one of the ways to do this but the issue is that it will take hours for a simple 5 seconds videos as it saves every image to a byte to create a video, every image is a millisecond. If I change from millisecond to seconds it could speed up but the video will not look as smooth, is there a more efficient way of doing (...)
17:17
ffmpeg filters inserting escape characters in python [duplicate] - jdauthre Newest 'ffmpeg' Questions - Stack Overflow

I am running ffmpeg in python as a subprocess. I want to burn the subtitles into a video. Just using ffmpeg (commandline without python in windows) the following works: ffmpeg.exe" -y -i "input_file" -vf "subtitles= \\'input_file_path\\' :si=0" -acodec copy "output_file_path" the \\ escape characters are required by ffmpeg for special characters within a filter, However trying to replicate this within a python subprocess has proved problematic, here is one of many failed attempts: command = (...)
15:22
How can I convert a video raw frame to image using ffmpeg [closed] - Sean Newest 'ffmpeg' Questions - Stack Overflow

I have a video stream (from a DJI Drone) coming to a websocket server.The websocket server saves the data using the technique described in this answer. Technical Details The frame is : From a H265 video generated by the drone has size: height 1080 , width 1440 FPS : 30 Size: 45235 This is the raw video data as we receive from the getData() function of the video frame returned by the addStreamDataListener method Goal I want that the saved frame (I have noted the peculiar size) to be converted to ffpmeg. Attempt(s) to (...) -- getData() function, addStreamDataListener method, github
13:21
Can't reproduce a mp4 video in any of my browsers (Ubuntu 22.04.4) - user3303019 Newest 'ffmpeg' Questions - Stack Overflow

This one is weird. I can't reproduce the following video in the browser (tried brave, chrome, firefox and edge). https://a-pop.stg.intuitivo.ai/assets/animations/wowMomentOpenDoor.mp4 I have installed all sorts of codecs I may need and the regular video player plays the file no problem. For some reason it was working on Brave up until last week and it wasn't on chrome. It only happens on Linux apparently. Windows, Mac, android and iOS have no problem with the browser playing the animation. I don't have a clue what could be (...) -- https://a-pop.stg.intuitivo.ai/assets/animations/wowMomentOpenDoor.mp4
11:54
Is there a way to improve/ decode .h264 stream and use opencv for image processing - Saail Chavan Newest 'ffmpeg' Questions - Stack Overflow

I am using a lewei camera on my drone and i have managed to get the stream using https://github.com/meekworth/pylwdrone, i want to do basic image processing like face or object detection or qr code scan which i am unable to do when i use this command in terminal: $ pylwdrone stream start --out-file - | ffplay -i -fflags nobuffer -flags low_delay -probesize 32 -sync ext - i get a clear feed with no errors enter image description here When i am using the script in python i am getting errors and the feed is bit lagged and skips frames import cv2 import (...) -- https://github.com/meekworth/pylwdrone, enter image description here, enter image description here
11:00
Using ffmpeg to extract multiple images from video and get timestamp of extracted images - jogall Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg to extract one frame (as a jpeg) every five minutes from videos, and piping the output from the console to a text file in order to get the exact timestamps of the extracted frames. The command I'm using is: ffmpeg -i input.avi -ss 00:10:00 -vframes 10 -vf showinfo,fps=fps=1/300 %03d.jpg &> output.txt Where -ss 00:10:00 lets me skip ahead 10 mins in the video before starting, and -vframes 10 lets me capture only the first 10 frames (1 frame per 5 mins). This almost works fine except that the command outputs information for all frames, (...)
09:09
Record D3.js whiteboard animation as mp4 audio and video - Jin Ng Newest 'ffmpeg' Questions - Stack Overflow

I have a whiteboard/hand sketching app written with D3.js svg path elements. These elements are grouped into scenes with their own mp3 audio. Multiple scenes with their animated svg paths are played according to a timeline, with the audio running perfectly. So the end result is like a whiteboard animated movie. This works well within the app. How can i record the whole animation as a mp4 file? I would like to run this entirely on the client side. I have looked at ffmpeg but prefer not to do a desktop install for this web app. I looked into using (...)
03:58
Check if a video file has subtitles - 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?
03:23
seeking in a file that ffmpeg is processing from a live stream - Ken Mandelberg Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg to take input from a live stream and write an mkv file. The stream runs a few hours. I want to play the mkv file while this is in progress. I find that the players basically do "seeks" by playing through the file, which is ok for very short "seeks" but not for very long ones. When the ffmpeg ends it finalizes the mkv file, and seeks long or short work fine. What can I do to be able to have a more usable mkv while ffmpeg is in progress? I suppose I could force ffmpeg to create a new mkv file every hour, with a name including an index. (Is there any (...)

7 May

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

15:02
Is there a way i can live stream in real time a canvas and send it to another web server [closed] - N0edL Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a project where I have a canvas displaying gameplay, which is currently being live-streamed to the client canvas. Now, I want to stream this gameplay canvas to a third-party web server in real time using HLS or RTMP, but I'm unsure where to start. Could anyone provide some guidance or tips on how to achieve this? Here's what I've tried so far: I experimented with FFmpeg for the streaming, but didn't make much progress. I have a system in place that streams the gameplay to the client canvas. Any advice on how to set up the (...)
01:59
FFMPeg is not generating output video file [closed] - Rayam Tanta Newest 'ffmpeg' Questions - Stack Overflow

Could you please help me on the below? Whats wrong in the below command, am not seeing output file ffmpeg -y -framerate 30 -start_number 1 -loop 1 -i "C:\\Intel\\images%d.jpg" -i "C:\\Intel\\audio\\synthesized_audio.wav" -analyzeduration 2500000 -probesize 5000000 -c:v libx264 -pix_fmt yuv420p -c:a aac -strict experimental -shortest -muxers -f mpg "C:\\Intel\\output.mpg" string imagesDirectory = ⓐ"C:\\Intel\\images"; string audioFile = ⓐ"C:\\Intel\\audio\\synthesized_audio.wav"; string outputVideo = ⓐ"C:\\Intel\\output.mpg"; string ffmpegCommand = $"ffmpeg -y (...)
19:18
Copying GoPro metadata with ffmpeg - Could not find tag for codec none - TomMaier Newest 'ffmpeg' Questions - Stack Overflow

I am trying to use ffmpeg to copy the metadata of a gopro file. The most basic demonstration of the problem would be to copy everything to a new file: ffmpeg -y -i source.MP4 -c copy -copy_unknown -map 0:v -map 0:a -map 0:2 -map 0:3 -map 0:4 -map_metadata 0 result.MP4 This produces the error: Could not find tag for codec none in stream #2, codec not currently supported in container Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument Error initializing output stream 0:4 -- As I understand it this means that (...) -- GoPro file
18:21
ffmpeg subtitles alignment and position - friendlygiraffe Newest 'ffmpeg' Questions - Stack Overflow

I am adding subtitles to a video using: ffmpeg -i "imput.mp4" -lavfi "subtitles=subtitles.srt:force_style='OutlineColour=&H100000000,BorderStyle=3,Outline=1,Shadow=0,Fontsize=18'" -crf 1 -c:a copy "output.mp4" Which results in: I am repositioning this using Alignment : ffmpeg -i "imput.mp4" -lavfi "subtitles=subtitles.srt:force_style='Alignment=9,OutlineColour=&H100000000,BorderStyle=3,Outline=1,Shadow=0,Fontsize=18'" -crf 1 -c:a copy "output.mp4" But according to the Line-Alignment (...) -- Line-Alignment ASS Tags
16:44
CMake configuration for ffmpeg in C++ project - pp492 Newest 'ffmpeg' Questions - Stack Overflow

I have installed ffmpeg (version 4) with Homebrew and I am trying to use the various ffmpeg libraries in a C++ project, but I am getting multiple errors during linking. Undefined symbols for architecture x86_64: "_av_free", referenced from: _main in main.cpp.o "_av_packet_alloc", referenced from: _main in main.cpp.o "_av_parser_init", referenced from: And so on ... I have included the libraries as follow extern "C" #include #include #include But still, this doesn't work. (...)
16:33
How set CMake to find a local package FFmpeg? - zerpico Newest 'ffmpeg' Questions - Stack Overflow

I am trying write CMakeLists with FFmpeg package, with compile on Windows and Linux. First downloaded from FFmpeg-Builds shared releases I imagine the structure of the project like this: deps/ ffmpeg/ win-x64/ incluve/ lib/ bin/ linux-x64/ incluve/ lib/ bin/ src/ CMakeLists.txt How to help CMake find libraries: avcodec, avformat, avutil, etc? Maybe in the folder lib/pkgconfig using PkgConfig it is possible to specify the path. But I dont know (...) -- FFmpeg-Builds
07:30
Run "scrcpy" Commands And Throws Error "libopenh264.so.7 is missing" / "openh264 disabled" - 息子運命 Newest 'ffmpeg' Questions - Stack Overflow

I try to run scrcpy command like what I did before, and proved if it's worked not just once. scrcpy -m 540 -S but after re-installing my OS and use Fedora OS with dnf package manager, I got errors with output below. WARN: Demuxer 'audio': stream explicitly disabled by the device WARN: [FFmpeg] libopenh264.so.7: cannot open shared object file: No such file or directory: libopenh264.so.7 is missing, openh264 support will be disabled ERROR: Demuxer 'video': could not open codec ERROR: Demuxer error [server] INFO: Device screen turned (...)
04:49
FFMpeg avformat_write_header always returns < 0 - gabe.roze Newest 'ffmpeg' Questions - Stack Overflow

We've asked a freelancer to build a video encoder with FFMPeg for iOS but there is a bug and the freelancer is no longer available. I very inexperienced in FFMpeg and video encoding and am trying to debug this error. From what I understand, we're attempting to create an output file and create a header for it however, avformat_write_header is always less than zero. If I comment it out, it does not work - (BOOL) writeHeaderWithError:(NSError *__autoreleasing *)error AVDictionary *options = NULL; // Write header for output file int (...)

6 May

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

07:39
How to clone last frame when using overlay in ffmpeg? [closed] - mikezang Newest 'ffmpeg' Questions - Stack Overflow

I use this code to slide previous and next pages up, this is no problems, can I remove png file 1970～1979-last.png and use the last frame of video file 1970～1979.mp4 to instead it? script-01.txt color=white:864x504[c]; [0:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s0]; [1:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s1]; [c][s0]overlay=y=0-h*t[c]; [c][s1]overlay=y='if(between(t,0,18),max(H-h*t,0),max(0-h*(t-18),0-H))'[v], [v]tpad=stop_mode=clone:stop_duration=10[s2]; [s2]drawtext=fo
17:37
FFMPEG transcoding as 59.979960 fps instead of 60 fps [closed] - RJQ Newest 'ffmpeg' Questions - Stack Overflow

I am transcoding an image sequence to a 10 frame 60fps .mov files using the first command below. I am then concatenating the exported videos using the second command below. Transcode ffmpeg -y -r 60 -probesize 13M -start_number 1001 -i 'input_video.%04d.jpeg' -c:v libx265 -pix_fmt yuv420p10le -crf 28 -preset slower -tag:v hvc1 -vf lut3d='output_lut.cube' -r 60 -frames:v 10 -movflags faststart output_video_0001.mov Concatenate ffmpeg -y -f concat -safe 0 -i input_concat_list.txt -c copy output_concat.mov I expected the final file from the (...)
18:57
How do I make libavformat reconnect when connection is reset by peer? - user24897675 Newest 'ffmpeg' Questions - Stack Overflow

I am opening a network file via HTTPS like this: avformat_open_input(&m_format, "https://www.example.com/file.mp4", nullptr, nullptr); It works, however sometimes connection is closed and this is logged: [tls ⓐ 0x7f600ba690] Error in the pull function. [tls ⓐ 0x7f600ba690] IO error: Connection reset by peer [mov,mp4,m4a,3gp,3g2,mj2 ⓐ 0x7f6007e450] Packet corrupt (stream = 0, dts = 24188928). [aac ⓐ 0x7f60324800] Input buffer exhausted before END element found I found it possible to setup reconnection by logs from this post. Here are their (...)
18:18
Multiple fadeIn/fadeOut effects in one audio file with ffmpeg - farw Newest 'ffmpeg' Questions - Stack Overflow

I have some problem to add several fade effects to one audio file. When I try to use a command like this: ffmpeg -y -i /home/user/video/test/sound.mp3 -af "afade=t=in:ss=0:d=3,afade=t=out:st=7:d=3,afade=t=in:st=10:d=3,afade=t=out:st=17:d=3,afade=t=in:st=20:d=3,afade=t=out:st=27:d=3" /tmp/test.mp3 then my output audio file has a fadein and fadeout applied only once. All the next effects don't get applied. Is there any possible way to apply several fade effects to the same audio file? Also, what is the difference between ss and st parameter in this (...)
17:44
How to set "ch_layout" in ffmpeg 6.1? - Steven porite Newest 'ffmpeg' Questions - Stack Overflow

In 6.1 Ffmpeg, it use "ch_layout" to replace the "channel_layout" and "number". The "ch_layout" is "AVChannelLayout *" type. This type is defined in channel_layout.h, some kind of "ch_layout" is defined in this file too. If I want to use the "av_dict_set_int()" set the "ch_layout" to "AV_CHANNEL_LAYOUT_STEREO", what should I fill to the "value"? /** * Macro to define native channel layouts * * ⓐnote This doesn't use designated initializers for compatibility with C++ 17 and older. */ #define AV_CHANNEL_LAYOUT_MASK(nb, m) \\ /* .order */ (...)
11:21
The maximum recursion level for setlocal has been reached [closed] - pengfei liu Newest 'ffmpeg' Questions - Stack Overflow

ⓐecho off setlocal enabledelayedexpansion rem 设置源视频文件夹路径和目标视频文件夹路径 set source_folder=F:\\BaiduNetdiskDownload\\dhm\\uploaded set target_folder=C:\\Users\\SF-ZJ-442\\Desktop\\target_folder rem 确保目标文件夹存在，如果不存在则创建 if not exist "%target_folder%" mkdir "%target_folder%" rem 设置目标分辨率（例如：1280x720） set target_resolution=1080:1920 echo start....... echo "%source_folder%\\*.mp4" rem 遍历源文件夹中的所有视频文件 for %%i in ("%source_folder%\\*.mp4") do ( rem 提取文件名和扩展名 set "filename=%%~ni" set "extension=%%~xi" rem 构建目标文件路径 set (...)
13:13
is it possible to read mp3 id3 tags in php using ffmpeg? if so then how? [closed] - Assassiŋ Shaɖow Newest 'ffmpeg' Questions - Stack Overflow

Hi i have a few mp3 files in my server which constantly change and i need the mp3 id3 tags for people to know what song is being played at the moment preferably via php . I am a complete noob at this so any help is helpful.
14:05
Error transcoding with FFmpeg: Error: Output format hls is not available - asif mohmd Newest 'ffmpeg' Questions - Stack Overflow

I am using FFmpeg library to transcode a video file into multiple resolutions and create an HLS (HTTP Live Streaming) master playlist. It takes a video file as input but its does give me the output with HLS playlist.I got a error called "Output format hls is not available". Only the Output directory is creating I am using FFMpeg 7.0 full build version and also tried older versions and ffmpeg essentials and also tried chocolatey. if i remove the implementation of HLS from this code.it will create 4 different resolution videos in my output. Note:I just tried this same (...)
02:02
How to customize the spectrograms generated with ffmpeg or SoX? [closed] - Mark I Newest 'ffmpeg' Questions - Stack Overflow

I found code to batch generate spectrograms of music files I have with SoX and ffmpeg, and while they work I'd like to customize the spectrograms they generate to make them look "nicer", more like Spek's. Specifically, I want to change the x axis' time format from s to mm:ss, the font, the frequency format, and add some info about the file above the spectrogram. I can't find anything in their documentation, so what parameters would I have to add to the sox or ffmpeg commands to make their output look more like (...) -- like this?
08:35
Convert png images to HEVC with alpha video via ffmpeg [closed] - foxhable Newest 'ffmpeg' Questions - Stack Overflow

I am trying to create a video from a sequence of png images in the HEVC with alpha codec via ffmpeg. After the command ffmpeg -i a%d.png -r 30 -c:v hevc_videotoolbox -allow_sw 1 -alpha_quality 1 -vtag hvc1 ffmpeg-hevc.mov I get a video with a transparent background that opens in QuickTime, but not Safari. Info about this video via ffprobe: ffprobe .\\ffmpeg-hevc.mov Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\\ffmpeg-hevc.mov': Metadata: major_brand : qt minor_version : 512 compatible_brands: qt encoder : Lavf61.3.103 (...) -- video
06:28
How to use pyav or opencv to decode a live stream of raw H.264 data? - Dery Newest 'ffmpeg' Questions - Stack Overflow

The data was received by socket ,with no more shell , they are pure I P B frames begin with NAL Header(something like 00 00 00 01). I am now using pyav to decode the frames ,but i can only decode the data after the second pps info(in key frame) was received(so the chunk of data I send to my decode thread can begin with pps and sps ), otherwise the decode() or demux() will return error "non-existing PPS 0 referenced decode_slice_header error" . I want to feed data to a sustaining decoder which can remember the previous P frame , so after feeding one B frame, the decoder return a (...)
00:16
FFmpeg does not detect bitstream filter parameter - FFmpegEnthusiast Newest 'ffmpeg' Questions - Stack Overflow

I have tried to make a bitstream filter for FFmpeg that drops the nth keyframe for positive numbers and allows the first n keyframes and drops the rest for nonpositive numbers, called "datamosh": ffmpeg -i input.webm -bsf:v datamosh=target=20 -c copy output.webm outputs the error: Option 'target' not found [vost#0:0/copy ⓐ 0x54edc40] Error parsing bitstream filter sequence 'datamosh=target=20': Option not found Here is the code for the "datamosh" bitstream filter: #include "bsf.h" #include "bsf_internal.h" #include (...)

5 May

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

22:43
Adding a rotating effect on an image using ffmpeg? [closed] - Garry Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to overlay an image on a video, and add subtle rotating effects for that image, left, right, left right, and so on. (see pictures) The rotation works, however the edges are always very jagged and bad quality. Is there a way to improve my filters, or is there a better approach that I can use, without jagged edges? This works, overlays the image.png and applies to rotating effect: ffmpeg -loop 1 -i image.png -i video.mp4 -t 10 -filter_complex (...) -- , ,
15:42
Can I only use video file to countdown at last frame? [closed] - mikezang Newest 'ffmpeg' Questions - Stack Overflow

I save the last frame to image when I create a video, then I convert image to 10 seconds video and put countdown on it, at last, merge this two videos. I can also use video to countdown but that start from first frame, how can I countdown at last frame? countdown.bat ffmpeg -hide_banner ^ -i "C:\\myvideos\\video.mp4" ^ -filter_complex_script countdown.txt ^ -t 30 -y %2.mp4 countdown.txt [0:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s0]; [s0]drawtext=fontfile='/WINDOWS/Fonts/Arial.ttf':text='%eif\\:10-t\\:
14:13
The question about ffmpeg drawtext filter [closed] - B1GGersnow Newest 'ffmpeg' Questions - Stack Overflow

I tried to use rockchip(aarch64) hardware acceleration and add a drawtext filter to add watermarks. However, squares appear when multiple Chinese fonts are added. This is my compilation parameter. ./configure --prefix=/usr --enable-gpl --enable-version3 --enable-libdrm --enable-rkmpp --enable-rkrga --enable-filter=drawtext --enable-libharfbuzz --enable-libfreetype --enable-libfontconfig --enable-libfreetype --enable-libfribidi ffmpeg -hwaccel rkmpp -hwaccel_output_format drm_prime -i 1.mp4 -vf (...) -- img1, img2
16:30
FFMPEG Command to convert images to svg [closed] - themujahidkhan Newest 'ffmpeg' Questions - Stack Overflow

Users are trying to convert images to SVG image on my website, Below I've given a link to the site, more detail on error and code that handles the conversion of media files. You can check out the live site Here. Steps to reproduce the error. Upload the png file, Select SVG as output file Click convert. It is throwing error. Below is the code for that converts users input and gives input based on user preference. // imports import createCanvas, loadImage from "canvas"; import Action from "ⓐ/types"; import FFmpeg (...)
20:24
convert video to audio using ffmpeg - shakti goyal Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert a video to mp3 using ffmpeg library but ffmpeg command is not working, it is returning the code 1 Video conversion to MP3 failed with return code: 1 try final session = await FFmpegKit.execute('-i $videoFilePath -vn -ar 44100 -ac 2 -b:a 192k -f mp3 $audioFilePath'); final returnCode = await session.getReturnCode(); if (ReturnCode.isSuccess(returnCode)) print('Video conversion to MP3 successful!'); else print('Video conversion to MP3 failed with return code: $returnCode'); (...)
18:59
Can you change decoded format with ffmpeg? [closed] - Gunter Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to play some videos from my external hard drive onto my TV. However, it seems Planar 4:2:0 YUV 10 bit LE is too demanding for my TV. The video codec for my videos are h264. I have some other videos that are h264 and are able to run on my TV. When I open them on VLC, their decoded format is blank. The problem just occurs when the decoded format is YUV 10-bit. I'm not too familiar with ffmpeg and I'm not sure what commands I need or if it's possible to change the decoded (...)
18:13
How to change pitch and tempo together, reliably with ffmpeg - 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 (...)
18:08
Is there a way to horizontal flip video captured from flutter front camera - JoyJoy Newest 'ffmpeg' Questions - Stack Overflow

Basically, I'm trying to flip video horizontally after capturing it from flutter front camera. So I start recording, stop recording, flip the video and pass it to another page. I'm fairly new and would appreciate any assistance as my code isn't working I've tried doing so using the new ffmpeg_kit flutter Future flipVideo(String inputPath, String outputPath) async final ffmpegCommand = "-i $inputPath -vf hflip $outputPath"; final session = FFmpegKit.executeAsync(ffmpegCommand); await session.then((session) async final returnCode = await (...) -- ffmpeg_kit
16:45
How to perform Video Trimming & Merging Performance in Mobile App? [closed] - Harpreet Singh.8052 Newest 'ffmpeg' Questions - Stack Overflow

I am in the process of developing an app that will allow users to trim and merge recorded videos similar to Snapchat and Instagram stories. Currently, I am using FFmpeg for video processing, but it is taking too long to complete. I have come up with an idea to use ExoPlayer to minimize processing time. My plan is to store the trimmed duration of multiple videos and only play the trimmed part when the video is played. ExoPlayer allows playing multiple videos seamlessly, so it will appear as if the videos have been trimmed and merged. However, I am uncertain about how to handle video (...)
15:13
How to apply the same FFMPEG slide transition for every slide in a sequence? - will Newest 'ffmpeg' Questions - Stack Overflow

I have an ffmpeg command to create an MP4 video from a sequence of N x JPEG slides. That is, I do not know how many slides there are in the sequence, it is just a directory of JPEG-s. I'd like to apply a common slide transition for every slide in the sequence. All the examples I've read seem to need to know how many slides there are before the filter is written. The idea is to use one (simple) transition/filter for every slide. So far the script looks like this: play_duration="-framerate 1/10" # 10 seconds for testing ffmpeg \\ $play_duration \\ (...) -- How to Create a Slideshow from Images using FFmpeg
06:56
How to improve Video Trimming & Merging Performance for Mobile App [closed] - Harpreet Singh.8052 Newest 'ffmpeg' Questions - Stack Overflow

I am in the process of developing an app that will allow users to trim and merge recorded videos similar to Snapchat and Instagram stories. Currently, I am using FFmpeg for video processing, but it is taking too long to complete. I have come up with an idea to use ExoPlayer to minimize processing time. My plan is to store the trimmed duration of multiple videos and only play the trimmed part when the video is played. ExoPlayer allows playing multiple videos seamlessly, so it will appear as if the videos have been trimmed and merged. However, I am uncertain about how to handle video (...)
09:12
Running ffmpeg in Docker environment on AWS EC2 [duplicate] - must Newest 'ffmpeg' Questions - Stack Overflow

I want to use FFMPEG inside my Java application. I want to instal ffmpeg in environment where this app is running. My current Dockerfile: # Stage 1: Build the application FROM maven:3.8.4-openjdk-17 AS build WORKDIR /app COPY pom.xml . COPY src ./src RUN mvn clean install -Dmaven.test.skip=true # Stage 2: Run the application FROM openjdk:17 WORKDIR /app COPY --from=build /app/target/application.jar ./app.jar EXPOSE 8080 CMD ["java", "-jar", "-Dspring.profiles.active=pr", "app.jar"] I simply built a docker image by (...) -- https://hub.docker.com/r/jrottenberg/ffmpeg
05:16
How can I found FFmpeg Error code's meaning? - Birds Newest 'ffmpeg' Questions - Stack Overflow

I have an issue using FFMPEG. avcodec_send_packet() is returning error code -12. I am trying to find what the meaning of -12 is. I found this page but I can't understand the calculation for -12: How can I find out what this ffmpeg error code means? Can anyone help me? I'm using DXVA2 for decoding. and avcodec_send_packet() function is return -12 after the 20th frame. 20th frame return 21st frame return (...) -- ,
00:43
How to horizontal flip video captured from flutter front camera - JoyJoy Newest 'ffmpeg' Questions - Stack Overflow

Basically, I'm trying to flip video horizontally after capturing it from flutter front camera. So I start recording, stop recording, flip the video and pass it to another page. I'm fairly new and would appreciate any assistance as my code isn't working I've tried doing so using the new ffmpeg_kit flutter -- ffmpeg_kit

4 May

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

23:52
how to set subtitles quality in ffmpeg - Exorcismus Newest 'ffmpeg' Questions - Stack Overflow

am trying to burn captions on a video using ffmpeg, for some videos the subtitles quality looks bad similar to the image below... currently the configurations am using are ... .withVideoCodec("libx264") .withAudioCodec("copy") .withOutputFormat("mp4") .outputOptions("-preset veryfast") .outputOptions('-max_muxing_queue_size 1024') how can I differentiate captions quality from video quality ? --
13:49
python 3 using ffmpeg in a subprocess getting stderr decoding error - jdauthre Newest 'ffmpeg' Questions - Stack Overflow

I am running ffmpeg as a subprocess and using the stderr to get various bits of data like the subtitles stream Id's. It works fine for most videos, but one with japanese subtitles results in an error: 'charmap' codec can't decode byte in position xxx : character maps to Much googling suggests the problem is that the japanese requires unicode, whereas English does not. Solutions offered refer to problems with files, and I cannot find a way of doing the same with the stderr. Relevent Code is below: command = (...)
13:31
Audio file could not be read as PCM WAV, AIFF/AIFF-C, or Native FLAC; check if file is corrupted or in another format - 陳昱廷 Newest 'ffmpeg' Questions - Stack Overflow

import os import speech_recognition as sr command = "ffmpeg -i videototext.mp4 videototext.mp3" os.system(command) commandwav = "ffmpeg -i videototext.mp3 videototext.wav" os.system(commandwav) AUDIO_FILE = "videototext.wav" r = sr.Recognizer() videototext = sr.AudioFile(AUDIO_FILE) with videototext as source: audio = r.record(source, duration=100) print(type(audio)) print(r.recognize_google(audio)) above is my code,then the error is: Audio file could not be read as PCM WAV, AIFF/AIFF-C, or (...)
06:29
Batch generating spectrograms with ffmpeg or SoX: how to customize their appearance, and is my code so far correct? - Mark I Newest 'ffmpeg' Questions - Stack Overflow

I have a .flac music library, and for organizational and quality assessment reasons I want to have spectrograms of every song in it. After finding out that the program I usually use to view them, Spek, doesn't offer a batch export option, I have found ways to batch generate spectrograms with both SoX and fmpeg. Below you can find the two scripts I've got, which take as an input a folder which contains flac files or subfolders containing flac files, and output their spectrograms (with the same names as their corresponding flacs) to an output folder with the same structure as the (...) -- this is what the output looks like:, this is what it outputs: , Spek outputs
05:55
Ffplay dual monitor setup - Alexandr Zarubkin Newest 'ffmpeg' Questions - Stack Overflow

How can I launch ffplay on the second monitor in full screen mode? I need to play a video file while analyzing video player output to get current position in the file being played.
02:11
How to split one overlay script to multiple part scripts? - mikezang Newest 'ffmpeg' Questions - Stack Overflow

I can slide 30 images from left to center and countdown 10 seconds, then keep slide to left..., but run this script more than hours... script.txt [0:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s0]; [1:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s1]; ... [29:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s29]; [s0]split=2[bg][v]; [bg]drawbox=c=white:t=fill[bg]; [bg][v]overlay=x='if(between(t,0,10),max(W-w*(t-0),0),max(0-w*(t-10),0-W))', dra -- , ,

3 May

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

09:43
Muxing together a .ts file and a sub file causes playback issues in video and audio [closed] - Meta83 Newest 'ffmpeg' Questions - Stack Overflow

So I have a .ts file and a converted .dvb sub file (.SRT TO .DVB) that I want to mux togheter using FFMPEG. The mux is a success and the file plays fine in VLC or other modern divce.However I have an older divce (around 10 yeras old) where playback has issues, whenever a line of subs is displayd the picture and and audio gets corrupted and frezzes up and as sson there are no lins everything looks good again and so on. Note that subs are displayd correctly and they are not affected by the issue, only picture and audio is. I have tried using diffrent command without any luck but here (...)
09:04
HEVC with alpha [closed] - foxhable Newest 'ffmpeg' Questions - Stack Overflow

I trying create HEVC with alpha video from png images through ffmpeg. When i try, it outputs a video that works, has a transparent background and opens in QuickTime, but does not open in Safari. Then i try creating in prores 4444 codec and convert from macOS Context Menu -> Encode Selected Video Files with HEVC 1080p and Preserve Transparency. It has work - video with transparent background, open in QuickTime and in Safari. So i tried understand what a difference in meta data and only what i find its working video has HVEC encoder, but not working has Lavc61.5.103 (...) -- example of working video
15:07
encoding XDCAM MXF with FFMPEG [closed] - Mark Yang Newest 'ffmpeg' Questions - Stack Overflow

Trying to encode XDCAM HD422 MXF with FFMPEG But can't know specific setting for encoder/format/mux Anyone can show me sample code or give some advice for that ?
07:45
Specify percentage instead of time to ffmpeg - user779159 Newest 'ffmpeg' Questions - Stack Overflow

To get a thumbnail from an image halfway through the video I can do ffmpeg -ss 100 -i /tmp/video.mp4 -frames:v 1 -s 200x100 image.jpg. By using -ss 100 it gets a thumbnail at 100 seconds (which would be halfway through the video assuming the video is 200 seconds long). But if I don't know the exact length of the video, in my application code I would need to use something like ffprobe to first determine the length of the video, and then divide it by 2 to get the thumbnail time. Is there a way to get ffmpeg to get the thumbnail at the percentage of the video you (...)

2 May

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

12:57
FFmpeg - MP4 file converted from PNG files is not playable [closed] - StamShamen Newest 'ffmpeg' Questions - Stack Overflow

I am attempting to use FFmpeg and JavaScript to convert multiple PNG files to an MP4 video. However, sometimes the output video is not playable (1kb) and no error appears in the output. This is the command that I run: ffmpeg -y -r 25 -i "videos-reporter/123/screenshots/%04d.png" -c:v libx264 -preset medium -crf 20 -pix_fmt yuv420p -vf "scale=1200:trunc(ow/a/2)*2,setpts=3.0*PTS" -threads 4 "videos-reporter/123/video.mp4" Output of playable video: Input #0, image2, from (...)
21:18
How to create chunks of videos (.ts) and .m3u8 file from a mp4 video? - Nafisur Ahmed Newest 'ffmpeg' Questions - Stack Overflow

I need to create chunks of videos (.ts) of fixed duration (say 5 or 10 seconds) from a mp4 video. And also I need the chunks in different formats (260p, 480p, 720p, 1080p). I'm able to create the chunks and m3u8 using the command below: ffmpeg -i input.mp4 -g 60 -hls_time 10 out.m3u8 but not able to create for different resolutions as mentioned above.
21:03
Output image twice in ffplay - Sun Tzun Newest 'ffmpeg' Questions - Stack Overflow

I need to show two similar images from a webcam side-by-side. I can achieve this with this piped command, but it runs with a few seconds latency: ffmpeg -f dshow -i video="Logi C310 HD WebCam" -filter_complex "[0:v][0:v]hstack=inputs=2[v]" -map "[v]" -f matroska - | ffplay - I'd prefer to do the same in just ffplay. I'd also like to have the resulting image cropped to a square size or to the size of the original image (like if the picture from webcam gets divided by half and the halfs took each other places). What I need in this end is a tool that (...)
20:01
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 (...)
18:52
convert video to audio - ffmpeg - shakti goyal Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert video to audio using ffmpeg in flutter based application but command is not working. Is there something wrong with the command? void convert(File pickedVideo) async Directory applicationDocDirectory = await getApplicationDocumentsDirectory(); final outputPath = '$applicationDocDirectory.path/output-audio-$const Uuid().v1().mp3'; final session = await FFmpegKit.execute('-i $pickedVideo.path -vn -acodec mp3 $outputPath'); final returnCode = await session.getReturnCode(); (...)
15:01
How trim last frames from old mp4 video and merge new to it in one ffmpeg command? [closed] - mikezang Newest 'ffmpeg' Questions - Stack Overflow

I have a full time old mp4 video and a newest video, I want to trim frames from old video, then merge new to old trimed to build a new full video, can I do it in one ffmpeg command without reencode? Something like oldFull.mp4 - lastFrames) + new.mp4 = newFull,mp4 If old full frames are oldFrames, and want to remove last frames as removeFrames, how can I merge new.mp4 to OUT? ffmpeg -i IN -c copy -bsf:v noise=drop=between(n\\,removeFrames\\,oldFrames) (...)
14:24
convert video to audio using ffmpeg - flutter - shakti goyal Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert video to audio using flutter ffmpeg kit package but it is returning ReturnCode 1 which is false this is the command Directory applicationDocDirectory = await getApplicationDocumentsDirectory(); outputPath = '$applicationDocDirectory.path/output-audio-$const Uuid().v1().mp3'; FFmpegKit.execute('-i $widget.pickedVideo.path -vn -ar 44100 -ac 2 -b:a 256k -f mp3 $outputPath'); is something wrong with the (...)
10:16
When creating ffmpeg segments instead of "-t" I cannot move inside the resulting MP4 file [closed] - pavlii Newest 'ffmpeg' Questions - Stack Overflow

We are using ffmpeg for grabbing X11 session and we had changed a bit the commant run. I will write only the different part of the command; the rest were maintained so are not important for this problem: ffmpeg ..... -t 00:14:58 (old command) ffmpeg ..... -f segment -segment_time 900 -strftime 1 (new command) Resulting files are (in both cases) MP4. But in new - using segments - variant I am able to open the file in VLC player as usual but I cannot do any location inside. So I have to wait for example 700s to see what had happened at that time - I cannot use VLC slider to (...)
13:34
How to slide mutiple images left continuously? - mikezang Newest 'ffmpeg' Questions - Stack Overflow

I use ffmpeg to slide images from left to center as below: #slide 1st image from right to center #countdown 10 seconds #slide 1st image from center to left and in the same time #slide 2nd image from right to center #countdown 10 seconds #... ffmpeg -loglevel quiet -loop 1 -i input.png -filter_complex "split=2[bg][slider];[bg]drawbox=c=black:t=fill[bg];[bg][slider]overlay=x='max(W-w*t,0)':y=0" -t 10 -y output.mp4 There is black background between two images, I want to the preious page keep slide from center to left and next page slide (...) --
13:05
"fmpeg" has no attribute "input" - Robin Singh Newest 'ffmpeg' Questions - Stack Overflow

I had previously built this youtube downloader but when I tested it recently; it stopped working. from pytube import YouTube import ffmpeg import os raw = 'C:\\ProgramData\\ytChache' path1 = 'C:\\ProgramData\\ytChache\\Video\\\\' path2 = 'C:\\ProgramData\\ytChache\\Audio\\\\' file_type = "mp4" if os.path.exists(path1 and path2): boo = True else: boo = False while boo: url = str(input("Link : ")) choice = int(input('Enter 1 for Only Audio and Enter 2 For Both Audio and Video \\n: (...)
12:54
FFMPEG C Library: Encoding h264 stream into Matroska .mkv on MacOS - KaisoHHH Newest 'ffmpeg' Questions - Stack Overflow

FFMPEG C Library: Encoding h264 stream into Matroska .mkv container creates corrupt files Above is the related question, and the answer of allocating memory for extradata of codec context works. But on MacOS, with the encoder videotoolbox, this approach creates corrupted video file for any container, including mp4 and mkv. But what it does better for mkv is that at least the corrupted file is not 0 size. I was wondering what is the correct way to encode stream to mkv on MacOS? Below is my code initiating the outputcodec auto path = previewPath.toStdString(); // (...)
10:19
I was trying to render a gif over an video created from a single image by adding an audio stream, but the gif is not rendering [closed] - Madhur Arora Newest 'ffmpeg' Questions - Stack Overflow

the gif is not rendering !ffmpeg -i /content/lipsync_facerefine_studio/assets/7cbdde.jpg -stream_loop -1 -i /content/lipsync_facerefine_studio/temp/c0703.gif -i /content/lipsync_facerefine_studio/lipsync/temp/48409e30-a572-42ac-9893-cf24f3cd866d.wav -filter_complex "[1]fade=in:st=0:d=2.5:alpha=1,scale=499.99999999999994:375.0[layer1];[0][layer1]overlay=x='if(lt(t,2.5),81.0-(w/2)+t*(w/5.0),81.0)':y=81.0:shortest=1[overlay1];" -map 2:a -map '[overlay1]' /content/lipsync_facerefine_studio/temp/temp.mp4 (...)

1 May

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

22:51
Python library to extract metadata from video file stored in variable, rather than on filesystem - Adam J. Kessel Newest 'ffmpeg' Questions - Stack Overflow

Is there a standard solution for extracting metadata (like aspect ratio, codec, etc) from video data stored in a Python variable, rather than from a file on disk? I see people point most often to ffmpeg-python for video metadata analysis, but as far as I can tell, it can only operate on a filename rather than an object in memory. One possible workaround is to tell ffmpeg-python to use stdin pipe as input and then output the contents of the variable to that pipe, but this seems cumbersome. If ffmpeg-python accepted a file handle rather than filename, you could use BytesIO, but this (...)
23:03
AWS MediaConvert generating double length video - user1hjgjhgjhggjhg Newest 'ffmpeg' Questions - Stack Overflow

I am new to aws media convert. I am trying to convert the video but the final output video becomes double the length from the original one. for example if I have a video 30 seconds long, it will create 60 seconds long final video. Below is my son. "Queue": "arn:aws:mediaconvert:us-west-2:730335xxxxx:queues/Default", "UserMetadata": , "Role": "arn:aws:iam::73033541xxxx:role/service-role/MediaConvert_Default_Role", "Settings": "TimecodeConfig": "Source": "ZEROBASED" , "OutputGroups": [ "Name": "DASH ISO", "Outputs": [ (...)
11:16
List of FFMPEG audio formats and their file extensions - vaid Newest 'ffmpeg' Questions - Stack Overflow

I've tried to find information about this but to no avail. What audio formats and their file extensions are supported by FFMPEG? Is there a command that can list them all?
09:33
How to create video from a stream webcam and canvas? - Stefdelec Newest 'ffmpeg' Questions - Stack Overflow

I am trying to generate a video on browser from different cut: Slide: stream from canvas Video: stream from webcam I just want to allow user to download the video edit with slide1 + video1 + slide2 + video2 + slide3 + video3. Here is my code: const canvas = document.getElementById('myCanvas'); const ctx = canvas.getContext('2d'); const webcam = document.getElementById('webcam'); const videoPlayer = document.createElement('video'); videoPlayer.controls = (...) -- https://jsfiddle.net/Sulot/nmqf6wdj/25/

30 April

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

16:42
Error when concatenating video files from different sub directories using ffmpeg in win10 command prompt? [closed] - Roasty247 Newest 'ffmpeg' Questions - Stack Overflow

I have thousands of videos that are written by a device (RP116) in structured subfolders: device > date > hour > minute.mp4 Every folder has up to 60 minute-long videos. I would like to combine them into a single .mp4 file with ffmpeg in windows command prompt. I can do this within a single folder with the following: C:\\Users\\mjroa\\Desktop\\RP116\\20220513\\20>(for %i in (*.mp4) do ⓐecho file '%i') > mylist.txt ffmpeg -acodec aac -hide_banner -f concat -i mylist.txt -c copy test.video.concat.mp4 The text file is in the format: file (...)
16:03
HLS. FFmpeg: error when loading first segment [closed] - rus_99_pk Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to download a streaming video using ffmpeg. There is a file in the format *.m3u8. BUT, if everything was so simple, I would not have come here. There are a number of nuances: It cannot be downloaded by specifying a link to the file If you upload the file and look at its contents, there will be: #EXT-X-KEY:METHOD=AES-128,URI="[KEY],IV=[IV] With a URI, the task is easy to solve; just specify the value list.m3u8. I end up getting: Error when loading first segment (...) -- Trace log
16:44
How to create an MP4 from images [closed] - King Saozer Newest 'ffmpeg' Questions - Stack Overflow

I would like to merge all the *.png* images into a single .mp4 video file. But the file does not read on windows.11 Media Player I tried this command ffmpeg -y -i "screenshots/*.png" "screenshots/merged/video.mp4"
21:59
Why does a command in my Bash-script return 0 even when it fails? Python, Whisper, ffmpeg - d-b Newest 'ffmpeg' Questions - Stack Overflow

I have a bash script that executes whisper on all sound files in a directory. Whisper uses ffmpeg to decode sound files to a format it can handle. One of the files in the directory was corrupt and caused ffmpeg to fail. The first time I executed my script it returned 1 when it hit that file but when I try to reproduce the error it always returns 0. Here is the log from the first run when 1 was returned: Traceback (most recent call last): File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 48, in load_audio .run(cmd=["ffmpeg", (...)
17:38
(C_UDP Socket Programming) How can I convert binary file to video format? - user24723398 Newest 'ffmpeg' Questions - Stack Overflow

I am practicing UDP socket programming. My code's functions are below. Connect Server-Client and send "hello" message each other (it is working). Then Server is sending video file to client (problem). Transfer video file to client is working. But it is written in binary so I can't open the video. So I try to use ffmpeg to convert the video, but it doesn't work. Is there something wrong in my code? How can I transfer a received file to a video file? My environment is MacOs. Server.c (Server Code): #include #include (...)
16:41
Muxing H264 packets into a MPEGTS container using libav* - Lucen Newest 'ffmpeg' Questions - Stack Overflow

I'm writing a C++ program where I need to encode packets in h264 format and mux them to a MPEG TS container. For the encoding part, I based my code on the encode_video example (https://ffmpeg.org/doxygen/trunk/encode_video_8c-example.html#a9) provided in FFMPEG documentation, and it seems to work fine. In particular, I generate a std::vector of packets which I sequentially write to an output .ts file for debug. Such .ts file plays fine with SMPlayer, and a ffproba command gives >> ffprobe -print_format json -show_format -show_streams out.ts Input #0, h264, from (...) -- https://ffmpeg.org/doxygen/trunk/encode_video_8c-example.html#a9, https://ffmpeg.org/doxygen/trunk/mux_8c-example.html
15:47
RTSP server: setting the window title when using ffplay to stream from an RTSP url - tamirg Newest 'ffmpeg' Questions - Stack Overflow

I have an RTSP server running, and when im calling ffplay and streaming a video from that server, there's a specific title for this window. i know i have the -window_title param for ffplay, but i want to know if its possible to change that name from the RTSP server side? when running the RTSP server is there anyway to set the "name" that would be shown whenever someone is streaming using ffmpeg?
15:06
Why does my script return 0 when it fails? Bash, Whisper, ffmpeg - d-b Newest 'ffmpeg' Questions - Stack Overflow

I have a bash script that executes whisper on all sound files in a directory. Whisper uses ffmpeg to decode sound files to a format it can handle. One of the files in the directory was corrupt and caused ffmpeg to fail. The first time I executed my script it returned 1 when it hit that file but when I try to reproduce the error it always returns 0. Here is the log from the first run when 1 was returned: Traceback (most recent call last): File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 48, in load_audio .run(cmd=["ffmpeg", (...)
11:32
FFmpeg - HLS MUXER producing 0 bytes chunks as well as ) bytes manifest [closed] - Mohideen Irfan Newest 'ffmpeg' Questions - Stack Overflow

My ffmpeg code produces 0 bytes chunks as well as 0 bytes manifest. can someone tell what may be the cause for that. AVPacket contains the data too. Whether the data is valid or not valid that's off-topic here, right? As it writes any data into the muxer right? But why I am receiving ffmpeg log like: [hls ⓐ 0x617000084280] write_packet_common size:128 dts:192060 pts:192060 [hls ⓐ 0x617000084280] compute_muxer_pkt_fields: pts:192060 dts:192060 cur_dts:186030 b:0 size:128 st:1 [hls ⓐ 0x617000084280] av_write_frame: pts2:192060 dts2:192060 [hls ⓐ 0x617000084280] Opening (...)
13:36
FFmpeg produces empty file sometimes - Matan Malka Newest 'ffmpeg' Questions - Stack Overflow

I am currently using ffmpeg and attempting to convert multiple PNG files to MP4 video. My command is: ffmpeg -y -r 10 -i "videos-reporter/MC4xMzg3NDI1MTY2Mjg1MTk=/b8a7ee17d8ecfd199edbc5edc9691698/screenshots/%04d.png" -vcodec libx264 -pix_fmt yuv420p -vf "scale=1200:trunc(ow/a/2)*2","setpts=3.0*PTS" "videos-reporter/MC4xMzg3NDI1MTY2Mjg1MTk=/b8a7ee17d8ecfd199edbc5edc9691698/video.mp4" Sometimes, I'm unsure when the ffmpeg creates a 1kb empty video file that cannot be played. [0-1] stderr: ffmpeg version N-47683-g0e8eb07980-static (...)
10:57
HLS audio stream choppy in iOS and Mac Safari - but ok in Chrome, VLC - Elliot Newest 'ffmpeg' Questions - Stack Overflow

I have an HLS stream that seems to have the audio cut out and then return randomly. This only occurs on iOS devices, and Safari on Mac OS. It works fine on Desktop VLC, but not iOS VLC (as in, the audio never cuts out). More confusing still - if we have multiple developers listening to the same HLS stream on different devices at the same time, we all hear the audio cut out and the return at the same time. So clearly something is wrong with the stream itself. We create a dash stream from FFMPEG, and then create an HLS manifest in parallel. transcoder // Right now this (...)
10:33
FFmpeg uses xface to merge videos without transition effects - soapbar Newest 'ffmpeg' Questions - Stack Overflow

ffmpeg -i ./first.mp4 -i ./first.mp4 -filter_complex "xfade=transition=circlecrop:duration=1:offset=4,format=yuv420p" -y output.mp4 FFMPEG version 6.1.1, the video is generated normally without any error prompts, but the generated video does not have any transition effects. output ffmpeg version 6.1.1-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2000-2023 the FFmpeg developers built with Apple clang version 11.0.0 (clang-1100.0.33.17) configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig (...)
09:42
how to receive livestream chats from different platforms using rtmp? - rutujp78 Newest 'ffmpeg' Questions - Stack Overflow

I want to create StreamYard clone, I knew till the part where we can start the livestream for multiple platform at once using RTMP links and ffmpeg, but I want to know to receive chats from platform. I did livestream on YT and Insta but not able to figure out the chats part. import http from 'http' import path from 'path' import spawn from 'child_process' import express from 'express' import Server as SocketIO from 'socket.io' const app = express(); const server = http.createServer(app); const (...)
02:13
Forwarding an RTSP stream from IP camera to youtube [closed] - cbake Newest 'ffmpeg' Questions - Stack Overflow

I have an IP camera (Foscam FI9800P) capable of sending an RTSP stream (I've confirmed using VLC the stream works). I want to stream the video from that camera to youtube. I'm guessing the camera can't send it to youtube directly, so I need a device in the middle. Something like: IP Camera --> Raspberry Pi --> Youtube live Ideally I'd like to do this without re-encoding the video along the way. ffmpeg appears to be able to do this, but it has many options and I haven't been able to figure out all its command line options. (...)
07:06
The bot doesn't play music (discord.py) - Naydar Newest 'ffmpeg' Questions - Stack Overflow

The code works fine, but when using the command in guild the bot enters the voice channel but doesn't play music, immediately console gives: ffmpeg process 56560 successfully terminated with return code of 3199971767. import discord import youtube_dl import ffmpeg import requests from discord.ext import commands class music(commands.Cog, name = 'music'): def __init__(self, bot): self.bot = bot self.is_playing = False self.is_paused = False self.music_queue = [] self.YTDL_OPTIONS = 'format': (...)
04:33
ffmpeg: Could not find tag for codec none in stream #1, codec not currently supported in container - Kracozebr Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to record video from my ip camera stream with ffmpeg in command line fmpeg -rtsp_transport tcp \\ > -i rtsp://192.168.0.250/stream1 \\ > -c copy \\ > -map 0 \\ > -f segment \\ > -segment_time 60 \\ > -segment_format mp4 \\ > "/home/video/stream-%010d.mp4" and got the next output: ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2) configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu (...)
04:17
Transcode to webm utilizing multiple threads / processors - ensnare Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to utilize my multiple processors for my webm conversion but no matter what I do the process is single-threaded and takes forever. Is this possible? Any sample conversion strings? -threads 8 Just gets ignored. Thanks.
03:59
ffmpeg merge audio and video from ytdl-core, outputs an mp4 with no time (no seekable) - Andreu Newest 'ffmpeg' Questions - Stack Overflow

i'm trying to merge video and audio from ytdl-core with ffmpeg and export it to user in mp4. The output video apears without time (inifit duration) and can not seek or navigate to another point of the video. app.get('/downloadmp4', async (req, res)=> let url = req.query.url; if (!ytdl.validateURL(url)) return res.sendStatus(400); let title = 'video'; let info = await ytdl.getInfo(url); title = info.videoDetails.title.replace(/[^\\x00-\\x7F]/g, ""); res.header('Content-Disposition', `attachment; (...)
03:42
fluent ffmpeg => how to trim and concate parts of video into one output file without writing many output files. Make a most efficient solution - Shreyansh Gupta Newest 'ffmpeg' Questions - Stack Overflow

I'm currently working on a online video website and i need to make a quick preview of videos using random timestamps and duration of the video. Suppose the video is of 15 min then i want to cut out some parts like -> 1. from 00:00:40 take out next 2s 2. from 00:01:20 take out next 2s 3. ... and so on until the new video becomes 15s How can i do this with fluent-ffmpeg in the nodejs project Can i get the most efficient way of doing this without writing many output files and then concating them separately and removing then later Only concating the (...)

29 April

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

22:14
Resampling function produces audio with noise - kitty uwu Newest 'ffmpeg' Questions - Stack Overflow

I have function for resampling one channel of audio (as a float array): int resample_and_save(float *audio_input, int input_sample_rate, int output_sample_rate, int input_num_of_samples, const char *output_file) AVChannelLayout ch_layout = AV_CHANNEL_LAYOUT_MONO; SwrContext *swr_ctx = swr_alloc(); uint8_t* resampled_data = NULL; float *audio_output = NULL; int ret = 0; if (!swr_ctx) fprintf(stderr, "Could not allocate resampler context\\n"); return -1; av_opt_set_chlayout(swr_ctx, "in_chlayout", &ch_layout, 0); (...)
19:23
Ffmpeg cpp libav randomly uses high cpu and less gpu or uses high gpu and less cpu with hw accel - cngkyt Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg as library with cpp the integration of library is perfectly done i am using AVFilterGraph as audio resampler and video pixfmt converter. I cannot share code because it is a complete library and contains too many files but i can assure there is no problem about code but maybe approach. My whole class is based on the transcode example of ffmpeg text The problem is when i run my program that encodes approx 90 streams it starts with 25% cpu usage 80% gpu encode usage %85 gpu decode usage with 100% sm utilization or it starts with 80% cpu (...) -- text
17:16
Can't find error in function for changing sampling rate - kitty uwu Newest 'ffmpeg' Questions - Stack Overflow

I have function for changing sampling rate of audio (only one channel): int change_sampling_rate(float *audio_input, int input_sample_rate, int output_sample_rate, int input_num_of_samples, float **audio_output, int *result_num_of_samples) AVChannelLayout src_ch_layout = AV_CHANNEL_LAYOUT_MONO; AVChannelLayout dst_ch_layout = AV_CHANNEL_LAYOUT_MONO; struct SwrContext *swr_ctx; swr_ctx = swr_alloc(); int ret; if (!swr_ctx) fprintf(stderr, "Could not allocate resampler context\\n"); ret = AVERROR(ENOMEM); (...) -- https://jmp.sh/s/USFPaGnHXVuKFVYarYpm, https://jmp.sh/s/jbmWbPTwkdDujAocmi56
12:04
How to get the video resolution from a File in Dart/Flutter? - Fractale Newest 'ffmpeg' Questions - Stack Overflow

I was using video_player to do the rest of the metadata extraction I need but I didn't find a way to get the resolution with this package.
11:11
How do I properly include libraries in meson? - inThe-FLesh Newest 'ffmpeg' Questions - Stack Overflow

I am building a project that uses the ffmpeg libav libraries and I can't seem to get meson to compile with them. I have tried including just the headers but then definitions can't be found. I then compiled all of the source files I needed, and that didn't work either. I have compiled the whole thing into objects and plan to link them but I feel there should be an easier way.
08:34
How to specify --extra-cflags and --extra-ldflags when cross compiling? - H. Yong Newest 'ffmpeg' Questions - Stack Overflow

I am using the cross compiler aarch64-none-linux-gnu. Now I am trying to compile ffmpeg for aarch64 for a board with arm cpu. My question is when I run script like: export SYSROOT=/mnt/d/Libs/cross-compilers/arm-gnu-toolchain-13.2.Rel1-x86_64-aarch64-none-linux-gnu/aarch64-none-linux-gnu/libc ./configure --prefix=/usr/local \\ --enable-cross-compile \\ --cross-prefix=$CROSS_PREFIX \\ --sysroot=$SYSROOT \\ --arch=aarch64 \\ --target-os=linux \\ --host-os=linux \\ --enable-libvpx \\ --extra-cflags="-I/usr/local/include/vpx" \\ (...) -- aarch64-none-linux-gnu
09:13
Why ffmpeg concat results wrong fps? How to avoid it? - Jinglong Newest 'ffmpeg' Questions - Stack Overflow

I have several mp4 video files and want to concat there video streams into a new mp4 file. The command I used shows below: ffmpeg -f concat -safe 0 -i concat.txt -an -c:v copy -y out.mp4 The fps of result does not meet expectations. For example, there are two input wrote in concat.txt: file temp_result_0.mp4 file temp_result_1.mp4 file duration number of frames fps tbr temp_result_0.mp4 60.0 1200 20 20 temp_result_0.mp4 0.1 2 20 20 out.mp4 6
06:08
Index error with moviepy when running on aws - Hardik Patel Newest 'ffmpeg' Questions - Stack Overflow

I am getting this error: "MoviePy error: failed to read the duration of file %s.\\n" OSError: MoviePy error: failed to read the duration of file https://delivery.gettyimages.com/downloads/1490392845?k=20&e=AnE-X_nyTRBG5QvUm1OnnCZEOURkdWAdDeQJTmDW8Eo41FL7u_ROCopEha5N-Kwh-fxBr44QIe5s2vzAUchlcVs91TwSlJTMOKWYSTraamKCPRcJv19CqNZRB_FgLaW_. The funny thing is that for the same line of code: video_duration = VideoFileClip(getty_url).duration when running on my mac, it is running fine. However when running from an aws server I am getting this error: [2024-04-29 (...) -- https://delivery.gettyimages.com/downloads/1490392845?k=20&e=AnE-X_nyTRBG5QvUm1OnnCZEOURkdWAdDeQJTmDW8Eo41FL7u_ROCopEha5N-Kwh-fxBr44QIe5s2vzAUchlcVs91TwSlJTMOKWYSTraamKCPRcJv19CqNZRB_FgLaW_

28 April

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

21:48
How to yt-dlp extract youtube audio-only to 32-bit float 48000 .wav? [closed] - Rowe Morehouse Newest 'ffmpeg' Questions - Stack Overflow

My use case: Extract just the audio from a youtube URL directly to a .wav at 32-bit float 48000. Preferably without any post process args or secondary passes or after-the-fact conversion or muxing. I want f32le, aka PCM_f32le, aka PCM 32-bit floating-point little-endian, which is supported by ffmpeg. Also want 48000 sample rate, as stated. Is this possible? My current command: yt-dlp -f bestaudio --extract-audio --audio-format wav --audio-quality 0 What do I need to add to achieve my use case / (...)
18:55
adb screenrecord display only screenshot, it does not stream the screen [closed] - hexols Newest 'ffmpeg' Questions - Stack Overflow

I have an Android TV, I want to stream its screen in my Ubuntu PC. I used this command: adb shell screenrecord --output-format=h264 - | ffplay - and after waiting for a while it displays the screenshot of the TV. But I want to display live stream of the Android TV. I also used the following command as well but got the same result: adb exec-out screenrecord --bit-rate=16m --output-format=h264 --size 800x600 - | ffplay -framerate 60 -framedrop -bufsize 16M - How can I achieve this using this command? Or is there a way to achieve it with another way by (...)
22:07
Can't find error in function for changing sampling rate [closed] - kitty uwu Newest 'ffmpeg' Questions - Stack Overflow

I have function for changing sampling rate of audio (only one channel): int change_sampling_rate(float *audio_input, int input_sample_rate, int output_sample_rate, int input_num_of_samples, float **audio_output, int *result_num_of_samples) AVChannelLayout src_ch_layout = AV_CHANNEL_LAYOUT_MONO; AVChannelLayout dst_ch_layout = AV_CHANNEL_LAYOUT_MONO; struct SwrContext *swr_ctx; swr_ctx = swr_alloc(); int ret; if (!swr_ctx) fprintf(stderr, "Could not allocate resampler context\\n"); ret = AVERROR(ENOMEM); (...) -- https://jmp.sh/s/USFPaGnHXVuKFVYarYpm, https://jmp.sh/s/jbmWbPTwkdDujAocmi56
21:04
Dynamic ffmpeg crop, scale & encoding code seems to break when the crop size changes - Blindy Newest 'ffmpeg' Questions - Stack Overflow

The following code works perfectly as long as I only move the crop rectangle, however as soon as I change its size I no longer get frames out of my filter (av_buffersink_get_frame returns -11). It's crazy, even after the size changes, if it eventually changes to the original size that frame will go through, then it will go back to no longer providing frames. Would anyone happen to know what I'm doing wrong? My filter setup (note the crop & scale combination, it should (I think?) scale whatever I crop to the output video size): // buffer source -> buffer sink (...)
16:35
How to Convert 16:9 Video to 9:16 Ratio While Ensuring Speaker Presence in Frame? - shreesha Newest 'ffmpeg' Questions - Stack Overflow

I am tried so many time to figure out the problem in detecting the face and also it's not so smooth enough to like other tools out there. So basically I am using python and Yolo in this project but I want the person who is talking and who the ROI (region of interest) is. Here is the code: from ultralytics import YOLO from ultralytics.engine.results import Results from moviepy.editor import VideoFileClip, concatenate_videoclips from moviepy.video.fx.crop import crop # Load the YOLOv8 model model = YOLO("yolov8n.pt") # Load the input (...)
13:22
Convert a sequence of exr files to mp4 using moviepy - 0xbadf00d Newest 'ffmpeg' Questions - Stack Overflow

I have a sequence of exr files which I want to convert into a video using moviepy. When Since the colors in the exrs need be converted (otherwise the video appears almost black) I need to specify a color transfer characteristic. When I run ffmpeg directly using ffmpeg -y -apply_trc iec61966_2_1 -i input_%d.exr -vcodec mpeg4 output.mp4 everything is working perfectly fine. However, if I read the exrs using clip = ImageSequenceClip("folder_to_my_exrs/", fps = 24) and try to write the video using .write_videofile("output.mp4", codec = "mpeg4", ffmpeg_params = (...)
13:01
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 (...)
10:43
How to run ffmpeg with hardware encoding when using --filter_complex to hardcode subtitles? [closed] - user2006141 Newest 'ffmpeg' Questions - Stack Overflow

I'm converting MKV files and hardcoding subtitles into MP4 format. I have over 100 files and want to speed the process up by enabling hardware encoding. I am able to hardware encode without hardcoding the subtitles via --filter_complex but as soon as I apply the filter it errors out. Here is my command line that works perfectly fine. ffmpeg -i input.mkv -filter_complex "[0:v:0]subtitles='input.mkv':si=0[v]" -map "[v]" -map 0:a:1 -c:a copy -map_chapters -1 "output.mp4" Here is my command line that works with hardware encoding without --filter_complex (...)
04:26
How to Play Multiple Streams with FFPLAY at the Same Time using RTSP Url - Bilal Ahmed Yaseen Newest 'ffmpeg' Questions - Stack Overflow

I am trying to play live stream coming from the server with RTSP URL. A sample RTSP URL is given below: rtsp://username:passwordⓐmachine_ip/42331536059e9f21 Actually, this stream is the call between two participants (caller & called). But when I play this URL with FFPLAY, I get just one stream(called) while I should get both streams (caller and called). I am using the following command: ffplay rtsp://username:passwordⓐmachine_ip/42331536059e9f21 Am I missing some parameters along with this command to fetch all (...)
00:22
Python pydub issue: Can't repoen a wav file after it as been reencoded by ffpeg [Silved] - Trent Tompkins Newest 'ffmpeg' Questions - Stack Overflow

Solved by Michael Butscher. Updated code is now in the repo in the fixed branch. Thanks! I have a python script that reads in all the *.wav files in a directory and saves them in a folder called output after it adjusts their volume. lower.py: import os from pydub import AudioSegment as ass # get the current working directory current_working_directory = os.getcwd() all_files = os.listdir(); while len(all_files) > 0: file = all_files.pop() song = ass.from_wav(file) song = song - 16 (...) -- https://github.com/tibberous/ChangeWavVolume/tree/fixed

27 April

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

17:59
ffplay cannot play video after being encoded and decoded with vvenc and vvdec [closed] - TompyCZ Newest 'ffmpeg' Questions - Stack Overflow

After encoding a video sequence named crowd run, from https://media.xiph.org/video/derf/, the 2160p version with ffmpeg integrated with vvenc and vvdec according to this tutorial https://github.com/fraunhoferhhi/vvenc/wiki/FFmpeg-Integration, and then decoding it back, when I want to compare it with vmaf, or play it with ffplay, i get the following error Format yuv4mpegpipe detected only with low score of 1, misdetection possible! [yuv4mpegpipe ⓐ 000001ce93ee4ec0] Header too large. (file path replaced with this text): Invalid argument I encoded it using this (...) -- https://media.xiph.org/video/derf/, https://github.com/fraunhoferhhi/vvenc/wiki/FFmpeg-Integration
16:03
Convert SDR-JPEG to HDR-AVIF [closed] - Jonas Janzen Newest 'ffmpeg' Questions - Stack Overflow

I would like to convert a jpg file into an avif file that is to be saved in HDR10-capable metadata (PQ curve, 2020 color space, 10 bit). The idea is to save normal SDR images in HDR-capable containers so that they can be displayed in all their glory on HDR-capable displays. I want to play with inverse tone mapping, to manipulate the output, so I implemented in Python via subprocess. So far I just want the input image to be saved in AVIF as HDR and look the same at the end as before, so that I can then make changes in the next step. I used the following command for (...) -- enter image description here, enter image description here
18:44
Using ffmpeg to resync an encoded video [closed] - Marc Mouton Newest 'ffmpeg' Questions - Stack Overflow

I am encoding a few videos with av1an and svt-av1-psy. I have one file with audio that goes out of sync. I usually encode the audio in opus, but even remuxing the original stream result in out of sync. It seems the new av1 video is shorter of 831ms compare to original. Using mkvtoolnix to set -831ms and use the "correct video timing..." option result in a file that is not far of being well sync, but no quiet perfect and the total lenght of the video is even shorter. So is there any way to use the original h264 video file as a reference for the new AV1 (...)
05:05
How to use CUDA to decode video in FFmpeg.AutoGen? - JongSeong Kim Newest 'ffmpeg' Questions - Stack Overflow

FFmpeg.AutoGen version: 7.0 Following is similar with Program.cs in "FFmpeg.AutoGen.Example" directory. var sourceSize = vsd.FrameSize; var sourcePixelFormat = AVPixelFormat.AV_PIX_FMT_CUDA; var destinationSize = sourceSize; var destinationPixelFormat = AVPixelFormat.AV_PIX_FMT_BGRA; VideoFrameConverter vfc = new VideoFrameConverter(sourceSize, sourcePixelFormat, destinationSize, destinationPixelFormat); However, when 'ffmpeg.sws_getContext' is called, ffmpeg shows below error message. ffmpeg error message: [swscaler ⓐ 000001b7af30aa00] (...)
00:47
Sample rate conversion doesn't work (SWR) - kitty uwu Newest 'ffmpeg' Questions - Stack Overflow

I need to write function in C that changes sample rate of one audio channel (float linear array). I have this now: int resample_audio(float *audio_input, int input_sample_rate, int output_sample_rate, int input_num_of_samples, float *audio_output, int *result_num_of_samples) SwrContext* swr_ctx = swr_alloc(); if (!swr_ctx) fprintf(stderr, "Could not allocate SwrContext\\n"); return -1; av_opt_set_int(swr_ctx, "in_channel_layout", AV_CH_LAYOUT_MONO, 0); av_opt_set_int(swr_ctx, "out_channel_layout", AV_CH_LAYOUT_MONO, 0); (...)

26 April

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

06:09
How to play streaming media of rtmp/rtsp protocol in .NET MAUI Android/iOS? [closed] - han zhu Newest 'ffmpeg' Questions - Stack Overflow

As far as I know, there are many solutions on Windows (winform/wpf). The most typical ones are to call the libvlcsharp and ffmpeg libraries. However, for .NET MAUI Android/iOS, I have not found the corresponding support library at present. In fact, my purpose seems very simple. I want to use MAUI to implement a real-time streaming media player that can support the rtmp/rtsp protocol. Does anyone know of any good solutions? Thanks I tried the MediaElement from the community toolkit but it doesn't support rtmp so I'm hoping to find a solution to support rtmp live streaming in (...)
18:30
FFmpeg RTSP Recording: Video Timestamp Does not Match With Recorded MP4 File Timestamp [closed] - lastpeony4 Newest 'ffmpeg' Questions - Stack Overflow

I'm currently testing by streaming a 30 fps example flv video using a local Happy-Time RTSP server. This is the flv file i am streaming with RTSP: I recorded the video with below ffmpeg command: ffmpeg -i rtsp://127.0.0.1:6555/test30fps.flv -c copy test30fps.mp4 The resulting video appears visually satisfactory, yet there's a discrepancy between the displayed time on the video and the actual duration of the video file. Although the MP4 file duration is correct (endRecordingTimeMs-startRecordingTimeMs= mp4 file duration), the time displayed within (...) -- ,
14:11
Multithreading decoding A/V streams via FFmpeg + JNI + Android NDK causes artifacts - tretdm Newest 'ffmpeg' Questions - Stack Overflow

It would seem that if I mute the callback for reading the audio buffer, then they disappear. FFmpeg decoding issues in picture I'll attach the code below to make it easier for you to understand what the problem is: ffwrap.cpp static void *audioDecoderThread(void *arg) AudioDecoder *audioDec = (AudioDecoder*) arg; audioDec->prepare(); audioDec->start(); static void *videoDecoderThread(void *arg) VideoDecoder *videoDec = (VideoDecoder*) arg; videoDec->prepare(); videoDec->start(); // ... void (...) -- FFmpeg decoding issues in picture
09:01
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 (...)
02:40
Decode MPEG-2,4 AAC LATM Bitstream to .wav files [closed] - buliet suka Newest 'ffmpeg' Questions - Stack Overflow

I'm tring to use ffmpeg to transform the AAC LATM raw data to WAV file(or mp4 file), but it shows Error. Is the command correct? enter image description here Part of the raw data: enter image description here I use ffmpeg to change AAC ATDS file to mp4 file, succeed. enter image description here Part of the ATDS file: enter image description here Maybe the raw data format is not correct, but I dont know how to change it. Please help (...) -- enter image description here, enter image description here, enter image description here, enter image description here

25 April

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

13:43
Difficulty getting the expected output for .avi conversions to .mp4 using FFMPEG [closed] - Ericel Newest 'ffmpeg' Questions - Stack Overflow

I am trying to write a video converting script that converts an input video file to .mp4 output. I am using ffmpeg libx264 encoder. Unfortunately, when I convert from .avi to .mp4, the output video is not smooth, a little skippy. Here is how I set up the encoder code: AVCodecContext *Video::setupVideoEncoder(const AVCodec *encoder, AVStream *inVideoStream, AVFormatContext *outFormatCtx) AVCodecContext *codecCtx = avcodec_alloc_context3(encoder); if (!codecCtx) std::cerr << "Failed to allocate the video codec context." << std::endl; return (...)
22:17
How do I include FFMpeg for development in a windows program? - Lama Mao Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to follow a tutorial about using the FFMpeg libraries to extract frames from videos in C++ (by Bartholomew). In order to include the libraries, according to the tutorial, it is advised to use pkg-config to find the libraries and put them together so that CMake can include them. In the video he uses homebrew to install ffmpeg and somehow pkg-config is able to find the header files for ffmpeg (libavcodec, libavformat, libavdevice ...) The problem is I don't know how to get the ffmpeg libraries installed so that pkg-config can find them. On (...) -- by Bartholomew
20:02
How to copy CUdeviceptr planes from FFmpeg AVFrame into my own CUDA memory? - SexyBoooom Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to copy a frame planes decoded by FFmpeg(CUDA) into my own CUDA memory, but i tried a lot of times and all failed. 1, from FFmpeg doc, it says: /// HW acceleration through CUDA. data[i] contain CUdeviceptr pointers exactly as for system memory frames. ⓐAV_PIX_FMT_CUDA = 117 that means AVFrame.data[n] are the CUdeviceptr to copy from. 2, i have created my own CUDA memory without problem: var dstPtr = new CUdeviceptr(); var error = cuMemAlloc_v2(ref dstPtr, length); 3, try to copy from AVFrame into dstPtr, but failed: var (...) --
17:26
Error with FFmpeg and FS in React: "ErrnoError: FS error" - namwan Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a React application where I'm using the ⓐffmpeg/ffmpeg library to compress images and videos. I'm facing an issue with the virtual file system (FS) when trying to read and write files using FFmpeg. I'm getting the following error: ErrnoError: FS error Here's the relevant part of my code: import React, useState from "react"; import FFmpeg from "ⓐffmpeg/ffmpeg"; const ffmpeg = new FFmpeg(); const fetchFile = async (filePath) => const file = await ffmpeg.readFile(filePath); alert("hello"); (...)

24 April

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

21:50
Video concatenation with ffmpeg and Java [closed] - Marco Antonio Manjarrez Fernan Newest 'ffmpeg' Questions - Stack Overflow

I have this code that automatically makes a couple of videos using ffmpeg. The result is 2 or 3 .mp4 files that consist of an audio and a still image. I want to concatenate these files automatically by using ffmpeg concat demuxer, but when the concatenation finishes the videos do concatenate, but the images are hyperimposed on top of one another. So instead of having 12 seconds of a cat image and 10 seconds of a skyscraper, I get 22 seconds of a cat image, and when I skip forward in the video the image changes to the skyscraper and doesnt change back. Every single tutorial I see has (...)
23:01
Discord bot transmitting audio not working - R5B3NBB Newest 'ffmpeg' Questions - Stack Overflow

this discord bot is supposed to join the users voice channel and play music, everything works except for it not transmitting audio. from what I can gather the error is happening somewhere between it playing the audio file and it being transmitted. any helps appreciated and I'm sure it's not on the discord bot side since I gave it admin permissions and it still didn't work. should also be mentioned that im not a veteran when it comes to JavaScript so if the error s obvious sorry. const Client, GatewayIntentBits, SlashCommandBuilder, MessageEmbed = (...)
20:02
2 files found with path 'lib/arm64-v8a/libc++_shared.so' from inputs...-react native - CrackerKSR Newest 'ffmpeg' Questions - Stack Overflow

I am trying to enable package of ffmpeg-kit-react-native in react-native. The sample commands given in the example executes successfully. But I want to use libwebp for converting gif files to webp which is under package named video. As instrcuted . I have to enable the package to use some libraries. 2.2.1 Enabling a Package on Android Edit android/build.gradle file and add the package name in ext.ffmpegKitPackage variable. ext ffmpegKitPackage = "" So I added a line in the node_module/ffmpeg-kit-react-native/android/build.gradle android (...) -- ffmpeg-kit-react-native, example, package, instrcuted
17:29
Try to concatenate videos using FFmpeg Package. My videos concatenate correctly but those that i record from fornt camera rotate 90' in concatenate - Ahmad Akram Newest 'ffmpeg' Questions - Stack Overflow

Here is my code where I pass a list of image paths that concatenate. I am facing an issue with the front camera video. When concatenated completely some videos rotate 90 degrees. Future mergeVideos(List videoPaths) async VideoHelper.showInSnackBar('Videos merged Start', context); String outputPath = await VideoHelper.generateOutputPath(); FlutterFFmpeg flutterFFmpeg = FlutterFFmpeg(); // Create a text file containing the paths of the videos to concatenate String fileListPath = '$(await (...)
15:01
Why the source order matters on working with multiple media sources in a single AVFormatContext? - Mehmet YILMAZ Newest 'ffmpeg' Questions - Stack Overflow

avformat_open_input() deletes the AVFormatContext* and returns -6 when the source order changes. I am trying to open multiple media sources dynamically with different(mixed) formats and codecs in a single context (AVFormatContext). My media sources are a BlackMagic DeckLink Duo SDI input as first source and an mp4 file or rtsp stream as second. When I order to open (avformat_open_input()) the source 2 (RTSP or MP4 file) at first and then open the BlackMagic DeckLink Duo, proceed as expected. But when I change the order, and first open the DeckLink and then try to open (...)
14:01
Decode AAC with FFmpeg in RTP packet - Tran Toan Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to decode AAC in RTP packet with FFmpeg. According to rfc document the RTP payload is audioMuxElement mapped directly. I try remove the RTP header and read the remaining bytes to AVPacket struct, but the avcodec_decode_audio4() returning error -1094995529. Here is the code: #include "stdafx.h" #include "stdio.h" #include "conio.h" extern "C" #ifndef __STDC_CONSTANT_MACROS #define __STDC_CONSTANT_MACROS #endif #include #include // compatibility with newer API #if LIBAVCODEC_VERSION_INT < (...) -- rfc document
08:59
How to create video editor to edit the video as fast as possible irrespective of size? [closed] - Mayur Newest 'ffmpeg' Questions - Stack Overflow

we wanted to build a video editor where we wanted to give the option to add watermarks, change the bitrate, resize the video, add frames inside the video, etc. We are using NodeJS for the backend, I have tried to achieve the same thing with the help of ffmpeg package in NodeJS, but it is taking too much time to get the edited video. Is there any better approach that I can follow to get this done as quickly as possible? The video size could be up to 1 GB. Server Configuration 4 CPU 8 GB (...)
07:26
Improving Performance and Quality of Screen Streaming(Headless) with FFMPEG and NVIDIA Hardware Acceleration [closed] - Dhairya Verma Newest 'ffmpeg' Questions - Stack Overflow

I am attempting to stream my screen to an RTMP URL using FFMPEG with X11 for screen capture and NVIDIA's hardware acceleration to enhance performance. Despite using NVIDIA acceleration, the stream is still experiencing lags and low-quality output. I've noticed that FFMPEG is utilizing only about 100MB of GPU memory, which seems low. Here's the command I'm currently using: ffmpeg -hwaccel cuvid -f x11grab -s 1920x1080 -i :1 -f pulse -i VirtualSink.monitor -c:v h264_nvenc -preset:v p1 -b:v 2500k -maxrate 2500k -bufsize 5000k -vf (...)
08:01
Slow execution of cuCtxDestroy causing Windows desktop freeze [closed] - sun Newest 'ffmpeg' Questions - Stack Overflow

I’m encountering a problem with the cuCtxDestroy function that seems to be causing my system to freeze and result in a black screen. I’m running Windows 11 on my computer, and I would appreciate any assistance in troubleshooting this issue. When I call cuCtxDestroy, it takes more than 10 seconds to complete, during which both the GPU and CPU appear to be stuck. Eventually, the screen goes black, and in some cases, the system may recover, while in other cases, it requires a system reboot. Here is some information about my system: Integrated Intel graphics card (...) --
06:55
Pass ffpmeg OpenCL filter output to NVenc without hwdownload? - w1th0utnam3 Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to do tonemapping (and resizing) of a UHD HDR video stream with ffmpeg. The following command: ffmpeg -vsync 0 -hwaccel cuda -init_hw_device opencl=ocl -filter_hw_device ocl -threads 1 -extra_hw_frames 3 -c:v hevc_cuvid -resize 1920x1080 -i "INPUT.hevc" -vf "hwupload, tonemap_opencl=tonemap=mobius:param=0.01:desat=0:r=tv:p=bt709:t=bt709:m=bt709:format=nv12, hwdownload,format=nv12,hwupload_cuda" -c:v hevc_nvenc -b:v 8M "OUTPUT.hevc" seems to work (around 200 FPS on an RTX 3080). However, I notice that it still uses one CPU core and (...)
05:47
idb & Ffmpeg hls video is taking lot of time to start creating video - aksh02 Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to capture a simulator's screen using idb & ffmpeg with the command idb video-stream --fps 15 --format h264 --compression-quality 1.0 --udid | ffmpeg -i pipe:0 -vcodec libx264 -threads 1 -crf 40 -preset ultrafast -f hls -g 30 -hls_list_size 0 -hls_time 5 -r 15 ./index.m3u8 This is taking around 15s to create the index.m3u8 file resulting in the loss of first 15 seconds of video. I've tried adding -tune zerolatency but this too has no effect. Idb starts video streaming right away on its own. Need help triaging why ffmpeg is (...)

23 April

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

13:10
Got Non-monotonic DTS in output stream 0:1 while concating videos using ffmpeg [closed] - ukkkkkk Newest 'ffmpeg' Questions - Stack Overflow

When I concat videos in this command: ffmpeg -f concat -safe 0 -i filelist.txt -c copy -y new.mp4 And filelist.txt is: file 'video1_new.mp4' file 'new3.mp4' file 'video2_new.mp4' I got [mov,mp4,m4a,3gp,3g2,mj2 ⓐ 0x7fe0eec052c0] Auto-inserting h264_mp4toannexb bitstream filter [mp4 ⓐ 0x7fe0eea04380] Non-monotonic DTS in output stream 0:1; previous: 9188352, current: 9187776; changing to 9188353. This may result in incorrect timestamps in the output file. This warning results in unpredictable things while (...)
22:42
Creating an FFMPEG command for setting all videos to the same size and adding an watermark? - DigiDuncan Newest 'ffmpeg' Questions - Stack Overflow

I'm writing a Java app that uses at some point an ffMPEG command in the console. This command needs to do the following: Take the input file from DDTV/episodes-unconverted/example.[mpg/avi] Make it 1280x780. (If it's 4:3, add pillar boxes, if it's 16:9... just you know do nothing I guess) Add the watermark DDTV/DDTVwatermark.png at 10px from the bottom, and 10px from the right, at 33% transparency to the video. Output it to (...)
21:48
I need help setting up a FFmpeg command that adds a small watermark in the bottom right of the first 5 seconds of multiple videos [closed] - hwm Newest 'ffmpeg' Questions - Stack Overflow

There are hundreds of videos that we'd like to add a small FFmpeg watermark to the bottom right during the first 5 seconds of each video. I don't know if there's a way to automate the command to all files in the folder, and if there is a way to make the output filename the same as the original video, or adding a -2 to the new filename. Some videos may have different file formats. Not sure if there's an app that can facilitate this for someone not well versed in programming, or can help do it to all the videos with one command. This could potentially be done in (...)
12:47
Generation thumbnail from video using ffmpeg [closed] - godvlpr Newest 'ffmpeg' Questions - Stack Overflow

Try to create thumbnail from video using ffmpeg This command work perfectly: ffmpeg -i test.mp4 -ss 00:00:00 -vframes 1 thumbnail.jpg But I need to push video to ffmpeg from stdin, and find solution with pipe: cat test.mp4 | ffmpeg -f mp4 -i pipe:0 -ss 00:00:00 -vframes 1 thumbnail.jpg But it's not work for me. Error: ffmpeg version 7.0 Copyright (c) 2000-2024 the FFmpeg developers built with Apple clang version 15.0.0 (clang-1500.3.9.4) configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.0 --enable-shared --enable-pthreads --enable-version3 (...)
17:09
ffmpeg xstack layout in python - konrad Newest 'ffmpeg' Questions - Stack Overflow

I want to stack a n x n videos in a grid using ffmpeg. eg.: 4x4, 10x10, 12x12, ... Since i have a lot of videos the ffmpeg command is generated in python and then sequentially processed. The xstack filter expects a layout, which is formated in this way: xstack=inputs=16:layout=0_0|0_h0|0_h0+h1|0_h0+h1+h2|w0_0|w0_h0|w0_h0+h1|w0_h0+h1+h2|w0+w4_0| w0+w4_h0|w0+w4_h0+h1|w0+w4_h0+h1+h2|w0+w4+w8_0|w0+w4+w8_h0|w0+w4+w8_h0+h1|w0+w4+w8_h0+h1+h2 For layouts (...) -- xstack
16:01
Saving RTP stream on file for later conversion to MP4 format - Alberto Pastore Newest 'ffmpeg' Questions - Stack Overflow

I need to acquire a short RTP video stream (15 to 90 seconds) on a local on-premise small device. The device is not capable of creating natively a MP4 file by itself. The device is simply saving RTP packets on a local dump file as received. This file is then sent to a remote server after the stream has ended. I have no control on the local device (I cannot change its software or its behavior). I need to convert this RTP "dump" file to MP4 format on the remote server, where I can run my own software. I am trying to figure out a quick&dirty way to perform this (...)
10:43
Thumbnail generation using golang+ffmpeg - godvlpr Newest 'ffmpeg' Questions - Stack Overflow

I try to generate thumbnail from video mp4 using Golang+ffmpeg. Let me provide some steps: Tried to generate using terminal ffmpeg -i test.mp4 -ss 00:00:00 -vframes 1 thumbnail.jpg - all works successfully Tried to generate from golang and put result into stdout cmd := exec.Command("ffmpeg", "-i", "test.mp4", "-ss", "00:00:00", "-vframes", "1", "-f", "image2pipe", "-") - all works successfully Trying to open video using os.ReadFile and bytes.NewReader and after that - cmd := exec.Command("ffmpeg", "-i", "pipe:", "-ss", "00:00:00", "-vframes", "1", "-f", (...)
10:50
How to read an sdp file using python - Mubashir Newest 'ffmpeg' Questions - Stack Overflow

I am runnig following command to forward webcam using ffmpeg to a remote IP over a cellular network ffmpeg -i /dev/video0 -c:v libx264 -crf 35 -preset ultrafast -vf "eq=gamma=0.8" -f rtp "rtp://10.78.253.19:51372" following command generate an sdp file which I can save in a txt file and its icon chane into vlc which I can run on remote desktop to play/see video here is my sdp file view_camera.sdp v=0 o=- 0 0 IN IP4 127.0.0.1 s=No Name c=IN IP4 10.78.253.19 t=0 0 a=tool:libavformat 58.29.100 m=video 51372 RTP/AVP 96 a=rtpmap:96 (...)
05:31
Subtitle word scaling with ASS file causing line shifting - Barrard Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to make my subtitles scale one word at a time, but I'm running into an issue with the whole line shifting. Is there a way I can scale a word, and make the other words not move sue to the scale effect? Here is the ASS File [Script Info] ScriptType: v4.00+ PlayResX: 384 PlayResY: 288 ScaledBorderAndShadow: yes [V4+ Styles] Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, (...) -- https://youtube.com/shorts/d4VaoWqTMtQ?feature=share

22 April

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

14:54
ffmpeg output format mp3 not available [closed] - fazzal Newest 'ffmpeg' Questions - Stack Overflow

I am working on a Node.js application that uses ffmpeg to convert videos to mp3 files. I have installed ffmpeg full build (libmp3lame included), and I have configured the path to ffmpeg correctly in my application. However, when I try to convert a video to mp3, I get the error "Output format mp3 is not available. ffmpeg(inputPath) .outputOptions('-vn', '-ab', '128k', '-ar', '44100') .toFormat('mp3') .save(outputPath) .on('error', (err) => console.error(`Error converting (...)
10:16
FFMPEG: how to overlay a moving PNG with multiply blend effect (overlay filter + blend filter) [closed] - user24565885 Newest 'ffmpeg' Questions - Stack Overflow

I tried hunting for all existing questions and couldn't find a match :-( I have a video and a PNG image that I overlay on top of that. The PNG needs to move across the video (this I have working). But I want the PNG to use a "multiply" blend effect vs. a standard alpha overlay. Whenever I try to apply both filters I get an error. This code works and moves the image (the last one) across as expected: ffmpeg -i d6b5ec90-8823-41cf-9b81-3086ce83054a.mp4 -loop 1 -i 593e677d-02bb-49c2-a0c6-c3dd8f8c2f72.png -loop 1 -i 32fea58f-ebe1-447e-b079-06f8ebb9df52.png -loop 1 -i (...)
09:59
How to set stream's metadata for LAST audio stream with ffmpeg? [closed] - Tadeusz Newest 'ffmpeg' Questions - Stack Overflow

I want to add new audio stream (ONE) to some video file (which already has 1 or more audio streams): ffmpeg.exe -y -i "C:\\video.mp4" -i "C:\\video Fre.mp4" -c:v copy -c:a copy -map 0:v -map 0:a -map 1:1 -map_metadata 0 -metadata:s:a:0 language=eng -metadata:s:a:1 language=fre "C:\\result_1.mp4" Now I manually set language metadata for existing stream (-metadata:s:a:0 language=eng) and also manually set number for new audio stream (metadata:s:a:1). Is there any possibility set metadata for the LAST audio stream just like: -metadata:s:a:last language=fre And (...)
21:01
Using ffmpeg to convert all files to a subdir with same name [duplicate] - Marc Mouton Newest 'ffmpeg' Questions - Stack Overflow

I cannot manage to make a working script for this under Linux. Basically i want a script that execute a ffmpeg command and output the files to a subdirectory with the same name as the source. Long story short it is to convert audio from several mkv files, but i want to keep the same name and as ffmpeg doesn't overwrite files, i need to output them to a subdirectory. There is this answer : https://superuser.com/questions/912730/ffmpeg-batch-convert-make-same-filename?newreg=4676efc538b54a178fcbcc17e1fd2127 But the Linux solution: mkdir outdir for i in (...)
21:04
How to run FFMPEG with --enable-libfontconfig on Amazon Linux 2 - Adrien Kaczmarek Newest 'ffmpeg' Questions - Stack Overflow

Problem I want to run FFmpeg on AWS Lambda (Amazon Linux 2) with the configuration --enable-libfontconfig enable. Situation I already have FFmpeg running on AWS Lambda without the configuration --enable-libfontconfig. Here is the step I took to run FFmpeg on AWS Lambda (see official guide): Connect to Amazon EC2 running on AL2 (environment used by Lambda for Python 3.11) Download and package FFmpeg from John Van Sickle Create a Lambda Layer with FFmpeg Unfortunately, the version built by John Van Sickle doesn't have the configuration (...) -- see official guide, John Van Sickle, installation guide, ffmpeg-master-latest-linux64-gpl.tar.xz
13:27
Websocket connection in Docker - Akhil Varghese Newest 'ffmpeg' Questions - Stack Overflow

I have a Node.js app that takes an RTSP URL as input and provide a jsmpeg websocket stream as output. The focus of app is to generate a web compatible stream from an RTSP stream, and I have acheived this using a package rtsp-relay. The app is working fine in locally. But after dockerizing the app, I am not receiving the output stream. The stream is getting terminated. The log is The Dockerfile is: I am building the ffmpeg from source in docker. # Install necessary packages RUN apt-get update && \\ DEBIAN_FRONTEND=noninteractive apt-get (...) -- rtsp-relay, ,
09:55
ffmpeg "Manifest too large" when downloading youtube video - ynn Newest 'ffmpeg' Questions - Stack Overflow

TL;DR I'm trying to programmatically download a part of a YouTube video. The widely known procedure doesn't work for some videos and I'd like to overcome this situation. Context I'm trying to programmatically download a part of a YouTube video. As described in How to download portion of video with youtube-dl command?, you can achieve this by the following commands. #Converts a human-readable URL to longer URLs for internal use. ~ $ youtube-dl --get-url (...)
09:10
output stream video produced by ffmpeg gets divided into sections on screen upon streaming - Kaustubh Sonawane Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to combine cv2 frames with numpy audio array to produce a hls playlist. I'm giving input using pipe. The problem is that while streaming the output hls playlist produced by ffmpeg, the video screen is divided into 4 parts and the sizes of the 4 parts keep getting changed slowly. Also the audio is extremely distorted. Attaching images for reference: at timestamp 00:00 at timestamp 00:03 Here is the script I have written until now: import cv2 import subprocess import numpy as np import librosa def create_hls_playlist(width, (...) -- at timestamp 00:00, at timestamp 00:03
07:45
My ffmpeg library is not being recognised as in inter or external command when trying to convert a video in python [duplicate] - Shaahid Patel Newest 'ffmpeg' Questions - Stack Overflow

What im trying to do in python is to convert a 4k mkv video to 1080p mp4 video using the ffmpeg library. import subprocess def convert_4k_to_1080p(input_file, output_file): cmd = f'ffmpeg -i "input_file" -crf 18 -c:v libx264 -c:a aac -s 1920x1080 "output_file"' subprocess.run(cmd, shell=True) input_file = "c:/Users/Shaahid/Videos/Movies/Series/Arcane.S01E02.2021.2160p.UHD.WEB.AI.AV1.Opus.MULTi5-dAV1nci.mkv" output_file = "c:/Users/Shaahid/Videos/Movies/Series/Test.mp4" convert_4k_to_1080p(input_file, output_file) however i (...)
03:01
How to get the http status code after call avformat_seek_file of ffmpeg? - 砸石头的西西弗 Newest 'ffmpeg' Questions - Stack Overflow

How to get the http status code after call avformat_seek_file of ffmpeg to get a http url video? I have a video source which is provided as a http url link, I want to get a snapshot of it , so I call avformat_seek_file to find a frame, but I find that it returns value is not < 0, even if the http call not return 200 or 206, so I want to know how to get the response of http calling in avformat_seek_file.
01:21
FFmpeg player backporting to Android 2.1 - one more problem - tretdm Newest 'ffmpeg' Questions - Stack Overflow

I looked for a lot of information about how to build and use FFmpeg in early versions of Android, looked at the source codes of players from 2011-2014 and was able to easily build FFmpeg 4.0.4 and 3.1.4 on the NDKv5 platform. I have highlighted the main things for this purpose: and before Android 2.2 (API Level 8) such a thing did not exist this requires some effort to implement buffer management for A/V streams, since in practice, when playing video, the application silently crashed after a few seconds due to overflow (below code example in C++ and (...) -- not officially included in Android 2.1 and above, my written build script
01:49
How can I add ffmpeg to a .NET MAUI project for Android/iOS? - codybchaplin Newest 'ffmpeg' Questions - Stack Overflow

I have looking for solutions but just don't understand exactly what to do. There are several nuget packages that seem to be wrappers for ffmpeg but don't actually include ffmpeg itself such as FFMpegCore. I have been trying to follow the steps to build for Android from ffmpeg-kit, but it keeps failing and I am at a loss. Forgive my ignorance, but why is there no straightforward way to add ffmpeg to a .NET MAUI project that can be used on (...) -- FFMpegCore, ffmpeg-kit

21 April

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

13:27
How to properly specify font file for ffmpeg as it's always defaulting to Arial? [closed] - Jim Jans Newest 'ffmpeg' Questions - Stack Overflow

When calling ffmpeg it keeps defaulting to Arial-MT / Arial-BoldMT even when specifying a font. How do you correctly specify the fontfile? When specifying any font it will always default back: [Parsed_subtitles_0 ⓐ 000001915a83f800] fontselect: (DosisBold, 400, 0) -> ArialMT, 0, ArialMT I am calling ffmpeg with the following command: ffmpeg -i input.mp4 -vf subtitles='subtitle.srt':force_style='FontName=DosisBold,Alignment=10,Fontsize=24' output.mp4 -loglevel debug I have a file called "DosisBold.ttf" in the same folder as ffmpeg. I have (...)
17:12
ffmpeg - Remove first few seconds from one of the audio streams - David Davó Newest 'ffmpeg' Questions - Stack Overflow

I have a .mkv file with multiple audio and subtitle streams. One of these streams has unsynchronized audio, and I want to move it 10 seconds, how can I do it?
16:50
Capturing and streaming with ffmpeg while displaying locally - andrixnet Newest 'ffmpeg' Questions - Stack Overflow

I can capture with ffmpeg from a device, I can transcode the audio/video, I can stream it to ffserver. How can I capture and stream with ffmpeg while showing locally what is captured? Up to now I've been using VLC to capture and stream to localhost, then ffmpeg to get that stream, transcode it again, and stream to ffserver. I would like to do this using ffmpeg only.
16:46
How to extract the audio stream from an mp4 video file? - Joan Venge Newest 'ffmpeg' Questions - Stack Overflow

Basically I am using this python code but when I put the extracted audio stream below the video stream with the same audio, they don't line up. One interesting detail is when I used the video editor itself to save the entire audio in the project when I have only the video stream, MP3 format also has a delay/lag but when I used wav format, it matched the audio track of the video 100%. So I thought changing the code to export wav format would do the same but no. from pydub.utils import mediainfo from moviepy.editor import VideoFileClip def (...) --
14:41
Embedding Subtitles Permanently with ffmpeg [closed] - Mert Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg to embed subtitles into a video file with the following command: ffmpeg -i video.mp4 -i sub.srt -max_muxing_queue_size 1024 -c:v copy -c:a copy -c:s mov_text out.mp4 After that, the subtitles are exists on the out.mp4 This generates the out.mp4 file with subtitles. However, if I delete the sub.srt file, the subtitles no longer appear in out.mp4. It seems as though the subtitles aren't actually embedded into the video but are still dependent on the sub.srt file. How can I modify the ffmpeg command to ensure that the subtitles are permanently (...)
11:27
How do I use rust to read video (.mp4 or .mov) metadata on windows 11? [closed] - Hchap Newest 'ffmpeg' Questions - Stack Overflow

I want to be able to read the metadata of .mp4 and .mov files with rust on windows 11 to find the date that the video was taken, and failing that, the file creation date. I need a step-by-step guide on how to set up the dependencies for the solution - I have tried with ffmpeg and was unable to get it working with msys2, at first I have issues with PKG_CONFIG_PATH but I resolved those, and then I specified the location of the includes in msys2 in cargo.toml, which resolved ffmpeg-sys not being able to find header files. However, I was unable to resolve the issue that rust could (...)
11:30
Can we limit max fps by using FFMPEG? - Oleksandr Newest 'ffmpeg' Questions - Stack Overflow

I want to limit max fps when I process a video. For example: set limit up to 30 frames per second. If I process a video with 24 fps then I don't change fps but if I process the video with 60 fps then I change fps to 30. Can it be done by using only FFmpeg (with filters or something else)? I think that it can be done by using filter like this: -filter:v "fps=fps='min($CURRENT_FPS,30)'" But I don't know is it possible to get current fps from an (...)
11:04
ffmpeg concatenate a large number of videos with different codecs and resolutions - Paul H Newest 'ffmpeg' Questions - Stack Overflow

The videos I am trying to concatenate can have different technical metadata, like codec, resolution, etc. So I wrote a filtergraph that works for my purposes. My complete command can look like this: ffmpeg -i "vid1.mp4" -i "vid2.mp4" -i "vid3.mp4" -filter_complex_script "filtergraph.txt" -map "[outv]" -map "[outa]" -c:v libx264 -r 60 -preset medium -crf 24 -c:a aac -b:a 160k "output.mp4" And "filtergraph.txt" looks like this (autogenerated by my own script before). I have the filters to change all input resolutions to Full HD. (Newlines in the following snippet are (...)
10:55
How to concatenate multiple MP4 videos with FFMPEG without audio sync issues? - sb3k Newest 'ffmpeg' Questions - Stack Overflow

I have been trying to concatenate a number of MP4 clips (h264,aac) using the FFMPEG concat protocol documented here. The clips concatenate successfully, however there are multiple errors in the logs including: Non-monotonous DTS in output stream Past duration too large Additionally, it seems that the audio and video go slightly out of sync as more clips are added - though it is more noticeable on certain players (Quicktime & Chrome HTML5). Here is the code I am using, any tips would be appreciated! Convert each video to temp (...) -- here
06:56
Channel mapping in FFmpeg conversion of Dolby 7.1 mlp file to 8 channel wav file [closed] - Stan Duncan Newest 'ffmpeg' Questions - Stack Overflow

I have a file with 7.1 audio with the following channel mapping (viewed using MediaInfo): L R C LFE Ls Rs Lb Rb I want to convert it to an 8 channel riff64 wave file, so I'm using the following command: ffmpeg.exe -i "input.mlp" -rf64 auto -c:a pcm_f32le "output.wav" When I do this, the channel mapping in output.wav changes to (viewed using MediaInfo): L R C LFE Lb Rb Ls Rs I'm not sure if this is just a label that gets slapped on there, or if it actually changes the channel positions (i.e., rear surround come out of side surround speakers and vice (...)
01:00
Using FFMPEG and PHP to encode HLS video on the fly - mrsmith Newest 'ffmpeg' Questions - Stack Overflow

I'm re-encoding a MP4 video to HLS using FFMPEG with PHP. I'm trying to then directly serve to the output to a HTML page's tag. The following script (encode.php) encodes the video as I require and it works if I use the script url directly in VLC player for example but I'm struggling to get the gtml page to play it. The resulting video file should be compatible with most browsers. I use video.src = 'encode.php' on my player html page. Any help appreciated. <?php $input_video = 'whatever.mp4'; // video passthrough // (...)

20 April

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

23:52
Remove random background from video using ffmpeg or Python - Raheel Shahzad Newest 'ffmpeg' Questions - Stack Overflow

I want to remove background from a person's video using ffmpeg or Python. If I record a video at any place, detect the person in the video and then remove anything except that person. Not asking for green or single color background as that can be done through chromakey and I am not looking for that. I've tried this (https://tryolabs.com/blog/2018/04/17/announcing-luminoth-0-1/) approach but it is giving me output of rectangular box. It is informative enough as area to explore is narrow down enough but still need to remove total background. I've also tried (...) -- https://tryolabs.com/blog/2018/04/17/announcing-luminoth-0-1/, https://docs.opencv.org/4.1.0/d8/d83/tutorial_py_grabcut.html, http://oioiiooixiii.blogspot.com/2016/09/ffmpeg-extract-foreground-moving.html
23:35
Error in making animation through ffmpeg (python3.9) - Taehyung Ghim Newest 'ffmpeg' Questions - Stack Overflow

When I try to make 2D animation map for cow tracking(matching 2 camera views) through ffmpeg, following error occurs. raise subprocess.CalledProcessError(subprocess.CalledProcessError: Command '['ffmpeg', '-f', 'rawvideo', '-vcodec', 'rawvideo', '-s', '4000x4000', '-pix_fmt', 'rgba', '-r', '5', '-loglevel', 'error', '-i', 'pipe:', '-vcodec', 'h264', '-pix_fmt', 'yuv420p', (...)
23:13
Convert audio files to mp3 using ffmpeg [closed] - Hrishikesh 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, (...)
20:11
Extracting frame out of video based on time in seconds - Vicky Newest 'ffmpeg' Questions - Stack Overflow

I'm developing a web-based video editing tool where users can pause a video and draw circles or lines on it using canvas. When a user pauses the video, I retrieve the current playback time in seconds using the HTML5 video.currentTime property. I then send this time value along with the shape details to the server. On the server-side, we use FFmpeg to extract the specific paused frame from the video. The issue I'm encountering is a frame mismatch between the one displayed in the browser and the one generated in the backend using FFmpeg. I've experimented with various (...)
20:00
FFMPEG - Audio conversion from MP3 to M3u8 works for some songs, not for others. Look's like it's detecting video? - Kyle Orius Newest 'ffmpeg' Questions - Stack Overflow

Problem: I need to convert MP3s (of unknown Origin) into M3u8 files so that I can HLS stream them. This command here works for a song called 'jesussaves.mp3' ffmpeg -i ../jesussaves.mp3 -c:a aac -b:a 192k -ac 2 -f hls -hls_time 10 -preset ultrafast -flags -global_header master.m3u8 When I change it to use the song 'In my Darkest Hour' - (I've renamed the file to inmydh.mp3) - I only get one TS file output instead of multiple. The log is here: https://ibb.co/5nG0j01 Thank (...) -- https://ibb.co/5nG0j01
18:26
How to run FFMPEG with --enable-libfontconfig on Amazon Lambda - Adrien Kaczmarek Newest 'ffmpeg' Questions - Stack Overflow

Problem I want to run FFmpeg on AWS Lambda (Amazon Linux 2) with the configuration --enable-libfontconfig enable. Situation I already have FFmpeg running on AWS Lambda without the configuration --enable-libfontconfig. Here is the step I took to run FFmpeg on AWS Lambda (see official guide): Connect to Amazon EC2 running on AL2 (environment used by Lambda for Python 3.11) Download and package FFmpeg from John Van Sickle Create a Lambda Layer with FFmpeg Unfortunately, the version built by John Van Sickle doesn't have the configuration (...) -- see official guide, John Van Sickle, installation guide, ffmpeg-master-latest-linux64-gpl.tar.xz
14:38
How To Convert MP4 Video File into FLV Format Using FFMPEG - nipul_tech Newest 'ffmpeg' Questions - Stack Overflow

I have to convert an MP4 Video File into FLV format using FFMPEG which I received from different mobile device. I found most of the stuff to convert flv video into mp4 and all. Can any body help me out to convert mp4 format into flv using FFMPEG. I am using a Windows 7 64bit machine.
14:16
Rotate 90 and concatenate videos with ffmpeg - leonp Newest 'ffmpeg' Questions - Stack Overflow

I have several videos made in landscape and portrait modes. I want to concatenate them into one movie. For this I rotated portrait videos with: ffmpeg -i in.mp4 -vf transpose=1 out.mp4 Built the list of files to concatenate and concatenated all of them with: ffmpeg -safe 0 -f concat -i list.txt -c copy output.mp4 The result is unplayable. All players hang/crash at the first switch from landscape to rotated portrait fragment. What do I do wrong? In reply to LordNeckbeard request: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from (...)
08:26
How to skip start frames with ffmpeg - Darko_Milicic Newest 'ffmpeg' Questions - Stack Overflow

I have using ffmpeg to create short preview of videos... $length = $length_video/5; $ffmpeg_path." -i ".$content." -vf select='lt(mod(t\\,".$length.")\\,1)',setpts=N/FRAME_RATE/TB -af aselect='lt(mod(t\\,".$length.")\\,1)',asetpts=N/SR/TB -an ".$content_new."; Actually this will create 5sec. video. and problem is because first frame is extracted from 0-1 sec. There is any chance to skip first frame and extract next 5? Problem is because first frame is actually useless because of video (...)

19 April

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

16:12
Blend selected frames from a video and output an image with ffmpeg [closed] - xnx Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to blend a few frames from a video and output a png image using this command: ffmpeg -i input.mp4 -vf "select=between(n\\,2\\,5),blend=all_mode=average" -frames:v 1 out.png I get this error, but can't make sense of it: Simple filtergraph ... was expected to have exactly 1 input and 1 output. However, it had 2 input(s) and 1 output(s). Please adjust, or use a complex filtergraph (-filter_complex) instead. What am I doing (...)
09:27
FFMPEG merge multiple audio into video in specific time [closed] - Umar Newest 'ffmpeg' Questions - Stack Overflow

Right now i have: 1 - video (.mp4) N - audio with its timestamp start and end (.wav) I want to merge those audio to the video based on that time with still preserving the original video audio So that the final illustration will looks like this: audio ----aud1------aud2------aud3--------aud4---------audn-------> video+audio ------------------------------------------------------------> the audio position will be based on the time, i already have this data start=00:00:12.040,end=00:00:16.640 aud1 start=00:00:16.640,end=00:00:21.520 (...)
18:45
SNAP: Simulation and Neuroscience Application Platform [closed] - S_S Newest 'ffmpeg' Questions - Stack Overflow

Is there any documentation/help manual on how to use SNAP (Simulation and Neuroscience Application Platform)1. I wanted to run the Motor Imagery sample scenario with a .avi file for the stimulus instead of the image. How can that be done? The following error is obtained when using the AlphaCalibration scenario which gives code to play an avi file.Any help appreciated :movies:ffmpeg(warning): parser not found for codec indeo4, packets or times may be invalid. :movies:ffmpeg(warning): max_analyze_duration 5000000 reached at 5000000 :movies(error): Could (...) -- 1
18:24
Could not update timestamps for discarded samples - skltynve Newest 'ffmpeg' Questions - Stack Overflow

I have a function for decoding audio in C using ffmpeg: int read_and_decode(const char *filename, float **audio_buffer, int *sample_rate, int *num_samples) AVFormatContext *fmt_ctx = NULL; AVCodecContext *codec_ctx = NULL; AVCodec *codec; AVPacket packet; AVFrame *frame = av_frame_alloc(); if (!frame) fprintf(stderr, "Could not allocate memory for AVFrame\\n"); return -1; int audio_stream_index = -1, ret; if (avformat_open_input(&fmt_ctx, filename, NULL, NULL) != 0) fprintf(stderr, "Could not open the file: %s\\n", (...)
18:18
Error trying to decode 4K video using NVDEC - Nestoraj Newest 'ffmpeg' Questions - Stack Overflow

I am trying to convert a 4K HEVC MKV file of 70GB into another HECV file but with less size. I am using FFmpeg with Nvidia acceleration but when I execute the following command an error appears: ffmpeg -y -vsync 0 -hwaccel_device 0 -hwaccel cuvid -c:v hevc_cuvid -i input.mkv -c:a copy -c:v hevc_nvenc -preset slow -b:v 10M -bufsize 10M -maxrate 15M -qmin 0 -g 250 -bf 2 -temporal-aq 1 -rc-lookahead 20 -i_qfactor 0.75 -b_qfactor 1.1 output.mkv The error is: [hevc_nvenc ⓐ 0000021036b0d000] Provided device doesn't support required NVENC features Error (...) --
18:16
Problems with modifying encoder metadata with FFMPEG - yrcje Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to change FFMPEG encoder writing application with FFMPEG -metadata and for whatever reason, it's reading the input but not actually writing anything out. map_metadata -metadata:s:v:0 -metadata writing_application, basically every single stack overflow and stack exchange thread, but they all won't write to the file at all. ffmpeg -i x.mp4 -s 1920x1080 -r 59.94 -c:v h264_nvenc -b:v 6000k -vf yadif=1 -preset fast -fflags +bitexact -flags:v +bitexact -flags:a +bitexact -ac 2 x.mp4 ffmpeg -i x.mp4 -c:v copy -c:a copy -metadata (...)
18:13
Decoder error not supported error when render 360 video on web application - Mattia Pompita Newest 'ffmpeg' Questions - Stack Overflow

I'm developing a simple scene with A-Frame and React.JS where there is a videosphere that will create and render when video are fully loaded and ready to play. My goal is to render 4k (to device who can reproduce it) video on videosphere to show at the users the environment. On desktop versions all works fine also with 4K videos while on mobile works only for 1920x1080. I already check if my phone can render a 4k texture video and it can render untill 4096, I checked also that video.videoWidth are 4096. The error I have is with decoder MediaError code: 4, (...)
16:21
FFmpeg dynamic cropping using sendcmd correct syntax? - Sulli Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to dynamically crop a video using FFmpeg's sendcmd filter based on coordinates specified in a text file, but the crop commands do not seem to be taking effect. Here's the format of the commands I've tried and the corresponding FFmpeg command I'm using. Following the documentation https://ffmpeg.org/ffmpeg-filters.html#sendcmd_002c-asendcmd, commands in the text file (coordinates.txt) like this: 0.05 [enter] crop w=607:h=1080:x=0:y=0; 0.11 [enter] crop w=607:h=1080:x=0:y=0; ... Ffmpeg command: ffmpeg -i '10s.mp4' (...) -- https://ffmpeg.org/ffmpeg-filters.html#sendcmd_002c-asendcmd
13:19
Possible to copy PCR/PTS/DTS data between TS files? - muraliv Newest 'ffmpeg' Questions - Stack Overflow

I've 2 h264/aac stream TS files (say a.ts and b.ts) that have same duration and packet numbers. However PCR/PTS/DTS data of their audio/video stream packets are different. How do I copy PCR/PTS/DTS data from a.ts to b.ts using ffmpeg or other tools without actually overwriting the audio and video frames data? Ideally want to do this without re-encoding.
11:03
ffmpeg saving rtsp to mp4 file but video have a lot of green and gray block [closed] - UncleKing Newest 'ffmpeg' Questions - Stack Overflow

I use ffmpeg to save IPcam rtsp to mp4 , but the video have half green or gray , here is the paramter : ffmpeg -i "rtsp://192.168.0.37/live/1" -s 1920x1080 -filter:v "fps=fps=15,drawtext=text='test':fontcolor=red:fontsize=32:x=(w-text_w)/2:y=(h-text_h)/2" -crf 36 -preset ultrafast -vcodec libx264 -an -t 10 -f mp4 tmp.mp4 and here is the strange video I need to know what's wrong ? my ipcam setting is: H264 , 2560*1440 , 20fps , fixed rate 4096Kbps , Iframe 2 seconds , (...) --
11:18
Flutter error in Ffmpeg, "Unhandled Exception: ProcessException: No such file or directory" in macOS desktop version - pratik vekariya Newest 'ffmpeg' Questions - Stack Overflow

I'm trying video trim video using ffmpeg, for macOS desktop application. I have downloaded ffmpeg from here for macOS. Here is my code String mainPath = 'Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug/'; mainPath = mainPath.substring(0, mainPath.lastIndexOf("/")); Directory directoryExe3 = Directory("$mainPath"); var dbPath = path.join(directoryExe3.path, "App.framework/Resources/flutter_assets/assets/ffmpeg/ffmpegmacos"); //here in "Products/Debug/" folder desktop app will (...) -- here
10:28
How to make only words (not sentences) in SRT file by AssemblyAI - flip Newest 'ffmpeg' Questions - Stack Overflow

Okay... So Im trying to create a video making program thing and I'm basically finished but I wanted to change 1 key thing and don't know how to... Here's the code: import assemblyai as aai import colorama from colorama import * import time import os aai.settings.api_key = "(cant share)" print('') print('') print(Fore.GREEN + 'Process 3: Creating subtitles...') print('') time.sleep(1) print(Fore.YELLOW + '>> Creating subtitles...') transcript = aai. (...)
09:19
ffmpeg: convert subtitles from "hdmv_pgs_subtitle" to "mov_text" (needed in MP4) - rgr Newest 'ffmpeg' Questions - Stack Overflow

Is there any way to convert subtitles from "hdmv_pgs_subtitle" to "mov_text" (needed in MP4). I try: ffmpeg.exe i "%%F" c copy -scodec mov_text "test.mp4" but I get: Error while opening encoder for output stream #0:2 - maybe incorrect parameters such as bit_rate, rate, width or height Stream properties: Duration: 00:01:48.14, start: 4199.920000, bitrate: 12394 kb/s Program 1 Stream #0:0[0x1011], 169, 1/90000: Video: h264 (High), 1 reference frame (HDMV / 0x564D4448), yuv420p(top first, left), 1920x1080 (1920x1088) [SAR (...)
04:54
ffmpeg timelapse resets PTS on frame size change - Ral Newest 'ffmpeg' Questions - Stack Overflow

I have 601 sequential images, they change size and aspect ratio on frame 36 and 485, creating 3 distinct sizes of images in the set. I want to create a timelapse and shave off the first 200 frames and only show the remaining 401, but if I do a trim filter on the input, the filter treats each of the 3 sections of different sized frames as separate 'streams' with their own reset PTS, all of which start at the exact same time. This means the final output of the below commmand is only 249 frames long instead of 401. How can I fix this so I just get the final 401 (...)

18 April

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

18:58
How to create an encoding ladder for any aspect ratio? - volume one Newest 'ffmpeg' Questions - Stack Overflow

For a given video uploaded by a user, I need to create three versions of it to cover standard definition (SD), high definition (HD), full high definition (FHD), and ultra high definition (UHD e.g. 4K). "resolution/encoding ladders" for standard aspect ratios like 16:9 and 4:3. For 4:3 we might have: 640 x 480 960 x 720 1440 x 1080 2880 x 2160 For 16:9 we might have: 854 x 480 1280 x 720 1920 x 1080 3840 x 2160 If a user uploads a file in either of those aspect ratios, we can create the four different versions because the resolution (...)
18:15
ffmpeg: `ffmpeg -i "/video.mp4" -i "/audio.m4a" -c copy -map 0:v:0 -map 1:a:0 -shortest "/nu.mp4"` truncates, how to loop audio to match videos? [closed] - Swudu Susuwu Newest 'ffmpeg' Questions - Stack Overflow

This is with "FFmpeg Media Encoder" from Google Store (Linux-based Android OS), but it has all the commands of ffmpeg for normal Linux. shortest truncates the video to match the audio, and -longest has the last half of the video not have audio (for videos twice as long as audio,) what to use to loop audio (to match length of video with this)? Video length is 15:02, so used ffmpeg -i "/audio.m4a" -c copy -map 0:a:0 "/audionew.m4a"-t 15:02 -stream_loop -1`, but got (...)
17:55
Replacing avcodec_decode_video/avcodec_decode_video2 with currently supported functions - Silverstock Newest 'ffmpeg' Questions - Stack Overflow

I am trying to build a C++ program, and the creator is using depreciated functions, I have been replacing them fairly easily, but I am not totally sure how to replace these. This is a sample from the decode file: #if defined HAVE_AVCODEC_SEND_PACKET && defined HAVE_AVCODEC_RECEIVE_FRAME AVPacket* pkt = av_packet_alloc(); if (!pkt) return 0; pkt->data=data; pkt->size=datalen; int ret = avcodec_send_packet(codecContext, pkt); while (ret == 0) ret = avcodec_receive_frame(codecContext,frameIn); if (ret != 0) (...)
17:46
Splitting my code into OpenCV and UDP and the differences between using OpenCV and UDP - Sagiv Shaniv Newest 'ffmpeg' Questions - Stack Overflow

1) I wrote a Python code to receive video in real-time, compress it, duplicate the video, and then send it to OpenCV and UDP using ffmpeg. I would like to know how I can duplicate the code to send it to both UDP and OpenCV (without sending it to another device) without affecting the frame rate. This is the code I used so far: import subprocess import cv2 # Start ffmpeg process to capture video from USB, encode it in H.264, and send it over UDP and to virtual video device ffmpeg_cmd = [ 'ffmpeg', '-f', 'v4l2', # Input format (...)
14:23
Why is FFProbe (using fluent-ffmpeg) returning incomplete and inaccurate metadata? - volume one Newest 'ffmpeg' Questions - Stack Overflow

I am returning metadata about a file using ffprobe. The file can be found here. I am using fluent-ffmpeg in Node.js which shouldn't make any difference. Its just nicer to use than a command-line. The code goes like this: ffmpeg.ffprobe('https://devxxx001.s3.amazonaws.com/vertical-hd_720_1280_30fps.mp4'), function (err, metadata) console.log(JSON.stringify(metadata)); ); The metadata output I receive is this: "streams": [ "index": 0, "codec_name": "h264", "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 (...) -- found here
10:02
How to use the latest version of ⓐffmpeg/ffmpeg in a React.js project? - Muzammil Raza Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a React.js project where I need to process videos in the browser using ⓐffmpeg/ffmpeg. I noticed that the package has been updated recently, and the API and functions have changed. In the older version, I used to import the package and functions like this: import createFFmpeg, fetchFile from 'ⓐffmpeg/ffmpeg'; However, in the latest version, I see that the import has changed to: import FFmpeg from 'ⓐffmpeg/ffmpeg'; and all new functions are changed I have checked in by log: I have check by console ffmpeg, it (...)
07:49
FFmpeg - record from stream terminating unexpectedly using kokorin/Jaffree ffmpeg wrapper for Java - pyrmon Newest 'ffmpeg' Questions - Stack Overflow

I am programming a Spring Boot Application using Maven and Java 21. I am trying to record a stream from a url and save it to a mkv file. I intend to do this with kokorin/Jaffree in version 2023.09.10. The recording seems to work ok, however longer videos are terminating unexpectedly. Sometimes after 5 minutes, other times an hour or even longer. Sometimes with Exit Code 0 and sometimes with 1. I have implemented the recording like this: ⓐOverride public void startRecording(RecordingSchedule recordingSchedule) logger.info("Starting recording for schedule with filename (...)

17 April

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

22:58
JPG Right Colors [closed] - user1897354 Newest 'ffmpeg' Questions - Stack Overflow

For this type of video, do I get the right colors for jpgs? Color space : YUV Chroma subsampling : 4:4:4 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 For the video, I tried making jpegs using this code, but the colors did not match: ffmpeg -i input.mkv -vf zscale=min=709:m=170m:rin=limited:r=full,format=yuv444p -qmin 1 -qmax 1 -q:v 1 output%03d.jpg
21:15
Split mp4 in chunks and stream to the browser? - Paul Newest 'ffmpeg' Questions - Stack Overflow

I have a regular mp4 file which I need to store into smaller chunks in separate locations, what's the proper way of splitting the file and then have the browser be able to play it by requesting chunks? I'm a bit confused about segments and fragments, can I do all of this with a single ffmpeg command? Something to split the file into 10s chunks and then still be able to stream it in the video tag by appending to the MediaStream buffer?
18:36
Remove video noise from video with ffmpeg without producing blur / scale down effect - Sucahyo Aji Newest 'ffmpeg' Questions - Stack Overflow

My videos are 1920x1080 recorded with high ISO (3200) using smartphone (to get bright view, backlight scene mode). It produce a lot of noise. I try many video filter but all of them produce blur similar to when we reduce the resolution in half then increase it back again. Is there a good video noise filter that only remove noise without producing blur? Because if it produce blur, I would prefer to not do any filtering at all. I have tried video filter: nlmeans=s=30:r=3:p=1 vaguedenoiser=threshold=22:percent=100:nsteps=4 (...) -- Part of the image
07:44
ffmpeg video created from images looks faded [closed] - Oscar Franco Newest 'ffmpeg' Questions - Stack Overflow

I'm creating a video from a series of png images I have generated. However, on the final video the colors look faded. Is there anyway to preserve the look of the images? Here is a sample image, it might be a little hard to tell due to compression but the hue of the green changes. Here are some of the commands I've used trying to get the colors to match: ffmpeg -framerate 60 -pattern_type glob -i 'capture/*.png' -c:v libx264 -preset slower -pix_fmt yuv420p -color_range tv -colorspace bt709 -color_primaries bt709 -color_trc iec61966-2-1 (...) -- ,
13:03
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 (...)
12:51
ffmpeg is making my audio and video frozen and I don't know why - Sdpro Newest 'ffmpeg' Questions - Stack Overflow

I'm using bunjs runtime to execute ffmpeg as terminal code but I don't know if my code is typescript code is wrong or ffmpeg is wrong and I'm using json file to get the clips correctly let videos = 0; let stepsTrim = ""; let concatInputs = ""; for (let i = 0; i < 40; i++) if (unwantedWords[i].keepORdelete === true) stepsTrim += `[0:v]trim=0:$ unwantedWords[i].start ,setpts=PTS[v$i];[0:a]atrim=0:$ unwantedWords[i].start ,asetpts=PTS-STARTPTS[a$i];[0:v]trim=$unwantedWords[i].start:$ (...)
11:27
Python OpenCV VideoCapture Color Differs from ffmpeg and Other Media Players - cliffsu Newest 'ffmpeg' Questions - Stack Overflow

I’m working on video processing in Python and have noticed a slight color difference when using cv2.VideoCapture to read videos compared to other media players. I then attempted to read the video frames directly using ffmpeg, and despite using the ffmpeg backend in OpenCV, there are still differences between OpenCV’s and ffmpeg’s output. The frames read by ffmpeg match those from other media players. Below are the videos I’m using for testing: test3.webm test.avi Here is my code: import cv2 import numpy as np import subprocess def (...) -- , , test3.webm, test.avi,
11:24
Segmentation Fault when calling FFMPEG on Lambda - but not locally - thiagogps Newest 'ffmpeg' Questions - Stack Overflow

I am trying to extract the next 30 seconds of audio from a live video stream on YouTube using AWS Lambda. However, I'm facing an issue where Lambda does not wait for an FFmpeg subprocess to complete, unlike when running the same script locally. Below is a simplified Python script illustrating the problem: import subprocess from datetime import datetime def lambda_handler(event, context, streaming_url): ffmpeg_command = [ "ffmpeg", "-loglevel", "error", "-i", streaming_url, "-t", "30", "-acodec", "pcm_s16le", "-ar", "44100", (...)
11:12
AWS Lambda Does Not Wait Until FFmpeg Subprocess Completes - thiagogps Newest 'ffmpeg' Questions - Stack Overflow

I am trying to extract the next 30 seconds of audio from a live video stream on YouTube using AWS Lambda. However, I'm facing an issue where Lambda does not wait for an FFmpeg subprocess to complete, unlike when running the same script locally. Below is a simplified Python script illustrating the problem: import subprocess from datetime import datetime def lambda_handler(event, context, streaming_url): ffmpeg_command = [ "ffmpeg", "-loglevel", "error", "-i", streaming_url, "-t", "30", "-acodec", "pcm_s16le", "-ar", "44100", (...)
10:53
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 (...)
09:04
How can we merge .cdg and .mp3 file in ffmpeg - Hemant Newest 'ffmpeg' Questions - Stack Overflow

I am trying to merge .cdg file and .mp3 file to make .mp4 file with help of ffmpeg. I am using following command: ffmpeg -i test.mp3 -i test.cdg -y test.MP4 MP4 file was created only with mp3 audio file. cdg file contain is missing
06:51
FFmpeg C++ API : Using HW acceleration (VAAPI) to transcode video coming from a webcam - nicoh Newest 'ffmpeg' Questions - Stack Overflow

I'm actually trying to use HW acceleration with the FFmpeg C++ API in order to transcode the video coming from a webcam (which may vary from one config to another) into a given output format (i.e: converting the video stream coming from the webcam in MJPEG to H264 so that it can be written into a MP4 file). I already succeeded to achieve this by transferring the AVFrame output by the HW decoder from GPU to CPU, then transfer this to the HW encoder input (so from CPU to GPU). This is not so optimized and on top of that, for the given above config (MJPEG => H264), I (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/vaapi_transcode.c
04:29
When usg ffmpeg to convert from .mp4 to .avi, how do I get the .avi files to contain the correct (trimmed) frames from the .mp4? - cassenav Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg to convert a batch of .mp4 videos to the .avi format from the command line. The .mp4 videos are all trimmed videos that are sub-videos of a longer video. I have basically segmented the longer video into small, non-overlapping chunks (or maybe with a couple milliseconds of overlap), and I want to convert all of these smaller chunks (.mp4) to .avi. However, I am running into an issue: the .avi files all contain a some additional frames at the beginning of each video which I explicitly trimmed in the .mp4 videos. I'm not sure what exactly is causing this problem or how (...)
00:59
In mp4/h264, why does duplicate a frame need intensive re-encoding with ffmpeg? - kwjsksai Newest 'ffmpeg' Questions - Stack Overflow

What I want to achieve is to duplicate all frames in 30fps.mp4 and result in a 60 fps video. I tried ffmpeg -i 30fps.mp4 -filter:v fps=60 out.mp4. It does what I want but with re-encoding. And the question is can it be done without re-encoding but only remux? The reason I'm asking is because intuitively speaking, we usually do shallow copy when same data is used multiple times. So can it be done? Does the codec/container even allow (...)

16 April

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

04:19
AVFilterGraph cancel initiating [closed] - KaisoHHH Newest 'ffmpeg' Questions - Stack Overflow

I am trying to use AVFilterGraph to filter render AVFrames from AVStream directly, but I'm facing a situation I might need to cancel the initiating since I may change the filter complex string frequently in a short time as the front end will change fast to adjust the filter complex string. And the init may take long because of my filter string includes some customized parts. I also thought about just async create other filter graph if I cannot just cancel the initiating process in avfilter_graph_parse_ptr. But I'm hesitant about memory leak it may cause. Wondering if (...)
19:41
How can I convert a ffmpeg command to the ffmpeg-python script? - leo87 Newest 'ffmpeg' Questions - Stack Overflow

I have a ffmpeg command for converting an audio file from .mpt to .aac and then combining it with a .mp4 video file to create a new video file, as shown below. I would like to convert these commands into a ffmpeg-python script. ffmpeg -i a.mp4 -vn -acodec copy a.aac ffmpeg -i v.mp4 -i a.aac -c:v copy -c:a copy -map 0:v:0 -map 1:a:0 output.mp4 Any suggestions on how to solve this problem please? Thanks in advance. I've managed to rewrite the first command in ffmpeg-python (it was easy) ( ffmpeg .input(a_input) .output('a.aac', (...)
20:43
Modify the ffmpeg command to work with more than one image - Koi Farm ĐaMi Newest 'ffmpeg' Questions - Stack Overflow

ffmpeg -y -i image.jpg -filter_complex "[0:v] scale=1280:-1,loop=-1:size=2,trim=0:40,setpts=PTS-STARTPTS,setsar=1,crop='w=1280:h=720:x=0:y=min(max(0, t - 3), (40 - 3 - 3)) / (40 - 3 - 3) * (ih-oh)'" unix.mp4 I want to edit the above command so it can be used for multiple images or a folder containing many images. And give all images used the same size and aspect ratio. Please help me, thank you everyone.
20:11
Cutting sections with -ss and -t is not frame accurate - Théo Champion Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg 6.0 to extract small sections from longer videos. According to the doc i can use the -ss option to specify the start time and the -t option to specify the duration and this should result in frame accurate cuts (since FFmpeg 2.1). However, in my testing i found that the cuts are not frame accurate. I'm using the following command: ffmpeg -ss 10 -i ffmpeg -ss 10 -i https://storage.googleapis.com/klap-assets/Frame%20Counter%20%5B4K%2C%2060%20FPS%5D%20%E2%80%93%200100.mp4 -t 10 -y -vcodec libx264 -acodec aac -movflags +faststart out2.mp4 -t 10 -y (...) -- the doc, a video
19:52
Attempting to use recursion, why does my code only download 4 videos and exit? - Andrew Atwood Newest 'ffmpeg' Questions - Stack Overflow

I am attempting to download videos from an API that I have access to. This should loop through all of the videos that were returned from the API call, save them to disc, use ffmpeg to verify the meta data from the API (this step is necessary because the API is sometimes returning incorrect information), then save attribution information and continue on if no error. However, my output from the below code is simple this: [] Download Done: 0 Saved 'Owner: Anthony �; Owner URL: https://www.pexels.com/ⓐinspiredimages' to animals.txt 13 0 Download Done: (...)
17:21
FFmpeg -ss parameter is the video duration, Output file is empty - noun nil Newest 'ffmpeg' Questions - Stack Overflow

The main function is to obtain the corresponding video frame based on the input seconds.Before processing, the duration of the video will be obtained to determine whether the input is within the duration range of the video. If so, the corresponding instruction will be executed. > ffprobe input.mp4 ... Duration: 00:00:28.05, start: 0.000000, bitrate: 1136 kb/s > ffmpeg -ss 00:00:28 -i input.mp4 -frames:v 1 output.png ffmpeg version 7.0 Copyright (c) 2000-2024 the FFmpeg developers built with Apple clang version 15.0.0 (clang-1500.3.9.4) configuration: (...)
17:05
ffmpeg: Unrecognized option 'alpha_quality' - László Monda Newest 'ffmpeg' Questions - Stack Overflow

I want to make transparent videos work in Safari, which doesn't support WebM for this purpose but only H265 with alpha transparency. According to this post, I used Shutter Encoder, but only some of its versions work for this purpose on Mac. Instead of using Shutter Encoder on Mac, I want to use ffmpeg on my Linux PC. Shutter Encoder uses the following command in the background: ffmpeg -threads 0 -hwaccel none -i input.mov -c:v hevc_videotoolbox -alpha_quality 1 -b:v 1000k -profile:v main -level 5.2 -map v:0 -an -pix_fmt yuva420p -sws_flags bicubic -tag:v hvc1 -metadata (...) -- this post, only some of its versions work
13:13
Anomaly in raw I420 video generated by GStreamer - Lea Newest 'ffmpeg' Questions - Stack Overflow

Situation I'm trying to convert RGBA image data to YUV420P in multiple threads, then send this data to a main thread which splits the data it receives from each thread into separate frames and combines them in order to a video. Currently, I'm using FFmpeg for this task but I've found GStreamer to do a quicker job at colorspace conversion than FFmpeg. Problem The raw video generated by GStreamer does not match the expectations for YUV 4:2:0 planar video data. To test this, I've made a raw RGBA test video of 3 red 4x4 (16 pixel) frames. ffmpeg -f lavfi (...) -- , which corresponds to yuv420p as per their documentation, , multifilesink
10:57
How can I decode audio-file with ffmpeg? [closed] - skltynve Newest 'ffmpeg' Questions - Stack Overflow

I need to decode audio-file in C using library ffmpeg so I have array of numbers. How can I do that?
10:05
sws_scale YUV --> RGB distorted image - Sami susu Newest 'ffmpeg' Questions - Stack Overflow

I want to convert YUV420P image (received from H.264 stream) to RGB, while also resizing it, using sws_scale. The size of the original image is 480 × 800. Just converting with same dimensions works fine. But when I try to change the dimensions, I get a distorted image, with the following pattern: changing to 481 × 800 will yield a distorted B&W image which looks like it's cut in the middle 482 × 800 will be even more distorted 483 × 800 is distorted but in color 484 × 800 is ok (scaled correctly). Now (...)
08:30
How to minimize the delay in a live streaming with ffmpeg - Pasquale C. Newest 'ffmpeg' Questions - Stack Overflow

i have a problem. I would to do a live streaming with ffmpeg from my webcam. I launch the ffserver and it works. From another terminal I launch ffmpeg to stream with this command and it works: sudo ffmpeg -re -f video4linux2 -i /dev/video0 -fflags nobuffer -an http://localhost:8090/feed1.ffm In my configuration file I have this stream: Feed feed1.ffm Format webm NoAudio VideoCodec libvpx VideoSize 720x576 VideoFrameRate 25 # Video settings VideoCodec libvpx VideoSize 720x576 # Video (...)
07:36
Image mask blur processing problem using ffmpeg - andrew kim Newest 'ffmpeg' Questions - Stack Overflow

I want to apply blur using masking to two or more points in the image. I want to use a circular or other type of blur in ffmpeg rather than a box blur. I wrote the ffmpeg code, but an error continued. When there is only one blur, it works correctly, but when there are two or more blurs, an error occurs. No matter how much I search, I can't figure it out, so I'd like to ask for help. The ffmpeg code I wrote is as follows. ffmpeg -i input.mp4 -i mask.png -filter_complex "` [1:v]scale=200:200,pad=1920:1080:(ow-iw)/1:(oh-ih)/1[pmask1]; (...)
07:29
does ffmpeg support yuv420sp12le (p012le) - qianqian zhang Newest 'ffmpeg' Questions - Stack Overflow

does ffmpeg support yuv420sp12le, like p010le, is the ffmpeg support p012le, i.e. 12bpp per component, U and V are interleaved. I see the pixfmt.h of version 5.0, seems there is no format p012le, I see format p016l, 16bpp per component.
08:55
FFmpeg C++ API : Using HW acceleration (VAAPI) to transcode video coming from a webcam [closed] - nicoh Newest 'ffmpeg' Questions - Stack Overflow

I'm actually trying to use HW acceleration with the FFmpeg C++ API in order to transcode the video coming from a webcam (which may vary from one config to another) into a given output format (i.e: converting the video stream coming from the webcam in MJPEG to H264 so that it can be written into a MP4 file). I already succeeded to achieve this by transferring the AVFrame output by the HW decoder from GPU to CPU, then transfer this to the HW encoder input (so from CPU to GPU). This is not so optimized and on top of that, for the given above config (MJPEG => H264), I (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/vaapi_transcode.c
06:48
fluent-ffmpeg video has stretched image - Martin Newest 'ffmpeg' Questions - Stack Overflow

I have an mp3 audio file and a jpg image file. I want to combine these two files into a new mp4. I have a working fluent-ffmpeg command that does exactly what I want, except somethings an image will be stretched in the final output video. It seems to happen consistently with jpgs I export from photoshop. Is there any way I can specify in my ffmpeg command to keep the same resolution of my image and not to stretch it? My function below: async function debugFunction() console.log('debugFunction()') //begin setting up ffmpeg const ffmpeg = (...) -- ,
06:04
Why does -filter:v fps=60 need re-encoding? - kwjsksai Newest 'ffmpeg' Questions - Stack Overflow

I mean, let's say 30 fps -> 60 fps. You just need to duplicate frames. Decode a frame and present it at 2 timepoints. I know mp4 can present a frame at different timepoints, right? So why is re-encoding needed? with h264 codec and heavy computing... I thought it could be just some metadata work. ffmpeg -i 30fps.mp4 -filter:v fps=60 out.mp4
03:23
ffmpeg Loop the short video so it can match the duration of the a long audio [closed] - andrew cummins Newest 'ffmpeg' Questions - Stack Overflow

I have a list of mp4 files and mp3 files in a directory. I need the following loop the short mp4 so it can match the duration of the mp3 file export mp4 file with new audio. But we want the mp4 in portrait mode. ffmpeg -stream_loop -1 -i video.mp4 -i audio.mp3 -map 0:v -map 1:a -preset slow -shortest -movflags +faststart output.mp4 I have this code in ffmpeg, but i would need to have output in portrait mode. the code works, but the issue is having the video output in portrait mode without stretching the (...)

15 April

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

22:15
scalable looping slideshow ffmpeg command - Martin Newest 'ffmpeg' Questions - Stack Overflow

I have the below ffmpeg command which takes a 2 hour mp3 file and four image files and combines them to renders a single mkv video file where the 4 images appear in a slideshow where each image is displayed for an equal amount of time. I am using these files: https://file.io/XjYl2DDrLn6b Since the video is 2 hours long ( 7200 seconds ) and there are 4 images, each image gets displayed for 7200/4 = 1800 seconds. The logic for determining how to loop these image files is within the 'filter_complex' part of my ffmpeg command. [0:a]concat=n=1:v=0:a=1[a]; Use the (...) -- https://file.io/XjYl2DDrLn6b
19:28
ffmpeg output with label 'v' does not exist in any defined filtler graph - David Royale Newest 'ffmpeg' Questions - Stack Overflow

Been trying to make this Python code work but it fails up until rendering the final part: import subprocess import re import os def detect_idle_sections(video_path): command = ['ffmpeg', '-i', video_path, '-vf', 'select=\\'gt(scene,0.1)\\'', '-vsync', 'vfr', '-f', 'null', '-'] output = subprocess.check_output(command, stderr=subprocess.STDOUT).decode('utf-8') idle_sections = [] duration = 0.0 for line in (...)
18:07
FMP4 moof box sequence number ordering - Daniel Newest 'ffmpeg' Questions - Stack Overflow

I wanted to do a basic fragmented mp4 broadcast program with avformat libs and HTML5 video and MSE. This is a live stream and I use avformat to copy h264 data to mp4 fragments. Here is my basic drawing of clients attaching to the stream: So, with words: C1J: First Client joins: avformat process starts ftyp, moov, moof, mdat boxes will be served to Client1 ftyp and moov atoms are both saved for later reuse C2J: Second Client joins (later in time): avformat process is ongoing (because it is (...) --
16:12
dockerized python application takes a long time to trim a video with ffmpeg - Ukpa Uchechi Newest 'ffmpeg' Questions - Stack Overflow

The project trims YouTube videos. When I ran the ffmpeg command on the terminal, it didn't take too long to respond. The code below returns the trimmed video to the front end but it takes too long to respond. A 10 mins trim length takes about 5mins to respond. I am missing something, but I can't pinpoint the issue. backend main.py import os from flask import Flask, request, send_file from flask_cors import CORS, cross_origin app = Flask(__name__) cors = CORS(app) current_directory = os.getcwd() folder_name = (...)
10:35
frame extracted from a video using opencv or ffmpeg is vague, picture i snip from video is clear - user11317826 Newest 'ffmpeg' Questions - Stack Overflow

I record a video from roadside, and I want to recognize plate license in video. but I find that if I extract every frame from video using python, the frame is too vague to recognize. I have tried opencv and ffmpeg -i input.mp4 -ss 00:00:10.000 -vframes 1 output.png ` but if I snip video every second the picture is clear what's the reason of this phenomenon, how can I fix it I have tried frame average, it didn't (...)
09:29
Make a video 10h long while keeping it lightweight in filesize - keanu_reeves Newest 'ffmpeg' Questions - Stack Overflow

I created an mp4 file with no sound that is 0:17 minutes long. I also have this mp3 file that is 3mins long. I'd like to make a 10h video with those two, while keeping the filesize small. (8-15mb). Is there a way to achieve that with ffmpeg?
09:28
the problem using "yt-dlp --download-sections" [closed] - talent Newest 'ffmpeg' Questions - Stack Overflow

I tried to use "yt-dlp --download-sections" to download specific segment of YouTube video. But I have confronted some error. If I use the cammand as followed, it will be ok, and download the whole video successfully. yt-dlp -P [path] [URL] But, if I add the "--download-sections" to download specific segment, it seems something wrong. the command is as followed. yt-dlp -P [path] --download-sections "*00:08:06-00:08:17" https://www.youtube.com/watch?v=6Vkmb4cUuLs the eccor message Plus, the operation system is Windows. And I have used (...) -- the eccor message, ffmpeg configuration
08:57
Multiple named pipes in ffmpeg - Toto Briac Newest 'ffmpeg' Questions - Stack Overflow

This question is the follow-up of this question In my application I want to modify various mp3 and then mix them together. I know I could do it with a single command line in FFmpeg but it can end up very messy since I need to use various filter on each sample and I have five of them. My idea is to edit each sample individually, save them into a pipe and finally mix them. import subprocess import os def create_pipes(): os.mkfifo("pipe1") os.mkfifo("pipe2") def create_samp(): sample= subprocess.run(["ffmpeg", "-i", (...)
08:00
Swift A script of macOS is not running on the M2 chip? - Muhammad Danish Qureshi Newest 'ffmpeg' Questions - Stack Overflow

I am making a macOS app using SwiftUI, app is working fine on mac Intel chip, mac Apple M1 chip but not working on the mac M2 chip. Below is the following code which is crashing on M2 chip for force unwrapping the data in String(data: data!, encoding: .utf8). I know that force unwrap is not suitable, but for testing purpose I am doing force unwrap. When I run the which ffmpeg in terminal it provides the path in result, no matter which mac terminal is (it always return actual path of ffmpeg), but when run this command from the swift Program it does not found anything and got (...) -- , ,
07:40
Joining realtime raw PCM streams with ffmpeg and streaming them back out - Nathan Ladwig Newest 'ffmpeg' Questions - Stack Overflow

I am trying to use ffmpeg to join two PCM streams. I have it sorta kinda working but it's not working great. I am using Python to receive two streams from two computers running Scream Audio Driver ( ttps://github.com/duncanthrax/scream ) I am taking them in over UDP and writing them to pipes. The pipes are being received by ffmpeg and mixed, it's writing the mixed stream to another pipe. I'm reading that back in Python and sending it to the target receiver. My ffmpeg command is ['ffmpeg', '-use_wallclock_as_timestamps', (...)
07:15
ffmpeg produces duplicate pts with "wallclock_as_timestamps 1" option on MKV - Jax2171 Newest 'ffmpeg' Questions - Stack Overflow

I need to get real time reference of every keyframe captured by an IP camera. The -wallclock_as_timestamps 1 option seems to do the trick for us, however we are forced to replace the TS output container with MKV to get a correct PTS epoch value 1712996356.833000. Here is the ffmpeg command used: ffmpeg -report -use_wallclock_as_timestamps 1 -rtsp_transport tcp -i rtsp://user:password1ⓐ192.168.5.21/cam/realmonitor?channel=1channel1[1]=1subtype=0 -c:v copy -c:a aac -copyts -f matroska -y rec.mkv The capture process runs without any relevant worning or error messages. (...)
06:00
FFMPEG vsync drop and regeneration - 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 (...)

14 April

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

18:39
Script doesnt recognize bars / length right for cutting audio , ffmpeg terminal - totzillarbeats Newest 'ffmpeg' Questions - Stack Overflow

This terminal script doesn't recognize bars / length right for cutting audio, maybe somebody knows what's wrong with the calculation ... Would be happy about any help the cutting already works! #!/bin/bash # Function to extract BPM from filename get_bpm() local filename="$1" local bpm=$(echo "$filename" | grep -oE '[0-9]1,3' | head -n1) echo "$bpm" # Function to cut audio based on BPM cut_audio() local input_file="$1" local bpm="$2" local output_file="$input_file%.*_cut.$input_file##*." # (...)
15:01
Cannot get ffmpeg to work after installing from homebrew - phizzy Newest 'ffmpeg' Questions - Stack Overflow

I installed ffmpeg through homebrew but when I try to run it, even just typing in ffmpeg I get the following error message: dyld: Library not loaded: /usr/local/lib/liblzma.5.dylib Referenced from: /usr/local/bin/ffmpeg Reason: Incompatible library version: ffmpeg requires version 8.0.0 or later, but liblzma.5.dylib provides version 6.0.0 Trace/BPT trap: 5 I've tried running brew update and brew upgrade but that didn't change anything. Running brew doctor the only error I get is: Warning: You have a curlrc file If you have (...)
14:18
script doesnt recognize bars / lenght right for cutting audio , ffmpeg terminal - totzillarbeats Newest 'ffmpeg' Questions - Stack Overflow

This Terminal script doesnt recognize bars / lenght right for cutting audio , maybe somebody knows whats wrong with the calculation :) Would be happy about any help the cutting already works ! #!/bin/bash # Function to extract BPM from filename get_bpm() local filename="$1" local bpm=$(echo "$filename" | grep -oE '[0-9]1,3' | head -n1) echo "$bpm" # Function to cut audio based on BPM cut_audio() local input_file="$1" local bpm="$2" local output_file="$input_file%.*_cut.$input_file##*." # Appends "_cut" (...)
12:13
ffmpeg failed to load audio file - Vaishnav Ghenge Newest 'ffmpeg' Questions - Stack Overflow

Failed to load audio: ffmpeg version 5.1.4-0+deb12u1 Copyright (c) Failed to load audio: ffmpeg version 5.1.4-0+deb12u1 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 12 (Debian 12.2.0-14) configuration: --prefix=/usr --extra-version=0+deb12u1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d (...)
09:23
webrtc to rtmp send video from camera to rtmp link - Leo-Mahendra Newest 'ffmpeg' Questions - Stack Overflow

i cant send the video from webrtc which is converted to bufferd data for every 10seconds and send to server.js where it takes it via websockets and convert it to flv format using ffmpeg. i am trying to send it to rtmp server named restreamer for start, here i tried to convert the buffer data and send it to rtmp link using ffmpeg commands, where i initially started to suceesfully save the file from webrtc to mp4 format for a duration of 2-3 minute. after i tried to use webrtc to send video data for every 10 seconds and in server i tried to send it to rtmp but i cant send it, but (...)
02:43
Why do my Windows filenames keep getting converted in FFMPEG? - GeneralTully Newest 'ffmpeg' Questions - Stack Overflow

I'm running a script that walks through a large library of .flac music, making a mirror library with the same structure but converted to .opus. I'm doing this on Windows 11, so I believe the source filenames are all in UTF-16. The script calls FFMPEG to do the converting. For some reason, uncommon characters keep getting converted to different but similar characters when the script runs, for example: 06 xXXi_wud_nvrstøp_ÜXXx.flac gets converted to: 06 xXXi_wud_nvrstøp_ÜXXx.opus They look almost identical, but the Ü and I believe (...)

13 April

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

04:22
Same FFmpeg command produces different Matroska MKV output file checksum [closed] - finefoot Newest 'ffmpeg' Questions - Stack Overflow

The following exemplary FFmpeg command takes an MP4 file, doesn't do any re-encoding, but simply writes the output to an MKV file: ffmpeg -i input.mp4 -c copy output.mkv If I run the same command twice, with two different output files: ffmpeg -i input.mp4 -c copy output1.mkv ffmpeg -i input.mp4 -c copy output2.mkv The resulting files will have differing checksums: aa46d308197cb08d71f271c61d5412ad output1.mkv 8b48c3ebdbf2384705fcb78e864d12e3 output2.mkv This difference disappears if I convert them back to an MP4 container: ffmpeg (...)
12:28
Extracting frames from a video does not work correctly [closed] - Al Tilmidh Newest 'ffmpeg' Questions - Stack Overflow

Using the libraries (libav) and (ffmpeg), I try to extract frames as .jpg files from a video.mp4, the problem is that my program crashes when I use the CV_8UC3 parameter, but by changing this parameter to CV_8UC1, the extracted images end up without color (grayscale), I don't really know what I missed, here is a minimal code to reproduce the two situations: #include extern "C" #include #include int main() AVFormatContext *formatContext = nullptr; if (avformat_open_input(&formatContext, "video.mp4", nullptr, nullptr) (...)
18:52
Why do my Windows filenames keep getting converted in Python? - GeneralTully Newest 'ffmpeg' Questions - Stack Overflow

I'm running a script that walks through a large library of .flac music, making a mirror library with the same structure but converted to .opus. I'm doing this on Windows 11, so I believe the source filenames are all in UTF-16. The script calls FFMPEG to do the converting. For some reason, uncommon characters keep getting converted to different but similar characters when the script runs, for example: 06 xXXi_wud_nvrstøp_ÜXXx.flac gets converted to: 06 xXXi_wud_nvrstøp_ÜXXx.opus They look almost identical, but the Ü and I believe also the (...)
17:10
conversion from YUV to RGB color - Prashant Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert FFMPEG's Intensity color map from yuv format to rgb. It should give you colors as shown in the color bar in the image. You can generate a spectrogram using command: ffmpeg -i words.wav -lavfi showspectrumpic=s=224x224:mode=separate:color=intensity spectrogram.png Here is the code: import numpy as np def rgb_from_yuv(Y, U, V): Y -= 16 U -= 128 V -= 128 R = 1.164 * Y + 1.596 * V G = 1.164 * Y - 0.392 * U - 0.813 * V B = 1.164 * Y + 2.017 * U # Clip and normalize RGB (...) -- FFMPEG's Intensity,
16:13
ffmpeg merge multiple audio files with offset and duration into a single video file [closed] - CLIFFORD P Y Newest 'ffmpeg' Questions - Stack Overflow

Trying to merge two audio files into a single video at specific offset and duration What I tried checked previous stack overflow questions and answers, no one matched my requirements, below is the command i tried ffmpeg -i 5a54b260-f8a0-11ee-99e0-2d7afd1305f3.mp4 \\ -i 62d24fb0-f8a0-11ee-99e0-2d7afd1305f3.wav \\ -i 76cf3190-f8a0-11ee-99e0-2d7afd1305f3.wav \\ -filter_complex "[1:a]adelay=0|0,atrim=0:18[a1trimmed]; \\ [2:a]adelay=20000|20000,atrim=0:10[a2trimmed];\\ [a1trimmed][a2trimmed]amix=inputs=2[aout]" \\ -map 0:v -map "[aout]" -c:v copy -c:a aac (...)
09:53
ffmpeg produce pts duplicati con "wallclock_as_timestamps 1" on MKV - Jax2171 Newest 'ffmpeg' Questions - Stack Overflow

I need to get real time reference of every keyframe captured by an IP camera. The -wallclock_as_timestamps 1 option seems to do the trick for us, however we are forced to replace the TS output container with MKV to get a correct PTS epoch value 1712996356.833000. Here is the ffmpeg command used: ffmpeg -use_wallclock_as_timestamps 1 -rtsp_transport tcp -i rtsp://admin:adminⓐ192.168.1.5/h264/ch1/main/av_stream -c:v copy -c:a aac -copyts -f matroska -y rec.mkv The capture process runs without any relevant worning or error messages. However, playing the captured video (...)
06:40
FFMPEG not turning a series of .ppm files into a video - Radiation Sky Playz Newest 'ffmpeg' Questions - Stack Overflow

I don't have much of an idea of what i'm doing. also i don't use stackoverflow so i still don't know what i'm doing xd I'm trying to do this: ffmpeg -framerate 45 -i screen_200x200_%d.ppm -c:v libx264 -r 30 -pix_fmt yuv420p output52234.mp4 and it's making this appear: jajooⓐjajoospc:~/Documents/fff$ ffmpeg -framerate 45 -i screen_200x200_%d.ppm -c:v libx264 -r 30 -pix_fmt yuv420p output52234.mp4 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) (...)
03:25
FFmpeg RTSP drop rate increases when frame rate is reduced - Avishka Perera Newest 'ffmpeg' Questions - Stack Overflow

I need to read an RTSP stream, process the images individually in Python, and then write the images back to an RTSP stream. As the RTSP server, I am using Mediamtx [1]. For streaming, I am using FFmpeg [2]. I have the following code that works perfectly fine. For simplification purposes, I am streaming three generated images. import time import numpy as np import subprocess width, height = 640, 480 fps = 25 rtsp_server_address = f"rtsp://localhost:8554/mystream" ffmpeg_cmd = [ "ffmpeg", "-re", "-f", "rawvideo", (...) -- https://github.com/bluenviron/mediamtx, https://github.com/FFmpeg/FFmpeg, https://github.com/bluenviron/mediamtx?tab=readme-ov-file#opencv

12 April

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

20:40
How do I upscale an iOS App Preview video to 1080 x 1920? [closed] - Benjamin Thiel Newest 'ffmpeg' Questions - Stack Overflow

I just captured a video of my new app running on an iPhone 6 using QuickTime Player and a Lightning cable. Afterwards I created an App Preview project in iMovie, exported it and could successfully upload it to iTunes Connect. Apple requires developers to upload App Previews in different resolutions dependent on screen size, namely: iPhone 5(S): 1080 x 1920 or 640 x 1136 iPhone 6: 750 x 1334 (what I have) iPhone 6+: 1080 x 1920 Obviously, 1080 x 1920 is killing two birds with one stone. I know that upscaling isn't the perfect (...)
21:55
How to get the buffer of the first frame of a video using ffmpeg? (Node.js) - Mahmoud Walid Newest 'ffmpeg' Questions - Stack Overflow

I am trying to use child_processes and ffmpeg to do this, but it returns this error: FFmpeg stderr: [AVFilterGraph ⓐ 00000157fd55abc0] No option name near 'eq(n, 0)"' [AVFilterGraph ⓐ 00000157fd55abc0] Error parsing a filter description around: [AVFilterGraph ⓐ 00000157fd55abc0] Error parsing filterchain '"select=eq(n\\, 0)"' around: [vost#0:0/libx264 ⓐ 00000157fd574700] Error initializing a simple filtergraph Error opening output file pipe:1. Error opening output files: Invalid argument FFmpeg process exited with code: (...)
17:01
how to record screen of windows using ffmpeg inside WSL [closed] - Santhosh Newest 'ffmpeg' Questions - Stack Overflow

I have WSL2 and ubuntu installed inside it. I have ffmpeg command line installed inside it. Now I am not sure how to record the screen. Can someone help me what command options to be used to record screen (including windows UI) I tried the below command. Opened powershell in windows, then entered into wsl and then ran the below command ffmpeg -f x11grab -y -framerate 30 -s 1920x1080 -i :0.0 -c:v libx264 -preset superfast -crf 18 out.mp4 but it results in blank screen (...)
14:24
Segmentation fault caused by FFMPEG / SFML on Macos - Med ali Damergi ReTr0 Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to code a basic video player function to use it in a game it's supposed to get a sfml window and a video link as inputs and run the video: extern "C" #include #include #include #include #include #include const AVCodec* pCodec = nullptr; void lecteurVideo(const std::string& videoPath, sf::RenderWindow& window) // Open the video file AVFormatContext* pFormatCtx = avformat_alloc_context(); if (avformat_open_input(&pFormatCtx, videoPath.c_str(), nullptr, nullptr) != 0) (...)
15:38
Streaming audio over websockets and process it with ffmpeg, Invalid frame size error - Nimrod Sadeh Newest 'ffmpeg' Questions - Stack Overflow

I am building an application in Python that processes audio data on a streaming connection with WebSockets. To work with it, I need to process it with ffmpeg on the server before passing it to some ML algorithms. I have the following ffmpeg code setup to process each byte sequence that comes over WebSockets: async def ffmpeg_read(bpayload: bytes, sampling_rate: int = 16000) -> np.array: ar = f"sampling_rate" ac = "1" format_for_conversion = "f32le" ffmpeg_command = [ "ffmpeg", "-i", "pipe:0", "-ac", ac, "-acodec", (...)
15:01
FFMPEG Partial Audio Filter of Video File - Cole Newest 'ffmpeg' Questions - Stack Overflow

I am trying to apply an audio filter to a section of the audio track on a video file. Here are some details. "video.mp4" is 1 minute and 36 seconds long. I want to lower the pitch of the first 30 seconds of the file. The video track does not need any change, so I can copy that and only transcode the audio. Note, I will have to do this same operation to other videos, with the pitch change at different times. This one is at the beginning, however. I have used this post for inspiration: (...)
16:10
Ffmpeg compilation fails due to undefined symbol _x264_encoder_open_112 for architecture x86_64 - S B Newest 'ffmpeg' Questions - Stack Overflow

I am compiling ffmpeg on Snow Leopard from source. Using Macport is not an option since I have some custom modification in ffmpeg. The make commands are: $ ./configure --enable-gpl --enable-libmp3lame --enable-static \\ --disable-shared --enable-libx264 --enable-pthreads \\ --disable-doc --enable-avfilter $ make The error: CC ffplay.o ffplay.c: In function ‘SDL_main’: ffplay.c:3157: warning: assignment discards qualifiers from pointer target type LD ffplay_g Undefined symbols for architecture x86_64: "_x264_encoder_open_112", (...)
13:37
Vulkan image data to AVFrames and to video - W4zab1 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to encode Vulkan image data into video with MPEG4 format. For some reason the output videofile is corrupted. FFProbe shows discontinuity in timestamps, and the frames are corrupted. First I prepare my video encoder Then I get FrameEnded events from my engine where I can get the image data from the vulkan swapchain. I then convert the image data from vulkan to AVFrames (RGBA to YUV420P), then I pass the frames into queue. This queue is then handled in another thread, where the frames are processed, and written into video. I am bit of a noob with ffmpeg, (...)
10:44
Error: Output format mp4 is not available - alpaca pwaa Newest 'ffmpeg' Questions - Stack Overflow

I'm using fluent-ffmpeg in my nextjs application, I'm trying to process the video and specified a format to stream on my s3 bucket but it keeps on failing. My terminal keeps on throwing "Error: Error: Output format mp4 is not available". I already verify my ffmpeg format "ffmpeg -format" and confirm that it supports encoding and decoding mp4 files. I've already tried solutions from other forums but it's not working for me. createVideo: privateProcedure .input( z.object( fileId: z.string(), ) ) .mutation(async ( ctx, input ) => (...)
09:42
how to build the binaries in ffmpeg-kit - Harpreet Singh.8052 Newest 'ffmpeg' Questions - Stack Overflow

hey I want to use the ffmpeg in my android app and I used the ffmpeg-kit In the README of the ffmpeg-kit for android they write the steps to create binary but I'm facing difficulty understanding thest steps First is -> to setup android SDK or NDK i have checked these in my Android studio and I also added these in my environment variables Second -> is to install different packages autoconf automake libtool pkg-config curl git doxygen nasm cmake gcc gperf texinfo yasm bison autogen wget autopoint meson ninja ragel groff gtk-doc-tools libtasn1 im using windows (...) -- ffmpeg-kit, here
07:37
Save incoming frames from camera to video using ffmpeg - Liza Yemini Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to record frames that I read from an industrial camera (such as - https://en.ids-imaging.com/store/u3-3680xle.html) in my C# code as bitmaps. I want to convert those bitmaps to video on the fly. My solution until now was -> Sending those bitmaps to a virtual camera (e2e soft vcam) and then record the camera with ffmpeg - using this command: -f dshow -i video=VCam -r 18 -vcodec libx264 Video.mp4 This is not working so well, because there are drop frames and the video is not smooth. There is another way to use ffmpeg for converting those images to (...) -- https://en.ids-imaging.com/store/u3-3680xle.html
07:57
Decode MP3, then increase the audio volume, and then encode the new audio - Blue Sky Newest 'ffmpeg' Questions - Stack Overflow

I want to first decode a MP3 audio file, and then increase the volume of the audio, and then encode it again into a new MP3 file. I want to use libavformat or libavcodec for this. Can you help me how I can do this? Any example?
03:36
Converting Multiple Videos from S3 into GIFs with Random Frames using Python and Lambda - rahulfaujdar Newest 'ffmpeg' Questions - Stack Overflow

I have a collection of videos stored in an S3 bucket, and I'm looking to automate the process of converting these videos into GIFs using Python and Lambda. Each resulting GIF should be precisely 10 seconds long and should contain random frames sampled from different parts of the corresponding video. By random frames, I mean frames from the beginning, middle, and end of each video, creating a dynamic GIF experience. I've started implementing this functionality using ffmpeg within a Python Lambda function, but I'm encountering difficulties in achieving the desired (...)

11 April

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

13:19
Cannot change AVOutputFormat.flags and AVInputFormat.flags with appropriate ones [closed] - peko geshkov Newest 'ffmpeg' Questions - Stack Overflow

This is fragment from my working code using to grab livestream from source url and transmux it. ..... ifmt_ctx=avformat_alloc_context();//init input AVFormatContext ..... ifmt_ctx->flags|=AVFMT_FLAG_NONBLOCK|AVFMT_FLAG_GENPTS|AVFMT_FLAG_DISCARD_CORRUPT;//set some flags .... ifmt_ctx->iformat->flags |= AVFMT_TS_DISCONT;//set other flags to AVInputFormat .... ofmt_ctx=avformat_alloc_context();//init output AVFormatContext .... ofmt_ctx->flags|= AVFMT_FLAG_GENPTS|AVFMT_FLAG_NONBLOCK|AVFMT_FLAG_DISCARD_CORRUPT;//set some (...)
03:16
ffmpeg can NOT decode the mp4 file, which only have one IDR frame, Why? [closed] - user21201490 Newest 'ffmpeg' Questions - Stack Overflow

I have a mp4 file, which have only one IDR frame, ffplay can NOT play it, ffprobe can NOT extract video frame, and ffmpeg can NOT decode it, why? I use ffmpeg7.0 to try, but it always fail. Is it ffmpeg bug and how to render the IDR frame?
20:55
Capture rtsp stream to MP4 file with wallclock timestamp preserve moov atom - Jax2171 Newest 'ffmpeg' Questions - Stack Overflow

We are looking for the right ffmpeg options to capture the rtsp stream from an IP camera using the real time in epoch from the wall clock as a timestamps reference. Our current command is as follows: ffmpeg -use_wallclock_as_timestamps 1 -rtsp_transport tcp -i rtsp://admin:adminⓐ192.168.5.21/h264/ch1/main/av_stream -c:v copy -c:a aac -copyts -f mp4 -y record.mp4 The command works perfectly well except that, if for any reason the ffmpeg process were to stop abruptly, the output file "record.mp4" is unreadable with error: moov atom not found We simulated (...)
18:29
How the ffmpeg is fixing Handle page termination with same page number ...? [closed] - adarsh Newest 'ffmpeg' Questions - Stack Overflow

Im working on the teletext subtitle feature and faced with subs not clearing issue. the subtitle lines remain displayed until being replaced by a new version of the specific line. So the subtitles never disappear and often an old line is still displayed, after another, more recent line is displayed/updated. take a look at the issue in this sample video file: https://code.videolan.org/videolan/vlc/uploads/58c2e1660e94e2df5e8cdb75edf531d9/GODFATHER__03_.ts Issue reported : https://sourceforge.net/p/zapping/bugs/203/ The player is using ffmpeg and libzvbi library. At (...) -- https://code.videolan.org/videolan/vlc/uploads/58c2e1660e94e2df5e8cdb75edf531d9/GODFATHER__03_.ts, https://sourceforge.net/p/zapping/bugs/203/, https://github.com/FFmpeg/FFmpeg/commit/b1e0e216462a989a39e7b413aef6d32f8cedc154, https://github.com/zapping-vbi/zvbi/commit/40a6ab0200c46b67b059b5b1fb15793ce780892a
12:07
Emulate YUV420 stream for OpenCV - Ivan Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a project that will treat the images coming from a camera in YUV420 format connected by ethernet. During the development, we can't have constant access to the camera so I wanted to emulate the behaviour. My idea is to take video, convert it from mp4 to yuv using ffmpeg: ffmpeg -i input.mp4 -pix_fmt yuv420p output.yuv Then, stream the video in an infinite loop. This works: ffmpeg -stream_loop -1 -f rawvideo -s 960x540 -r 30 -pix_fmt yuv420p -i output.yuv -f mpegts udp://127.0.0.1:23000 I managed to read (and show) the (...)
10:58
Python FFmpeg Video Streaming: how to capture multiple representations (resolutions) with webcam - LUKA TADIĆ Newest 'ffmpeg' Questions - Stack Overflow

I am trying to capture webcam stream and make HLS stream. I managed to create HLS stream for one Representation (only one stream resolution) but when I try to create (hls.output) more than one, I get this error: C:\\Users\\ltadic\\Desktop\\hls stream>C:/Users/ltadic/AppData/Local/Programs/Python/Python311/python.exe "c:/Users/ltadic/Desktop/hls stream/camera_stream.py" ERROR:root:ffmpeg failed to execute command: b"ffmpeg version 2022-12-11-git-c3e20f78b0-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers\\r\\n built with gcc 12.1.0 (Rev2, Built by MSYS2 project)\\r\\n (...)
07:58
statistics.getTime() returns always total time of input file in milli seconds during the process in android - Hamza Newest 'ffmpeg' Questions - Stack Overflow

In 6.0-2 android how can i get the percentage because statistics.getTime() returns always total time of input file in milli seconds during the process but it was working proper in previous version 4.4.LTS because in that version it was returning the time based on how much process has complete. Current behavior It is returning total time of input file every time. Here is the link of my test application https://github.com/HamzaBula/Reverse-Video-Demo [Here is the screenshot for 4.4.LTS (frame and time both are perfect here)] (https://i.stack.imgur.com/OEZED.png) (...) -- https://github.com/HamzaBula/Reverse-Video-Demo, https://i.stack.imgur.com/OEZED.png, Here is the screenshot for 6.0-2 (frame is perfect but time is not)

10 April

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

18:40
gstreamer cant demux a .ts video but ffmpeg can. How can I fix the error? - Zack Newest 'ffmpeg' Questions - Stack Overflow

I have a .ts video that when I run through a basic gstreamer pipeline I get an error that it can't demux the video. comand: gst-launch-1.0 filesrc location="/videos/my_video.ts" ! tsdemux ! meta/x-klv ! fakesink I get the error: Setting pipeline to PAUSED ... Pipeline is PREROLLING ... WARNING: from element /GstPipeline:pipeline0/GstTSDemux:tsdemux0: Delayed linking failed. Additional debug info: gst/parse/grammar.y(853): gst_parse_no_more_pads (): /GstPipeline:pipeline0/GstTSDemux:tsdemux0: failed delayed linking some pad of GstTSDemux (...)
16:02
FFMPEG command to write RTSP stream to file and make first frame screenshot - mao Newest 'ffmpeg' Questions - Stack Overflow

I'm writing RTSP-stream from IP-camera to HLS file with ffmpeg. Also I'm trying to make the first frame that comes when ffmpeg connects to camera written into separate PNG-file. I've found this command to achieve that: ffmpeg -rtsp_transport tcp -i rtsp://stream-url -an -hls_flags append_list -f hls -hls_playlist_type event -hls_list_size 0 -hls_segment_type mpegts -hls_segment_filename ./stream/%d.ts ./stream/index.m3u8 -frames:v 1 ./stream/thumbnail.png This command works well on Windows, writing HLS segments to stream folder and creating thumbnail.png (...)
14:35
Assign PTS to packet based on position in stream - user1055947 Newest 'ffmpeg' Questions - Stack Overflow

I have a TS with a video and metadata stream. The video has correctly set PTS values, while the metadata does not (ffprobe gives N/A for each). However, the metadata packets are positioned correctly in the stream. Is there a way I can assign the metadata packets a PTS based on their position in the stream. The exact precision is not important, as long as the PTS is somewhere in between the last and next video frame. As a last resort I will have to write some C code to do it, but I wanted to see if the ffmpeg frontend can do it. I need to do this because I need to offset one (...)
14:04
How to create video by stitching together images (.png) where the serial on each image file increases by 6 - DataStatsExplorer Newest 'ffmpeg' Questions - Stack Overflow

I am trying to create a video (preferably mp4) from a series of png images. However, the name of each image file increases by 6 every frame. For example, I would have depthframe_0000 as the first frame, and depthframe_0001 for the next frame. There are a few answers that have answered a similar question but I am unable to process the video when the image files are not increasing by 1. I would like to keep the fps at 5. I am using ffmpeg as the suggested in the answers above but am open to any other suggestion. The collab code that I have put together is as (...)
12:56
ffmpeg doesn't generate a ISO/IEC 14496-17 (MPEG-4 text) track when ingesting WebVTT subtitles to produce MPEGTS - Daniel Andres Pelaez Lopez Newest 'ffmpeg' Questions - Stack Overflow

We are trying to create a mpegts with an ISO/IEC 14496-17 (MPEG-4 text) subtitles track, using WebVTT, but seems like ffmpeg creates a ISO 13818-1 PES private data instead. The following is the ffmpeg command: ffmpeg -i subtitle.vtt -c:s mov_text -f mpegts output3GPP.ts This is using the following subtitle.vtt file: WEBVTT 00:00.000 --> 00:01.000 Subtitle 1 00:01.000 --> 00:02.000 Subtitle 2 00:02.000 --> 00:03.000 Subtitle 3 00:03.000 --> 00:04.000 Subtitle 4 And the following is the output of the ffprobe (...)
12:38
How to save fluent-ffmpeg output to URL? - volume one Newest 'ffmpeg' Questions - Stack Overflow

I am using fluent-ffmpeg to process videos and I want to save the final output file to a remote URL, not on the local server. Here is the code: ffmpeg('/path/to/file.mp4') .videoCodec(VideoCodec) .audioCodec(AudioCodec) .format('mp4') .output('http://localhost:8080/output.mp4') // This does not work at all .output('output.mp4') // this works but saves file locally which I'm not allowed to do .run(); How can I save the file directly to a remote location (that is, without saving it locally)? I (...) -- fluent-ffmpeg
11:53
Separating audio m4b file based on a cue file - Rick T Newest 'ffmpeg' Questions - Stack Overflow

Separating audio m4b file based on a cue file How can I split an audio m4b into separate files using a cue file? Note: The m4b file has no chapters that's why I need to use the cue file to split it. I did try AI but that didn't work. ffmpeg -i test.m4b -f segment -segment_times test.cue -c copy output_%02d.m4a I get errors. Invalid time duration specification 'test.cue' in times list test.cue Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument The thing is I can load the cue (...)
09:22
How to encode from image to mp4 file use GPU? - user24185484 Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to convert images folder to mp4 via FFmpeg AutoGen https://github.com/Ruslan-B/FFmpeg.AutoGen. I use the demo of FFmpeg.AutoGen.Example It is good for me but this is use CPU to encode.This is FFmpeg.AutoGen demo: private static unsafe void EncodeImagesToH264() var frameFiles = Directory.GetFiles("./frames", "frame.*.jpg").OrderBy(x => x).ToArray(); using var fistFrameImage = ReadFrame(frameFiles.First()); var outputFileName = "frames/out.h264"; var fps = 25; var sourceSize = new Size(fistFrameImage.Width, (...) -- https://github.com/Ruslan-B/FFmpeg.AutoGen
08:25
FFmpeg - Streaming from a rtsp server to a rtmp server - loosing packages - Ovidiu I. Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to stream a video from a rtsp server to a rtmp one using FFmpeg. Tried multiple arguments for my command : ffmpeg.exe -re -i "rtsp://10.65.28.251:11442/video/live" -pix_fmt yuv420p -codec:v libx264 -tune animation -preset fast -crf 23 -maxrate 4M -bufsize 8M -f flv "rtmp://10.65.58.21:1935/rec/XB" ffmpeg.exe -re -i "rtsp://10.65.28.251:11442/video/live" -preset ultrafast -vcodec libx264 -tune zerolatency -b 900k -f flv "rtmp://10.65.52.131:1935/rec/XB I'm loosing a lot of packages as seen in the picture. I'm pretty new to FFmpeg so (...) --
03:56
Java Process start a subprocess and the main process cannot be terminated [closed] - Dodge_X Newest 'ffmpeg' Questions - Stack Overflow

I use java Process to run a script, the main process of the script start a subprocess, and the subprocess hanging, so I could not monitor if the script is closed. Process process = processBuilder.command(commands).start(); try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()))) String line; while ((line = reader.readLine()) != null) log.info("win exec get msg:", line); // cannot be finished here int exitCode = process.waitFor(); log.info("script exited with code: " + (...) --
00:56
ffprobe vs C api ffmpeg gives different results on mp3 without id3 tag - Spider Newest 'ffmpeg' Questions - Stack Overflow

I have an issue with an application I'm writing with ffmpeg api. I have an mp3 file that is missing id3 tags (it starts with frame data 0xFFFB). Now if I'm running ffprobe on this file, the av_format_dump from ffprobe gives this info: [AVFormatContext ⓐ 0000015509158a00] Opening 'OhYeah.mp3' for reading [file ⓐ 0000015509158fc0] Setting default whitelist 'file,crypto,data' Probing mp3 score:1 size:2048 Probing mp3 score:25 size:4096 Probing mp3 score:51 size:8192 [mp3 ⓐ 0000015509158a00] Format mp3 probed with size=8192 and (...)

9 April

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

17:57
How the ffmpeg fix is leading to clearing of teletext subtitles? [closed] - adarsh Newest 'ffmpeg' Questions - Stack Overflow

Im working on the teletext subtitle feature and faced with subs not clearing issue. https://sourceforge.net/p/zapping/bugs/203/ The player is using ffmpeg and libzvbi library. Luckily, this issue was fixed in ffmpeg- https://github.com/FFmpeg/FFmpeg/commit/b1e0e216462a989a39e7b413aef6d32f8cedc154 and also in zvbi: https://github.com/zapping-vbi/zvbi/commit/40a6ab0200c46b67b059b5b1fb15793ce780892a I know the root cause and fix in zvbi library, and how it is ignoring c4 flag in case the same page no. But i want to understand how the ffmpeg fix is (...) -- https://sourceforge.net/p/zapping/bugs/203/, https://github.com/FFmpeg/FFmpeg/commit/b1e0e216462a989a39e7b413aef6d32f8cedc154, https://github.com/zapping-vbi/zvbi/commit/40a6ab0200c46b67b059b5b1fb15793ce780892a
17:22
How to process and upload large video files directly to cloud with ffmpeg but without fragmented MP4? - volume one Newest 'ffmpeg' Questions - Stack Overflow

I am using ffmpeg via fluent-ffpmeg for Node.js to process videos uploaded by users. The problem I have is if a user uploades a huge movie file, say 8GB in size, then I don't want to store the file on the server as it will soon reach full capacity of space. I thought a way to tackle this was to stream the output from ffmpeg straight to cloud storage like AWS S3. The only way to do this (I believe) is using a PassThrough() stream: import PassThrough from 'node:stream'; import FFMpeg from 'fluent-ffmpeg'; let PassThroughStream = new (...) --
09:21
Is there a video processing test set to cover most scenarios? [closed] - 砸石头的西西弗 Newest 'ffmpeg' Questions - Stack Overflow

My application integrates ffmpeg, and there are often some special videos or parameters that I cannot handle correctly, but they cannot be discovered in advance, so I need a test set to help find bugs.I nedd a video processing test set to cover most scenarios. A test set which has some different kinds type of sample videos.
07:42
How to create animated gif from images files? [closed] - Daniel Lip Newest 'ffmpeg' Questions - Stack Overflow

i tried this command line D:\\Captured>ffmpeg -framerate 1/2 -start_number 1 -i "D:/New folder (76)/Image%d.png" -loop -1 D:/test.gif but getting error [image2 ⓐ 00000000026324a0] Could find no file with path 'D:/New folder (76)/Image%d.png' and index in the range 1-5 D:/New folder (76)/Image%d.png: No such file or directory here is a screenshot image of my folder with the images and i want to get only the images type png that start with the name Image (...) --

8 April

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

23:10
How to pack the pyav.packet and distribute to another computer - lambertk Newest 'ffmpeg' Questions - Stack Overflow

I'm currently working on projects which needs to read frames from RTSP server on single entry of computer, do some preprocessing and distribute these frames with preprocessed metadata to different backend for different purpose. And after googling, I found that PyAV could be the solution which can retrieve the video from RTSP source and make it packets, which could possibly be sent to another computer. Considering the network bandwidth, transmit the packets instead of the decoded frames could be better choice. But now comes the problem, socket/MQ, usually only allows to (...) -- was rejected by the official team
22:53
Flutter ffmpeg_kit_flutter not able to DrawText over video - Sayed Idrees Newest 'ffmpeg' Questions - Stack Overflow

I am Trying to overlay text over the Video using ffmpeg dependency. i have tried many options, but my most recent commands are as follows, await FFmpegKit.execute( '-i $path -vf "drawtext="fontfile=TiktokFont.ttf:text=\\'Stack Overflow\\':fontcolor=white:fontsize=24:box=1:boxcolor=blackⓐ0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2"" -codec:a copy "$outputPath"') My pubspec Dependency: ffmpeg_kit_flutter: ^4.5.1 But the result is always like this. Error : No such filter: 'drawtext' Solutions (...) --
22:04
What are the licence free codecs for FFMPEG? - FunkyPizza Newest 'ffmpeg' Questions - Stack Overflow

So I've recently started implementing ffmpeg in an application that I do intend to distribute commercially. And I've had an hard time getting my head around the whole licensing process. The most commonly answered question I've seen seems to be about x264 which requires a paid licence from x264.org in order to use it commercially (right?). I started to look into mpeg4 instead but that too seemed to be locked behind some patent licensing fee (https://www.mpegla.com/programs/mpeg-4-visual/license-agreement/). I guess my question is the following, what (...) -- https://www.mpegla.com/programs/mpeg-4-visual/license-agreement/
18:15
Can't convert video with cuda after updating ffmpeg - Peppe Newest 'ffmpeg' Questions - Stack Overflow

i've used this command sometimes to convert 4k video into 1080p without problem with tool "ffmpeg batch" and ffmpeg 5.1? "2022-08-10-git-8fc7f0fdec-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers built with gcc 12.1.0 (Rev2, Built by MSYS2 project)" : -map 0 -map -0:t -filter_complex "scale_cuda=1920:1080:format=yuv420p:interp_algo=lanczos,hwdownload" -fps_mode:v passthrough -c:v h264_nvenc -preset 18 -profile:v high -level 4.1 -b:v 13000K -rc cbr -c:a copy -c:s copy this with pre-input "-hwaccell cuvid" Now if i try to to the same with (...)
19:05
How to set the length metadata property with fluent-ffmpeg? - volume one Newest 'ffmpeg' Questions - Stack Overflow

I have transcoded a sample video using fluent-ffpmeg and want to set the length metadata property so that the player knows how long the video is going to be. To get the duration of the video I did this: import ffmpeg from 'fluent-ffmpeg'; function ffprobePromise() return new Promise((resolve, reject) => ffmpeg.ffprobe('/path/to/file'), function (err, metadata) FileDuration = metadata.format.duration; resolve() ); ) await ffprobePromise(); ffmpeg('path/to/output') (...) -- https://devxxx001.s3.amazonaws.com/sample_960x400_47sec.mp4, ffmpeg documentation
18:49
ffmpeg stops recording screen when I change system date - TestMechanic Newest 'ffmpeg' Questions - Stack Overflow

I am using following command to record screen to a video.avi file on Windows ffmpeg.exe -f gdigrab -framerate 5 -i desktop video.avi However when I change system date let say with +1 day the ffmpeg console start dumping errors like this st:0 invalid dropping or Too large number of skipped frames 259190 > 60000 av_interleaved_write_frame(): Invalid argument and as result video will be limited to the moment I switched the date Is there any way for ffmpeg to ignore those errors and resynch in some way even loosing few seconds of the (...)
14:57
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 = (...)
12:33
How can limit video duration before uploading and implement content detection in an ASP.NET Core 6 backend - ashok patel Newest 'ffmpeg' Questions - Stack Overflow

We are working on a project, essentially a social media app. In this project, I'm handling the backend development. Users can upload videos of up to one minute duration. Before saving the videos to the server, I need to convert all uploaded videos to MP4 format. Additionally, I also need to check if the videos contain any adult content. I am unsure how to start this task. I have downloaded an MP4 video from a website https://www.quickpickdeal.com/coding/download-sample-mp4-video-mp4-test-videos, and installed ffmpeg for converting video Mp4 for before saving it to the (...) -- https://www.quickpickdeal.com/coding/download-sample-mp4-video-mp4-test-videos
11:30
ffmpeg Node Screen recording does not have audio - user2500558 Newest 'ffmpeg' Questions - Stack Overflow

I am building a screen recording application using fluent-ffmpeg. let command = ffmpeg( source: '1:0' ) command.inputFormat('avfoundation') command.fps(60) command.videoCodec('libx264') command.audioBitrate('320k') command.audioCodec('libmp3lame') command.addOption('-pix_fmt', 'yuv420p') command.save('output.mp4') I am able to record the screen, but the audio of the screen is not being recorded. For example: When I play a YouTube clip and record my screen, the video (...)
10:59
timeshift Jumps in Live Streaming HLS Playback - matin Newest 'ffmpeg' Questions - Stack Overflow

some times in live streaming with hls (h264) client show a jump back in time shift but index.m3u8 and playlist.m3u8 is ok and segments are correctly generated I see this problem in our player and hls demo too is there any thing related too transcoding and ffmpeg cause or prevent this problem
09:46
FFmpeg - Channel relabelling of multi audio tracked video file [closed] - Mahi s Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to relabel the audio channels of the multitrack audio, video files. For some reason I could not relabel the audio channels or audio streams using FFmpeg command. Can someone please help me with a ffmpeg command that can retain all the audio properties like audio count and retain the tracks unaltered(some ffmpeg commands that I have tried just picks one out of multiple streams and provides the output). Example scenario: I have a video file which has multi stream audio's (6 audio streams, 6 channel) file with audio format pcm, which was wrongly labelled as C C C C (...)
08:05
ffmpeg process hanging while using java Process to call the script - Dodge_X Newest 'ffmpeg' Questions - Stack Overflow

I want to merge some snapshot images to a video file, so I write a python script using ffmpeg-python to achieve it and it works fine when I run the script directly. ffmpeg.input( os.path.join(output, "screenshot_%04d.png"), framerate=frame_rate ).output(output_file, vcodec="libx264", pix_fmt="yuv420p").overwrite_output().run() # the log cannot be written while using java Process to call logging.info("ffmpeg process finished") but when I call the script by java process it cannot be finished even the output video has already been created. I need (...)
07:15
How to add a new filter to FFMPEG in c with third-party dependences - ucag Newest 'ffmpeg' Questions - Stack Overflow

I'm a newbie to FFMPEG development and want to add a customized filter to FFMPEG. I've followed the filter tutorial in the docs. However, it's just a very simplified example and not mentioned how to add other dependences to Makefile. Especially in libavfilter/Makefile, there is only a OBJS-(CONFIG_NAME_FILTER) += name.o for me to add my filter. I want to add a new video filter with third party dependencies, like third-party c code with some other dependences, third-party compiled .so on Linux, .dylib on Mac, .dll and .lib on Windows, etc. How can I add (...)
07:11
How to convert to flac with a specific bitrate? - Viktor Kushnir Newest 'ffmpeg' Questions - Stack Overflow

I want to convert aiff files to flac. On the output file I want to have: Sample Rate - 44.1 kHz Bits per sample - 16 Bitrate - 1411 kbps I use this command: ffmpeg -i A.aif -c:a flac -compression_level 0 -sample_fmt s16 -ar 44100 -b:a 1411 A.flac Output: Input #0, aiff, from 'A.aif': Duration: 00:03:18.80, start: 0.000000, bitrate: 1411 kb/s Stream #0:0: Audio: pcm_s16be, 44100 Hz, 2 channels, s16, 1411 kb/s Stream mapping: Stream #0:0 -> #0:0 (pcm_s16be (native) -> flac (native)) Press [q] to stop, [?] for (...)
07:08
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/
07:27
avio_open() function returns -138 - checkright Newest 'ffmpeg' Questions - Stack Overflow

When I use ffmpeg4.4.1 to push rtmp to the desktop, the program returns -138 when running avio_open().I use dshow's screen-capture-recorder on the input side. My purpose is to capture the desktop in real time and use rtmp to push the stream. avdevice_register_all(); avformat_network_init(); AVFormatContext* pFmtCtx_In = nullptr; AVFormatContext* pFmtCtx_Out = nullptr; AVInputFormat* pInFmt = nullptr; AVDictionary* options = nullptr; int nVideoIndex = -1; int ret = 0; AVCodecParameters* pCodecParam = nullptr; AVCodecContext * (...)
01:23
Ffmpeg to add watermark and username to videos like tiktok - hazem khairy Newest 'ffmpeg' Questions - Stack Overflow

I am trying to use ffmpeg to add watermark and username (dynamic input) to videos same as tiktok. Currently I have the following command which adds an image to video but the transition is moving from left to right, my goal to make it appear in random positions as tiktok, and also to add username under the logo but not sure how to make it happen. ffmpeg -i testvideo.mp4 -i logo.png -filter_complex "[1][0]scale2ref=w=iw/10:h=ow/mdar[logo][main];[main][logo]overlay=x='mod(t\\,10)/10*W':y='if(lt(mod(t+2\\,8)\\,4)\\,H-h-H*20/100\\,H*20/100)'" -vcodec libx264 -crf (...)
01:03
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 (...)

7 April

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

13:34
Ffmpeg: Compile argument for 'delogo' [closed] - Sulli Newest 'ffmpeg' Questions - Stack Overflow

I use a custom version of ffmpeg I compiled myself (for cuda support), but when I try to use the delogo filter I get: [AVFilterGraph ⓐ 0x586ea2283880] No such filter: 'delogo' [vost#0:0/mpeg4 ⓐ 0x586ea2281cc0] Error initializing a simple filtergraph What argument should I use when compiling in order to be able to use this filter? And can you tell me at the same time where I can find this information online? It’s not the first time I can’t use a filter because of a missing library and if I’m not mistaken, the ffmpeg documentation does not mention it. (...) -- https://ffmpeg.org/ffmpeg-filters.html#delogo
22:45
AWS Lambda - FFmpeg to extract frames doesn't write anything - Stormsson Newest 'ffmpeg' Questions - Stack Overflow

I have a lambda with a ffmpeg layer on it. The command i want to use is basically ffmpeg -i video.mp4 -qscale:v 2 -vf fps=8 '%04d.jpg' so it has an input file, and creates 8 frames per second in the same folder This code seems to do everything except writing the files, what am I missing ? import ... SIGNED_URL_TIMEOUT = 60 FPS_SAMPLES = 8 def lambda_handler(event, context): # Set up logging. logger = logging.getLogger(__name__) s3_client = boto3.client('s3') s3_source_bucket = (...)
20:32
How to list device options in ffmpeg with its avdevice C++ API? - Pavel Saenko Newest 'ffmpeg' Questions - Stack Overflow

How to list all available device("dshow and v422 source for example") options(formats/resolutions/fps) and chose the preferred one from the C++ API? I know that it is possible using CLI ffmpeg -f dshow -list_options true -i video="Integrated Camera" But how to use it into my C++ application? I tried to find some useful fields inside the AVDeviceInfoList struct, but it doesn`t contains any options list. AVDeviceInfoList* deviceList; int deviceCount = avdevice_list_input_sources(inFormat, nullptr, nullptr, &deviceList); for (...)
17:56
Transcode WEBM to RTMP - Justin White Newest 'ffmpeg' Questions - Stack Overflow

Summary My goal is to take a webcam stream from the browser and feed it into a program called Restreamer that takes in an RTMP stream. I've deduced that the browser Recording API produces Blobs that can be saved as WEBM. In order to stream the WEBM content to Restreamer I am attempting to use FFmpeg. I've read that forcing FLV format is required but otherwise all of the arguments are Greek to me. I've been unable to find a comparable topic where someone has tried to go from WEBM to RTMP. I have found examples of going the other direction, but reversing the (...) -- Restreamer, Recording API, warning than an error, here, no longer an option
18:20
FFmpeg Streaming Video SpringBoot endpoint not show video duration in video players - lxluxo23 Newest 'ffmpeg' Questions - Stack Overflow

it turns out that I've been working on a personal project just out of curiosity. the main function is to stream video by first encoding it through ffmpeg then playback said video from any other device call it "plex" very very primitive although I achieve my goal which is to encode and send the video to the devices that make the request this video is sent so to speak as a live broadcast. I can only pause it, no forward or rewind, anyone have any idea what I am doing wrong or if I should take some other approach either in my service or controller? I leave (...) -- screenshot, repo
17:30
ffmpeg concat command Cannot find a matching stream for unlabeled input pad 3 on filter Parsed_concat_0 - janosdupai Newest 'ffmpeg' Questions - Stack Overflow

The command "flutter ffmpeg" has been working perfectly fine so far, but now I'm receiving the following error message. Do you see any errors in the command? "matching stream for unlabeled input pad 3 on filter Parsed_concat_0" -y -i /var/mobile/Containers/Data/Application/26327694-3478-4DC9-B50A-E8D3B35F1918/Documents/camera/videos/REC_5FC1769A-5373-438B-A497-F10259C9F312.mp4 -i /var/mobile/Containers/Data/Application/26327694-3478-4DC9-B50A-E8D3B35F1918/Documents/camera/videos/REC_1690082E-558D-44D2-9103-5EFB3541F600.mp4 -filter_complex "concat=n=2:v=1:a=1 [v] [a]" -map (...)
15:12
mp4 And Rotation - Remove Flags But Set Rotation - Bud Newest 'ffmpeg' Questions - Stack Overflow

I'm having a hard time with the rotation on some mp4 files I have. It may well be my poor understanding, so forgive me if I set out what I know (or think I know) and then what I want to happen. An mp4 has, obviously, a right way up - that is, the way you want it to show when you watch it. Call this the orientation. This isn't metadata - it's just the way you, as a person, want to see the image, with people's heads at the top of the screen and their feet at the bottom. As part of the metadata, mp4 files have a value/parameter (I believe called (...)
14:18
Ffmpeg : Improve results with h264_nvenc video codec - Sulli Newest 'ffmpeg' Questions - Stack Overflow

I was very happy to discover ffmpeg is compatible with Cuda as using a GPU speeds up my processing time by 10 at least. But I was very sad to discover codec libx264 can’t be used and h264_nvenc is of much poorer quality (my videos are visibly pixelated, to the point I actually don’t see why ffmpeg was made compatible with Cuda in the first place :) ). I did not tweak my ffmpeg commands at all when I switched from libx264 to h264_nvenc, but maybe there are some parameters I could add to get a better quality? Even if it leads to longer processing time, I don’t mind trading a bit of that (...)
07:46
MP4 to MP3 directly from URL C# [closed] - k-s Newest 'ffmpeg' Questions - Stack Overflow

We have MP4 URLs and we need to convert them into MP3 files and store MP3s on CDN. The current solution we have is downloading MP4 on a local drive and then creating MP3 and putting it on CDN. I am currently using FFMPEG for the same. Convert video MP4 audio to MP3 using C# To be more specific - we have Vimeo video file URLs as well as direct MP4 files that we can show on our portal. We have one tool that shows MP3 audio and also displays transcription of it. My current code is as per the above URL where we are using FFMPEG for conversion. There is one library called NReco (...)
00:48
ffmpeg: Remove invalid APP fields when streaming webcam to file - Richie Bendall Newest 'ffmpeg' Questions - Stack Overflow

Logitech's proprietary MJPEG format embeds an inner H264 stream within the JPEG frames as APP attachments. Presently, I'm solely piping the video stream straight into the output file. ffmpeg -f dshow -i video="HD User Facing" -c:v copy -rtbufsize 2000M output.mkv How do I configure ffmpeg to remove that additional H264 stream while retaining the original MJPEG data, so that I may save storage? I could not find any useful option in the (...)

6 April

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

14:01
Overlay a 16/9 video to a 9/16 ratio and shrink the original video [closed] - thanhbo Newest 'ffmpeg' Questions - Stack Overflow

I assume the video has an aspect ratio of 16/9 (size 1920:1080). I want to convert it to 9/16 ratio and shrink the original video. The formula I wrote is as follows but there is an error. I hope someone can help, thank you. ffmpeg -y -i A1.mp4 -filter_complex "split[crp0][crp1];[crp0]scale=iw:2*trunc(iw*16/18),boxblur=luma_radius=min(h\\,w)/20:luma_power=1:chroma_radius=min(cw\\,ch)/20:chroma_power=11,setsar=1[bg],[1:v]scale=(iw-100):-1[bg2];[bg][bg2]overlay=(W-w)/2:(H-h)/2[bg3]" -map "[bg3]" bg3.mp4 ffmpeg -y -i A1.mp4 -filter_complex (...)
20:42
Streams stop when creating a quad split Multi-viewer using FFMPEG [closed] - Chris Parker Newest 'ffmpeg' Questions - Stack Overflow

Created a FFMPEG script that takes in 4 SRT Live Streams and displays them in a quad split MV. However when I launch this script all 4 SRT streams will play but 3 will pause and 1 will play. ffmpeg \\ -re -hwaccel auto -hwaccel_output_csp videocore \\ -stream_loop -1 \\ -i "srt://address:5000?streamid=stream-id" \\ -stream_loop -1 \\ -i "srt://address:5000?streamid=stream-id" \\ -stream_loop -1 \\ -i "srt://address:5000?streamid=stream-id" \\ -stream_loop -1 \\ -i "srt://address:5000?streamid=stream-id" \\ -filter_complex (...)
17:12
Apache Tika 2.0.9 programm ffmpeg and exiftool not found? - mj44 Newest 'ffmpeg' Questions - Stack Overflow

I use an JavaFX Maven Project to use Apache Tika Version 2.9.0. The Java Test program will be finished and all methods that I create will done right. I have in the log file a lot of DEBUG errors and Idon't know why? I habe spent many hours to clear the problem. Here's an excerpt of the logfile 2024-04-03 14:56:12 [main] DEBUG org.apache.tika.parser.external.ExternalParser - exception trying to run ffmpeg java.io.IOException: Cannot run program "ffmpeg": CreateProcess error=2, Das System kann die angegebene Datei nicht finden at (...)
16:38
How can i make fluent-ffmpeg to work in angular 8 - Js doee Newest 'ffmpeg' Questions - Stack Overflow

I'have installed 'fluent-ffmpeg' plugin in my project and I added it to my angular project this way var ffmpeg = require('fluent-ffmpeg') and i also used this method import * as ffmpeg from 'fluent-ffmpeg' I'm getting the following issues while building using ng serve ERROR in ./node_modules/fluent-ffmpeg/index.js Module not found: Error: Can't resolve './lib-cov/fluent-ffmpeg' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg' ERROR in ./node_modules/fluent-ffmpeg/lib/ffprobe.js Module not (...)
10:15
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 (...)
11:16
FFmpeg fails to draw text - Edoardo Balducci Newest 'ffmpeg' Questions - Stack Overflow

I've rarely used ffmpeg before, so, sorry If the question is too dumb. I have a problem adding a text layer to a video frame using ffmpeg. This is my current code: import subprocess from PyQt5.QtGui import QPixmap, QImage from PyQt5.QtWidgets import QLabel class VideoThumbnailLabel(QLabel): def __init__(self, file_path, *args, **kwargs): super().__init__(*args, **kwargs) self.video = video video_duration = self.get_video_duration(file_path) thumbnail_path = self.get_thumbnail(file_path, video_duration) if (...)
06:04
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 (...)
04:27
Babel Loader error when using ffmpeg.wasm in CRA react app - Sooraj Chandu Newest 'ffmpeg' Questions - Stack Overflow

I am trying to implement a video editor using ffmpeg-wasm in CRA react app. Package dependencies : "ⓐffmpeg/ffmpeg": "^0.12.10", "ⓐffmpeg/util": "^0.12.1", Below is a sample class that I am trying to implement: import React, useRef, useState from 'react'; import FFmpeg from "ⓐffmpeg/ffmpeg"; import toBlobURL, fetchFile from "ⓐffmpeg/util"; function Trimmer() const [loaded, setLoaded] = useState(false); const ffmpegRef = useRef(new FFmpeg()); const videoRef = useRef(null) const messageRef = (...)
00:25
No such file or directory: 'ffmpeg' in Django/Docker - tthheemmaannii Newest 'ffmpeg' Questions - Stack Overflow

I run my Django code in Docker. I run transcription software that requires ffmpeg to function. However I've been getting the error [Errno 2] No such file or directory: 'ffmpeg' whenever I try to run my code. Here's my views.py: def initiate_transcription(request, session_id): ... with open(file_path, 'rb') as f: path_string = f.name transcript = transcribe_file(path_string,audio_language, output_file_type) ... Here's my Dockerfile: # Pull base image FROM python:3.11.4-slim-bullseye # Set (...)

5 April

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

18:30
VScode ffmpeg.dll missing - YMRTZ Newest 'ffmpeg' Questions - Stack Overflow

When I tried to open VScode, I got an error popup saying "The code execution cannot proceed because ffmpeg.dll was not found. Reinstalling the program may fix this problem". Reinstalling VScode solved the issue, but I'm wondering what caused it in the first place, as apparently it's a video/audio file .dll, and I don't know what VScode has to do with it. The error -- The error
09:24
NodeJS/Dokku/Docker: ffmpeg exited with code 127 - Matt Molnar Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to run ffmpeg inside of a Docker container via Dokku. I've heavily modified a Dokku plugin to accomplish this as I need h264 support. I currently get an error from fluent-ffmpeg which states Error: ffmpeg exited with code 127 I've tried to look up what error code 127 is but haven't found much. Some people seem to suggest that it's some sort of issue with finding ffmpeg. However, I did have a libx264 error from ffmpeg earlier in the process so I'm pretty sure the ffmpeg binary is being found. Unfortunately fluent (...) -- heavily modified
07:41
FileNotFoundError: [WinError 2] The system cannot find the file specified - FFMPEG - shiftyscales Newest 'ffmpeg' Questions - Stack Overflow

I am running a script using conda environment on Windows and getting this error (stack trace below), which is apparently caused by python executable not being able to find the ffmpeg.exe. There are numerous questions about this, but none of the solutions unfortunately worked for me, so I hope someone has fresh ideas. What I tried: conda install -c conda-forge ffmpeg (after this I can run ffmpeg in command line, but still getting the error) pip install ffmpeg-python Added the folder where ffmpeg.exe is located in conda env to the Windows Path as well as to sys.path in (...)
07:40
define the input FPS of a stream using ffmpeg-python - tamirg Newest 'ffmpeg' Questions - Stack Overflow

Im creating an HLS playlist using ffmpeg, reading my input from an RTSP stream. When probing the RTSP stream, i get an FPS which is not the true FPS, and i want to "tell" ffmpeg the actual real FPS. In the command line, im using the -r flag, which works fine: ffmpeg -rtsp_transport tcp -r 18 -i rtsp://localhost:554/test -b:v 100KB -vf format=yuvj420p -c:a copy -hls_time 2 -hls_list_size 10 -hls_flags delete_segments -start_number 1 output.m3u8 I noticed that flag must come before the input param. If i use the -r after, it simply doesnt work. In ffmpeg-python, (...)
05:35
How to preserve colours when colour metadata is "unknown" - Hashim Aziz Newest 'ffmpeg' Questions - Stack Overflow

I often need to scale up many files with unknown color metadata (probably because FFmpeg itself was dropping that metadata until very recently): $ ffprobe -v error -show_streams "input.mp4" | grep color color_range=tv color_space=unknown color_transfer=unknown color_primaries=unknown No matter what I do to try and preserve the colours in these files, nothing works to prevent the colours from shifting, usually coming out darker than the input. I've already tried: Setting all four color metadata options (-colorspace, -color_trc, (...)
06:07
Video to GIF Conversion with Random Frames on AWS Lambda using Nodejs and ffmpeg - rahulfaujdar Newest 'ffmpeg' Questions - Stack Overflow

I'm seeking assistance with automating the conversion of several videos stored in an S3 bucket into GIFs. Specifically, I aim to generate GIFs that are precisely 10 seconds long, each comprising random frames sampled from different sections of the original video. The randomness should encompass frames from the beginning, middle, and end of each video, ensuring a varied and engaging GIF output. Currently, I'm in the process of implementing this functionality using Nodejs and AWS Lambda, utilizing ffmpeg for video processing. However, I'm facing challenges in achieving (...)
03:47
ffmpeg ignoring framerate settings when trancsoding mp4 to mxf - Matt B Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg to transcode an mp4 file to an mxf file for proxies. The main problem: ffmpeg ignores my framerate settings and always encodes the output video at 59.9 fps instead of the requested 58. In this case, the input video has an FPS of 58 (actually an avg framerate of 57442500/996461 as reported by an ffmpeg probe), and I require the output to match, but ffmpeg overrides me and sets it to 59.9. No matter what I try, I cannot get ffmpeg to write the output file at 58 fps. I've tried the -r and -framerate arguments and I've tried the fps=58 option (...) -- pastebin
01:52
Fastest way to extract moving dynamic crop from video using ffmpeg - NateW Newest 'ffmpeg' Questions - Stack Overflow

I'm working on an AI project that involves object detection and action recognition on roughly 30 minute videos. My pipeline is the following: determine crops using object detection model extract crops using Python and write them to disk as individual images for each frame. use action recognition model by inputting a series of the crops. The models are fast but actual writing of the crops to disk is slow. Sure, using an SSD would speed it up but I'm sure ffmpeg would greatly speed it up. Some of the challenges with the crops: the (...) --

4 April

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

23:14
how to us google ML kit Selfie segmentation in flutter to overlay segmented user on top of chosen image or video? [closed] - Amr Newest 'ffmpeg' Questions - Stack Overflow

I'm working on implementing a virtual background feature using the Google ML Kit selfie segmentation Flutter plugin. The goal is to separate the user from the background live from the camera feed, overlay the user on a chosen image or video, and then create a new video combining these elements. Currently, I'm successfully obtaining the mask using the plugin. However, I'm concerned about performance issues if I directly copy pixels to achieve the overlay effect, especially in real-time scenarios. I'm looking for alternative approaches or best practices to (...)
15:38
FFMPEG - How to reduce frame rate without slow motion effect? [closed] - crater33 Newest 'ffmpeg' Questions - Stack Overflow

I have an MP4 video that's 21 minutes long, that was shot on a GoPro Hero 9 Black at 2.7k and 240 frames per second using HEVC. I would like to use FFMPEG to reduce the frame rate, with the output being a video that is also 21 minutes long and 2.7k ... but with a frame rate of 120 frames per second. But when I use the command "ffmpeg -i input.mp4 -filter:v fps=120 output.mp4 I get a video that is 42 minutes long. I would like to tell FFMPEG to simply delete every other frame of the input video, while keeping the total length of the video the same. What command would I use (...)
20:50
Streaming fails when I activate hls - yieniggu Newest 'ffmpeg' Questions - Stack Overflow

I'm currently testing a local server with nginx and the rtmp module in order to receive video streams. It's working just fine, but I want to add hls/dash in order to reproduce the streams on html. However, when I add this functionality to the config file the sources start complaining about the server and stop streaming. For example, if am streaming through OBS I got a message that is attempting to reconnect every 2 seconds with no success. If I use ffmpeg as : ffmpeg -re -i 'pescado.mp4' -c:v libx264 -preset slower -tune zerolatency -c:a aac -f flv (...) -- How To Set Up a Video Streaming Server using Nginx-RTMP on Ubuntu 22.04
15:03
Can anyone tell me ffmpeg.wasm command to converting 24-bit color image to 8-bit color image without affecting transparency part? - Rohit Nayak Newest 'ffmpeg' Questions - Stack Overflow

I am a new developer and currently developing a png compressor to compress png image file using next.js 14 app directory and I found the right command to do so ffmpeg -i input.png -c:v png -pix_fmt pal8 -vf "split[a][b];[a]alphaextract[am];[b]palettegen=stats_mode=diff[pl];[b][pl]alphamerge" output.png but i am unable to do so because I don't know how to convert that to ffmpeg.wash command. I am using node.js v20.11.0, ⓐffmpeg/ffmpeg version 0.12.6 and ⓐffmpeg/util 0.12.1", alone with ⓐffmpeg/coreⓐ version 0.12.2 which seems to work well. My code is as (...)
16:27
Cannot include ffmpeg.exe using auto-py-to-exe - YYY Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to generate an exe for my PyQT application that uses ffmpeg using auto-py-to-exe. Within the application, there are calls to ffmpeg as an os command (like 'ffmpeg -i file ... output) . As I have ffmpeg installed on my machine and accessible from the Windows Path, when I run the app exe on my machine, I don't have any issue. However, when it's someone that doesn't have ffmpeg installed, he/she encounters an error like "'ffmpeg' is not recognized as an internal or external command, operal program or batch file" I don't (...) -- ,
12:40
How to create a box shadow effect when overlaying an image on a video using FFmpeg? [closed] - Kataklycm Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a video project where I need to overlay an image on a background video. I've managed to achieve the basic overlay using the following FFmpeg command: ffmpeg -i background.mp4 -i image_video.mp4 -filter_complex "[0][1]overlay=(W-w)/2:(H-h)/2" -c:v libx264 -crf 23 -preset veryfast output.mp4 This command overlays the image on the background video, centered. However, I would like to add an effect similar to a CSS box shadow, where the overlaid image has a shadow that gradually fades out, giving it a sense of depth. I've tried various combinations (...) -- https://i.imgur.com/3uK79jP.png, https://i.imgur.com/KaIq7VI.png
09:05
HTTP Live video streaming using ffmpeg using NODEJS via Socket.IO - dintel Newest 'ffmpeg' Questions - Stack Overflow

I can't transmit the webcam to the server and to the website. Before, I was able to transmit the webcam (I don't remember how), but I only see frames continuously sent in cmd and don't see anything at localhost:3000 or 127.0.0.1:3000. I installed socket.io, ffmpeg and nodejs path And when i try this one, everything fine on udp, but to server and website is impossible. ffplay udp://127.0.0.1:23000 ffmpeg -f dshow -framerate 30 -video_size 640x480 -i video="Integrated Camera" -vcodec mpeg4 -f mpegts udp://127.0.0.1:23000 My server.js code: const (...)
04:40
Problem with xampp, some other program you use? [closed] - user13449797 Newest 'ffmpeg' Questions - Stack Overflow

I have been using xampp for several years, but recently I have become more and more bothered by using this program. sometimes there is a problem with starting MYSQL services. Sometimes solution with helps text I don't understand why this problem hasn't been solved yet and what exactly is the problem that sometimes it stops working on its own. Maybe you have any better alternatives to Windows 11?

3 April

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

12:50
ProRes 4444 with alpha output file is HUGE, how to compress it with FFMPEG? [closed] - NoKey Newest 'ffmpeg' Questions - Stack Overflow

I am using FFMPEG to output a .mov file. It needs to be a .mov file with an alpha channel. ProRes 4444 supports this, this is the command I use (this is simplified but does show the high increase of file size): ffmpeg -y -i vid.mov -c:v prores_ks -profile:v 4444 -c:a pcm_s16le -pix_fmt yuva444p10le vid2.mov The output file shows what I want, but it is HUGE. I mean from a 10.8 MB .mov file, it creates a 340 MB output file. I tried reducing the file size with using the -crf command, but then I get this warning and the file size is unchanged: Codec AVOption crf (Select the (...)
18:28
Having issues with exporting video in FFMPEG [closed] - Jake Newest 'ffmpeg' Questions - Stack Overflow

I am developing an application that uses FFMPEG to take numerous videos and concatenate them into one file. The user has the ability to flip an individual video if they would like. From Landscape to portrait. The application works as planned and it produces one single file, with the orientation however the user set them. The problem is, when I take that file that FFMPEG generated and tray to convert or copy it using FFMPEG. It will create a video file of all of the video prior to the segment where the orientation has been flipped. The flipped video as well as all of the other videos (...)
08:51
ffmpeg command not working with VANC data [closed] - Parmesh Kumawat Newest 'ffmpeg' Questions - Stack Overflow

when i am running below ffmpeg command ffmpeg -i "udp://ip:port?localaddr=ip&sources=ip&overrun_nonfatal=1&buffer_size=4000000&fifo_size=1000000" -c copy -map 0 -vsync passthrough -copyts vanc_stream1.ts the bin_data for VANC is changing/not recognized saving as below output Input #0, mpegts, from 'vanc_stream_ffmpeg.ts': Duration: N/A, bitrate: N/A Program 1 Metadata: service_name : Service01 service_provider: FFmpeg Stream #0:0[0x100]: Data: bin_data ([6][0][0][0] / 0x0006) Stream #0:1[0x101]: Data: (...)
22:13
FFMPEG FDKAAC and Python - Eric Barker Newest 'ffmpeg' Questions - Stack Overflow

Been banging my head against the wall for days on this. I'm writing a python program to take a 48kHz WAV file, convert it to 44.1kHz and encode it to HE-AAC via FDKAAC. FDK cannot convert to sample rates, so I'm using FFMPEG as the wrapper and piping it through FDKAAC. In a perfect world, I'd make a custom build of FFMPEG with FKD, but I've run into loads of issues on our Windows Server 2019 machine trying to build out FFMPEG, so I'm using vanilla FFMPEG with FDK piped in. I can get the command to work perfectly from a command prompt: ffmpeg -progress (...)
18:59
FFMPEG Force Concat to skip corrupt files - Oli Shingfield Newest 'ffmpeg' Questions - Stack Overflow

I am currently using: ffmpeg -safe 0 -f concat -i clipstomerge.txt -vcodec copy -acodec copy mergedclips.mp4 This concats videos from a given directory listed in clipstomerge.txt. What I have noticed is that if there is a corrupted file the concat will fail. How can I force concat to to skip the corrupted files? Thanks in advance. EDIT: I have tried following this link: http://www.ffmpeg-archive.org/Force-concat-to-ignore-corrupt-files-td4664775.html But I couldn't understand how to fit it into my bat file. Any help (...) -- http://www.ffmpeg-archive.org/Force-concat-to-ignore-corrupt-files-td4664775.html
18:25
How to Convert u-law 8000 Hz Audio Files to OPUS in Python - user60108 Newest 'ffmpeg' Questions - Stack Overflow

I'm working on a Python project where I need to convert audio files from μ-law format with an 8000 Hz sampling rate to OPUS format. The challenge is to keep the original channels separated in the conversion process. Despite several attempts with different methods and libraries, I haven't succeeded yet. I'm looking for advice or a Python library that can efficiently handle this conversion. What I've Tried: 1- Using pydub to Load and Export Files: Attempted to load .au files with pydub and export them as OPUS. This approach resulted in ffmpeg related errors, (...)
12:52
FFmpeg saves an mp4 file every 10 seconds for the rtsp stream, and the progress bar for the video is incorrect [closed] - 谢康林 Newest 'ffmpeg' Questions - Stack Overflow

I had some problems when I was programming with the FFmpeg API I implemented this by changing the example remux.c. After writing the file header, read the packet. AVPacket wrote the trailer to the file for 10s, and then wrote the trailer to the av_write_trailer(ofmt_ctx). Then write the new file header again... The program can successfully save the mp4 file, but the progress bar of the first MP4 file is 10s, the second is 20s, the third is 30s.... But only the first 10 seconds of the video can be (...)
16:12
make ffmpeg chose Nvidia CUDA over Intel QSV (Windows 10 with two video adapters) - Bart Lederman Newest 'ffmpeg' Questions - Stack Overflow

I just set up a 'new' PC with built-in Intel video and an Nvida card: mostly to speed up video processing with ffmpeg and other programs. At first the built-in Intel was disabled, running only the Nvidia card. ffmpeg worked as expected, the CPU could be used for decoding and encoding. However: VirtualDub, a program I use frequently, has a problem with Nvidia cards (at least on Windows 10). The display gets screwed up, previews don't work, and all sorts of other problems occur. I tried all of the various discussion boards, and nobody has a good solution. (The problem is (...) -- https://github.com/FFmpeg/FFmpeg/commit/527a1e213167123d24d014bc0b956ef43d9d6542, https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/
08:19
Continuous RTMP Streaming with FFmpeg Without Restarting the Process for New Videos - 刘小佳 Newest 'ffmpeg' Questions - Stack Overflow

I'm facing a challenge with my workflow and would appreciate any guidance or solutions you might have. My business scenario involves a service that periodically generates new video files locally (e.g., 1.mp4, 2.mp4, ...). These files are then streamed to an RTMP server using FFmpeg, and clients pull the stream via HTTP-FLV for playback. My goal is to ensure continuous streaming between video files without restarting the FFmpeg process each time a new video is ready to be streamed. Restarting FFmpeg for each new file introduces a disconnect in the client playback, which I'm (...) -- https://trac.ffmpeg.org/wiki/Concatenate
03:01
Trying to choose first audio stream of specific language in ffmpeg using python - R41D Newest 'ffmpeg' Questions - Stack Overflow

I have .mkv files that some of them have more than 1 audio stream in the same language so i need to first map the audio streams with specific language and then use only first of them to output .mp4 file. So it would need two -map audio arguments which doesn't work in ffmpeg. I found out that i could execute ffmpeg mapping audio with that specific language and then pipe the output to another ffmpeg command that would take the first audio stream from the first ffmpeg command and do the rest of things (scaling, burning-in subtitles, encoding it to different format), but i'm (...)
02:16
ffmpeg audio out of sync with video stacking - s0mbre Newest 'ffmpeg' Questions - Stack Overflow

The problem When trying to do horizontal stacking of two videos in ffmpeg, the combined audio track loses sync with the video on the second input. As far as I've look it up, this problem is very common, not to say notorious with ffmpeg. I do hstack muxing like this: ffmpeg -i 1.mp4 -i 2.mp4 -filter_complex \\ "[0:v]scale=1280:-2,crop=w=640:h=720:x=0[v1]; \\ [1:v]scale=1280:-2,crop=w=640:h=720:x=0[v2]; \\ [v1][v2]hstack=shortest=1[v]; \\ [0:a][1:a]amix=duration=shortest[a]" \\ -map [v] -map [a] -c:v libx264 -c:a libmp3lame -r 30 -y stuff/out.mp4 (...) -- here, aresample=async=1, apad, adelay=0

2 April

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

19:31
ffmpeg usage to encode a video to H264 codec format - goldenmean Newest 'ffmpeg' Questions - Stack Overflow

I have a *.mp4 video file(MPEG4 video codec) and I am trying to convert this to a H264 video codec format(raw h.264 format) using ffmpeg on Linux(Version - FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard,) using command line as shown below, ffmpeg -i input .mp4 output.h264 but I get an error saying - Unsupported codec for output stream #0.0 Then when i try this option: ffmpeg -i input .mp4 -formats h264 output.h264 it still does not work, and gives - Seems stream 0 (...)
18:33
Manim error: It's a sound problem that I haven't seen anywhere else - Nεo Pλατo Newest 'ffmpeg' Questions - Stack Overflow

I've been using Manim for about a month now, and with already existing impediments to my progress none has been more painful than the lack of sound when I got to this part of Theorem of Beethoven's tutorial. I've been struggling with it for three weeks and opened issues on GitHub and Reddit without any success. So the code looks like this: class AudioTest(Scene): def construct(self): group_dots=VGroup(*[Dot()for _ in range(3)]) group_dots.arrange_submobjects(RIGHT) for dot in group_dots: (...) -- this part of Theorem of Beethoven's tutorial
18:08
How to get the PCR and PTS values of a TS stream using FFMPEG? [closed] - tong berton Newest 'ffmpeg' Questions - Stack Overflow

I use ffmpeg to grab TS streams of PTS and DTS, I did not find a command to grab PCR. Can FFMPEG tools capture the PCR and PTS values in the realtime streaming TS? We need to use a tool to grab the PCR and PTS values of the real-time streaming TS for comparison.
17:47
Create multiple thumbnails using ffmpeg - Andrei Petrov Petrov Newest 'ffmpeg' Questions - Stack Overflow

Have a lot of videos .mp4 format and need to make thumbnails for them but I need make this thumbnails form 3 frames (for example 20% of video 50% and 70%) that will be croped and plased in order like this: https://imgur.com/a/Ypgl5A4 Is it possible to make thumbnails using some code? Maybe somebody can make it (sure not for free) Try ffmpeg exporting frames - but can only export full frames foreach ($file in Get-ChildItem *.mp4) # Get the duration of the video $duration = (ffmpeg -i $file.FullName 2>&1 | Select-String "Duration").ToString() -replace (...) -- https://imgur.com/a/Ypgl5A4
14:38
How to convert raw H264 frames to JPEG using C#? - Алексей Гладков Newest 'ffmpeg' Questions - Stack Overflow

I'm reading frames from RTSP stream, which produces raw h264 frames. I'm using RtspClientSharp library, so the code looks like this var uri = new Uri("rtsp://x.x.x.x/onvif/media?profile=Profile1"); var credentials = new NetworkCredential("xxxxx", "xxxxx"); var rtspClient = new RtspClient(new ConnectionParameters(uri, credentials)); rtspClient.FrameReceived += (sender, frame) => if (frame.Type is FrameType.Audio) return; Console.WriteLine($"Received frame of type frame.GetType().Name at frame.Timestamp"); ; await (...)
11:05
Repeated artifacts when decoding H.264 RTSP stream with FFmpeg - ttng_ Newest 'ffmpeg' Questions - Stack Overflow

I use FFmpeg to pipe a RTSP stream into my program for video processing. Some frames looks great but it glitches, then a good frame comes around, repeatedly as so. Here's my snippet of code used to do so: import ffmpeg import cv2 import numpy as np height = 320 width = 480 args = "rtsp_transport": "tcp", "avoid_negative_ts": "make_zero" out = ( ffmpeg .input('rtsp://localhost:8554/debug-stream', **args) .output('pipe:', format='rawvideo', pix_fmt='yuv420p', s='x'.format(width, (...) -- as so,
09:22
I can't configure OpenCV to use FFMPEG in python docker image - Jrneliodias Newest 'ffmpeg' Questions - Stack Overflow

I am attempting to create a Python Docker image to utilize OpenCV for processing video frame by frame, but I am encountering difficulties with the codec. Gives this erro: [ERROR:0ⓐ38.410] global cap_ffmpeg_impl.hpp:3130 open Could not find encoder for codec_id=27, error: Encoder not found [ERROR:0ⓐ38.410] global cap_ffmpeg_impl.hpp:3208 open VIDEOIO/FFMPEG: Failed to initialize VideoWriter my docker file: # Use a base image with the necessary dependencies FROM python:3.9-slim # Install ffmpeg and other dependencies RUN apt-get update && apt-get (...) -- Cisco
09:43
The While loop present in PowerShell code blocking the PowerShell GUI from being responsive - Baswaraj Newest 'ffmpeg' Questions - Stack Overflow

Add-Type -AssemblyName System.Windows.Forms $ffmpegPath = "C:\\ffmpeg\\bin\\ffmpeg.exe" $outputFilePrefix = "output" $recordDuration = 10 $global:ffmpegProcess = $null $global:recordingInProgress = $false function Start-Recording $global:recordingInProgress = $true $recordIndex = 1 while ($global:recordingInProgress) $outputFile = "$outputFilePrefix$recordIndex.mp4" $processStartInfo = New-Object System.Diagnostics.ProcessStartInfo $processStartInfo.FileName = $ffmpegPath $processStartInfo.Arguments = "-f gdigrab (...)
07:13
ffmpeg command not working with VANC Data - Parmesh Kumawat Newest 'ffmpeg' Questions - Stack Overflow

from the stream i am getting metadata as below output Input #0, mpegts, from 'stream_capture1.ts': Duration: 20:56:00.19, start: 21971.910678, bitrate: 5 kb/s Program 1 Metadata: service_name : CS11G service_provider: ABC Stream #0:1[0x70]: Video: hevc (Rext) ([36][0][0][0] / 0x0024), yuv422p10le(tv, progressive), 1920x540 [SAR 1:2 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 59.94 tbc Stream #0:2[0x71]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, 5.1, fltp, 379 kb/s Stream #0:3[0x72]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, (...)
07:08
Unable to stream video file from MediaMTX media server to browser via WebRTC - thegreatjedi Newest 'ffmpeg' Questions - Stack Overflow

I took over a repository at work. It's a working demo comprising a web server which receives video and camera feeds from a media server (built from the rtsp-simple-server Docker image) via a RTSP relay server and streams the feeds to the client, all deployed via Docker Compose. I'm trying to switch over to use WebRTC instead. rtsp-simple-server has upgraded into MediaMTX since the time the demo was created 2 years ago. This is the relevant section of the updated Docker Compose configuration: media-server: image: bluenviron/mediamtx:latest-ffmpeg expose: (...) -- MediaMTX
03:31
I can't configure FFMPEG in python docker image - Jrneliodias Newest 'ffmpeg' Questions - Stack Overflow

I am attempting to create a Python Docker image to utilize OpenCV for processing video frame by frame, but I am encountering difficulties with the codec. Gives this erro: [ERROR:0ⓐ38.410] global cap_ffmpeg_impl.hpp:3130 open Could not find encoder for codec_id=27, error: Encoder not found [ERROR:0ⓐ38.410] global cap_ffmpeg_impl.hpp:3208 open VIDEOIO/FFMPEG: Failed to initialize VideoWriter my docker file: `# Use a base image with the necessary dependencies FROM python:3.9-slim Install ffmpeg and other dependencies RUN apt-get update && apt-get install (...) -- Cisco
01:27
How to stream mp4 file with fluent-ffmpeg? - user3184735 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to stream a video file with fluent-ffmpeg. But i could't do it. Here is my code var filePath = null; filePath = "video.mp4"; var stat = fs.statSync(filePath); var range = req.headers.range; var parts = range.replace(/bytes=/, "").split("-"); var partialstart = parts[0]; var partialend = parts[1]; var start = parseInt(partialstart, 10); var end = partialend ? parseInt(partialend, 10) : total-1; var chunksize = (end-start)+1; var file = fs.createReadStream(filePath, start: start, end: (...)

1 April

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

18:54
Transcription via OpenAi's whisper: AssertionError: incorrect audio shape - muratowski Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to use OpenAI's open source Whisper library to transcribe audio files. Here is my script's source code: import whisper model = whisper.load_model("large-v2") # load the entire audio file audio = whisper.load_audio("/content/file.mp3") #When i write that code snippet here ==> audio = whisper.pad_or_trim(audio) the first 30 secs are converted and without any problem they are converted. # make log-Mel spectrogram and move to the same device as the model mel = (...)
16:29
ffmpeg объединить MP3 файлы и сделать между ними тишину или паузу [closed] - Макс Васильченко Newest 'ffmpeg' Questions - Stack Overflow

Подскажите пожалуйста как объединить несколько MP3 файлов в один файл. целый вечер ломаю голову не могу понять Как. мне нужно объединить такие файлы с паузой или тишиной и вывести их в один файл через ffmpeg windows bat or cmd file1.mp3|silence 3s|file2.mp3|silence 5s|file2.mp3|silence 5s|file2.mp3|silence 5s file2 несколько раз перепробовал практически всё что смог найти в Интернете и всё что мне подсказывали GPT и gemini
18:20
set ffprobe timeout for streaming protocols (srt,dash,hls,rtmp) - tester11 Newest 'ffmpeg' Questions - Stack Overflow

I am trying to write a test where ffprobe after network stream was disconnected will try to open it only for a specified number of seconds, then return with nothing, which would signal that the stream is no more. I tried to use timeout 5 key but ffprobe did not understand it. I will need such timeout for the 4 protocols as listed in the subject. Example ffprobe -show_format -show_streams rtmp://my_rtmp_link Edit: By trying every single kind of timeout keys listed in ffprobe help I found that this one, one only, accomplishes what I need (in (...)
16:25
libav: listing only audio- or video-capable demuxers - Jean-Michaël Celerier Newest 'ffmpeg' Questions - Stack Overflow

FFMPEG API, libav, provides the following function to iterate over the available demuxers: const AVInputFormat *av_demuxer_iterate(void **opaque); I would like to know which of these demuxers are relevant for audio (ex.: alsa, s16le), which are for animated images (ex.: gif), video (ex.: hevc, mjpeg), and which are combined audio/video/... containers (mov, mp4 etc.). But AVInputFormat (as of FFMPEG 6.1) does not seem to provide this information in any easily accessible way. Is there any way to get this information somewhere from the libav API (...)
14:56
"FFmpeg: Error not transitioning to the next song in Discord Bot's queue." - noober Newest 'ffmpeg' Questions - Stack Overflow

I have 3 modules, but I'm sure the error occurs within this module, and here is the entire code within that module: import asyncio import discord from discord import FFmpegOpusAudio, Embed import os async def handle_help(message): embed = discord.Embed( title="Danh sách lệnh cho Bé Mèo", description="Dưới đây là các lệnh mà chủ nhân có thể bắt Bé Mèo phục vụ:", color=discord.Color.blue() ) embed.add_field(name="!play", value="Phát một bài hát từ YouTube.", (...)
08:57
FFMPEG mixing .wav files volume control [closed] - JoonSeo Yang Newest 'ffmpeg' Questions - Stack Overflow

I am working on Java, using the ffmpeg library with command line processing to mix 2 .wav files into one .wav file, but I would like to know how to control the volume of each original file. My problem: i have 2 audio files (human voice BGM), but BGM is too loud, so i can barely hear human voice, i would like to -> volume down the BGM file, or volume up voice file Here is my partial code String ffmpegCommand = file_exe.getAbsolutePath() + String.format( " -i %s -i %s -filter_complex amix=inputs=2:duration=first:dropout_transition=3 %s", (...)
14:22
How to install ffmpeg on Google App Engine? - london_utku Newest 'ffmpeg' Questions - Stack Overflow

I intend to install ffmpeg and ffprobe to my Google App Engine flex environment, how can I do this with requirements.txt as a package ? I am currently using ffmpeg-python yet, this is only a wrapper. ffmpeg-python==0.2.0 ffprobe-python==1.0.3 Below is the error when I try to use ffmpeg-python wrapper, which is expected as there is no ffmpeg and ffprobe available : 2020-05-03 11:42:36 default[20200503t112932] [03/May/2020 11:42:36] ERROR [log.py:228] Internal Server Error: /capture_thumbnail/ 2020-05-03 11:42:36 default[20200503t112932] (...)
14:15
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"); (...)
12:57
java.io.IOException: Cannot run program "/data/user/0/com.voi.myapplication8/files/ffmpeg": error=13, Permission denied - Harsha Newest 'ffmpeg' Questions - Stack Overflow

java.io.IOException: Cannot run program "/data/user/0/com.voi.myapplication8/files/ffmpeg": error=13, Permission denied I am using this dependencies implementation 'com.writingminds:FFmpegAndroid:0.3.2' 2024-03-31 21:40:31.045 15937-16762 FFmpeg com.voi.myapplication8 E Exception while trying to run: [Ljava.lang.String;ⓐ71d4c0f java.io.IOException: Cannot run program "/data/user/0/com.voi.myapplication8/files/ffmpeg": error=13, Permission denied at java.lang.ProcessBuilder.start(ProcessBuilder.java:1050) at (...)
05:31
Compress and get thumbnails from .mp4 files using .net c# - Magi Newest 'ffmpeg' Questions - Stack Overflow

I was searching how we can compress mp4 file and generate thumbnails from that file, Fortunately, I found one solution "MediaToolKit" that worked perfectly for thumbnail generation but not works for compression. Currently, what I am doing, I have generated .bat file which contains commands of FFmpeg for example ffmpeg -i %1 -an -crf 25 -vf fps=fps=30,scale=640x480 %output.mp4 But it's not good stuff, I want to write a program in C# which will take video and compress it and generate thumbnails Does anyone have an idea about (...)
01:28
Batch script to convert, youtube-dl webm file to mp3 with ffmpeg - SneakyShrike Newest 'ffmpeg' Questions - Stack Overflow

I'm using youtube-dl to extract the best possible audio quality from youtube videos. However the best quality audio usually turns out to be the webm format, which isn't useful. I would like to write a batch script that converts the webm file to an mp3 with ffmpeg. I've already tried using this guide on reddit to do it, but it doesn't seem to work. It appears to create an empty mp3 file that displays an error when i try to play it and the meta data is also completly blank. Here is the batch script: for %%a in ("Downloaded\\*.*") do (...) -- youtube-dl, this guide,

31 March

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

20:45
I need an azure product that executes my intensive ffmpeg command then dies, and i only get charged for the delta. Any Tips? - gamers hd Newest 'ffmpeg' Questions - Stack Overflow

I need an azure product where i can run my ffmpeg process on but i dont want to deal with acces overhead etc. But i need to be able to specify how strong the cpu and stuff should be. So consumption functions would be to weak & Premium functions are billed with a fixed rate so i cant use that either I tried first using a webapi but those are quite costly and because the commands are extremely sudden like in a couple seconds it can go to 100% cpu usage, so scalinng solutions even if i could afford it would be quite hard. I'm basicly looking for something that i can (...)
18:26
Converting MP3/MP4 to WAV in the Frontend Using ffmpegwasm with Next.js Results in Module Not Found Error - ryuma Newest 'ffmpeg' Questions - Stack Overflow

I'm attempting to use ffmpegwasm in a Next.js project to convert MP3 or MP4 files to WAV format directly in the frontend. However, I encounter a "Module not found" error during the process. I have made sure to use the latest version of Next.js. Below is the error message and the code snippet where the issue occurs. I'm seeking assistance to resolve this problem, as it has become quite troubling. error ./node_modules/ⓐffmpeg/ffmpeg/dist/esm/classes.js:104:27 Module not found 102 | if (!this.#worker) 103 | this.#worker = classWorkerURL ? > 104 | new (...)
18:26
Get remote MKV file metadata using nodejs - Ali Rahmani Newest 'ffmpeg' Questions - Stack Overflow

I need to extract the softsubs embeded into an mkv file hosted on a remote server using nodejs. All of the solutions I've found online so far are using local files, and others are either poorly documented or throwing unknown errors that I can't find online; That doesn't work for me. I need to extract subtitles from the remote file (like http://some-url.com/videos/video.mkv) without downloading the entire file to use it in my web-based (...)
17:10
Choose download resolution in m3u8 list with ffmpeg - Bruno Andrade Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to download video from a m3u8 playlist using ffmpeg but I do not know how to choose the resolution to download. Currently the command is downloading the highest version the command I am using is: /home/user/bin/ffmpeg -user_agent "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0" -i "https://sitevideo.com/list.m3u8" -c copy "/home/file/video.ts" My list is this #EXTM3U #EXT-X-VERSION:3 #EXT-X-STREAM-INF:BANDWIDTH=400000,NAME="low" size1.m3u8 #EXT-X-STREAM-INF:BANDWIDTH=800000,NAME="med" size
05:15
After using ffmpeg to remove some streams in mkv file, it takes much longer to open the media file in potplayer in Windows - r ne Newest 'ffmpeg' Questions - Stack Overflow

It is well known that ffmpeg command line can be used to remove some streams in mkv or mp4 files, and I have no problem in doing so. ffmpeg -i input.mp4 -map 0 -map -0:a:3 -map -0:a:6 -c copy output.mp4 The only issue I meet sometimes is, the result media files in mkv or mp4 are much much slower to be opened by player. I cannot figure out the real reason and bypass it. Any hint or help on solving this issue? Thanks!

30 March

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

20:32
ffmpeg: error while loading shared libraries: libopenh264.so.5 - 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.
13:05
Implementing trim and fade filters with ffmpeg - MP3 [closed] - thsk Newest 'ffmpeg' Questions - Stack Overflow

Endeavor to both TRIM and apply IN and OUT fades to a number of MP3 files using ffmpeg. Specifically trimming off a [400mS] length from the start, followed by a [400mS] fade up to full volume, then a [400mS] fade down at the conclusion of the recording. My obstacle is making the fade out function correctly. Have employed ffprobe to determine the total length of the file which is used in the $END variable. The following command appears to work correctly for the trim and the afade-in. ffmpeg -ss 00:00.4 -i "$FILENAME" -af "afade=t=in:st=0:d=0.4" -c:a libmp3lame "$NEWFILENAME" (...)
11:00
Overlaying frame number with ffmpeg [duplicate] - DMagma Newest 'ffmpeg' Questions - Stack Overflow

This should be simple but it is giving me fits and I haven't been able to find this specific problem. I am trying to overlay the frame number on a set of videos but my ffmpeg command string is ignoring any text overlay that has anything to do with a frame number. For example, these produce the correct overlay "-vf drawtext=fontfile='Arial.ttf': text='TEST': fontsize=30: fontcolor=yellowⓐ1.0:x=(w-text_w-15):y=15" "-vf drawtext=fontfile='Arial.ttf': text='%camera%': fontsize=30: fontcolor=yellowⓐ1.0:x=(w-text_w-15):y=15" "-vf (...)

29 March

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

14:20
I get an error when republishing the image I shot with ros2 run ffmpeg [closed] - Seher Elbasan Büyük Newest 'ffmpeg' Questions - Stack Overflow

I get the following errors when republishing the image I took with ros2 run ffmpeg.; ros2 run image_transport republish ffmpeg in/ffmpeg:=image_raw/ffmpeg raw out:=image_raw/uncompressed --ros-args -p "ffmpeg_image_transport.map.hevc_rkmpp:=hevc"` terminate called after throwing an instance of 'image_transport::TransportLoadException' what(): Unable to load plugin for transport 'image_transport/ffmpeg_sub', error string: According to the loaded plugin descriptions the class image_transport/ffmpeg_sub with base class type (...)
20:54
Merge Azure mp4 blobs via API (Preferred Azure) - gamers hd Newest 'ffmpeg' Questions - Stack Overflow

I need to join multiple clips in to 1 video file. I tried doing it on my azure consumption serverless function but with bigger files its very slow and sometimes gives errors This is part of a bigger orchestrator functon where i create clips, merge them replace audio and upload it the finalized version to my blobstorage.
20:09
Merge (concat) all video file present in '43. DP (Part1)' and put it into '43. DP (Part1)' and give name merged (concat) file to folder name - Anu Mau Newest 'ffmpeg' Questions - Stack Overflow

I have parent folder alpha part 3 which contain child folder 43. DP (Part1), 44. DP (Part2), 45. DP (Part3). I want to merge (concat) all video file present in 43. DP (Part1) and put it into 43. DP (Part1) and give name merged (concat) file to folder name. And as it is do for all. alpha part 3 ├── 43. DP (Part1) │ ├── _43.1_Introduction to DP.mp4 │ ├── _43.2_What is DP_ (Definition).mp4 │ ├── _43.3_Ways of DP.mp4 │ ├── _43.4_7 Important Concepts.mp4 │ ├── _43.5_Climbing Stairs (Recursion).mp4 │ ├── _43.6_Climbing Stairs (Memoization DP).mp4 │ ├── _43.7_Climbing (...)
16:06
Probably memory leakage on ffmpeg when doing a multiple trims and concat filter. What's the workaround? - haubna Newest 'ffmpeg' Questions - Stack Overflow

Example: ffmpeg.exe -i "input1.mp4" -filter_complex "[0:v]trim=start=3624.005:end=3630.005,setpts=PTS-STARTPTS[vidFinal];" -map [vidFinal] output.mp4 ffmpeg just reads through the entire video file just to cut 6 seconds out of the video. Is there a way to avoid this with -filter_complex? Because I have multiple trims of multiple large video files and reading through a couple of 6 hour video files when needing only 6 seconds parts is too (...)
13:00
Difference between DirectShowSource() and FFmpegSource2() in AviSynth - MarianD Newest 'ffmpeg' Questions - Stack Overflow

For non .avi A/V sources (as .mp3, .mp4, etc.) there are (at least) 2 possibilities for reading those media files in AviSynth (in Windows): The built-in media filter DirectShowSource(), using Microsoft's DirectShow media architecture. The AviSynth Plugin FFmpegSource2() alias FFMS2() using FFmpeg and nothing else. What are advantages and disadvantages of them? Which is more reliable, frame / sample accurate, etc.? (...) -- Microsoft's DirectShow, FFMS2(), FFmpeg
11:41
Why does fluent-ffmpeg only work when it throws the error Output stream closed - volume one Newest 'ffmpeg' Questions - Stack Overflow

I am using fluent-ffmpeg to process a video file (and then upload that to Amazon S3). The code is very straightforward but it only works if: pipe option end: true is set in .output() which has a side-effect that causes the following console log output Processing: 19.261847354642416% done Processing: 32.365144874807335% done Processing: 48.80978326261429% done Processing: 78.35771917058617% Processing: 91.49377493455148% done Processing: 99.91264359125745% done An error occurred: Output stream closed Despite that error, it seems the file is (...) -- fluent-ffmpeg
11:15
libav audio latency / cannot set audio_buffer_size - Heiner Newest 'ffmpeg' Questions - Stack Overflow

For an audio/video capturing tool we open live capture devices with the following code: AVFormatContext* ic = nullptr; const AVInputFormat *iformat = av_find_input_format("dshow"); AVDictionary *options = nullptr; av_dict_set(&options, "audio_buffer_size", "50", 0); av_dict_set(&options, "framerate", "30", 0); av_dict_set(&options, "video_size", "640x360", 0); av_dict_set(&options, "sample_rate", "48000", 0); auto err = avformat_open_input(&ic, "video=Integrated Camera:audio=Microphone Array", iformat, &options); Audio (...) -- documentation
10:52
libav - undefined reference to 'av_frame_alloc' and more - IIIIIIIIIIIIIIIIIIIIII Newest 'ffmpeg' Questions - Stack Overflow

I am trying to compile this tutorial from the libav doc: link I changed nothing on the code! But when I compile it with: gcc test.c -lavformat -lswscale -lavdevice -lavformat -lavcodec -lavutil -lpthread -lm -o example I get these errors: undefined reference to `check_sample_fmt' undefined reference to `select_sample_rate' undefined reference to `select_channel_layout' undefined reference to `av_frame_alloc' undefined reference to `av_frame_free' Searching Dr.google I read that it maybe has something to do with (...) -- link
08:18
An error occurred after encoding with h264_nvenc - jiang hang Newest 'ffmpeg' Questions - Stack Overflow

1373x768 yuv420p picture The ffmpeg api(avcodec_send_frame, avcodec_receive_packet) will write the avpacket-data data to the file after the encoding is successful, and then decode t using ffmpeg command line, save AvPacket::data, the resulting picture is not normal Directly use ffmpeg command line encoding, and then decode, the resulting picture is normal decodec command： ffmpeg -i out.h264 -ss 0 -frames:v 1 output_frame.png ecodec command： ffmpeg -s:v 1376x768 -pix_fmt yuv420p -i input.yuv -c:v h264_nvenc out.h264 exception picture: enter image (...) -- enter image description here
05:25
ffmpeg can't extract a frame near the end of the video - Rob Allsopp Newest 'ffmpeg' Questions - Stack Overflow

From what I gather, using ffmpeg to fully decode a video should give me an accurate duration. If I use: ffmpeg -i my_vid.mov -f null - for a particular video, I get an output of: ... frame= 901 fps=0.0 q=-0.0 Lsize=N/A time=00:00:30.52 bitrate=N/A speed= 247x ... But when I run the following command to extract a frame near the end, it fails: ffmpeg -i my_vid.mov -ss 00:00:30.450 -q:v 2 -vframes 1 test_frame.jpg outputs: Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used) Backing up to (...)
05:00
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 (...)
03:18
Incorrect values for song length (duration) in Mp3tag after ffmpeg FLAC to MP3 conversion - Clueless Newest 'ffmpeg' Questions - Stack Overflow

The problem As per this post, I use the following command to convert a flac file to mp3 while keeping all metadata: ffmpeg -i input.flac -ab 320k -map_metadata 0 -id3v2_version 3 output.mp3 When inspecting the converted mp3 file by right-clicking it, going to properties and then details, everything looks in order. The value for "Length" is correct. When inspecting the converted mp3 file with Mp3tag, the value for "Length" is different. From my testing, the "Length" value is consistently about 28% of what it is supposed to be. Normally, this (...) -- , , , https://cloudconvert.com/flac-to-mp3, here's the link
01:36
How to use the 'shortest' argument with ffmpeg-python - MyNameIsTrez Newest 'ffmpeg' Questions - Stack Overflow

I'm using ffmpeg-python for my first time. I'm trying to use the shortest=1 argument in ffmpeg.output(), but my program keeps giving me errors when I use it. I want to replace the audio from foo.mp4 with the audio from bar.webm, while keeping the visuals of foo.mp4. I got this working, but the problem is that ffmpeg.concat by default keeps playing the audio from bar.webm while the visuals from foo.mp4 have stopped playing. According to this FFmpeg docs page, this is the intended behaviour: "The concat filter will use the duration of the longest stream in each (...) -- ffmpeg-python, this FFmpeg docs page
01:18
NodeJS stream MKV as MP4 video - SirMissAlot Newest 'ffmpeg' Questions - Stack Overflow

I'm trying to stream MKV video as MP4 on the fly with out saving the converted file first I've tried without conversion: public async streamById(req: Request, res: Response) const movieId = req.params.id; const movie = await MovieModel.findById(movieId); if (!movie) return res.status(404).send( message: 'Movie not found' ); const filePath = movie.path; const stat = fs.statSync(filePath); const fileSize = stat.size; const range = req.headers.range; if (range) const parts = (...)
00:22
ffmpeg - excerpt from a large video file, preserving its additional streams - BabaG Newest 'ffmpeg' Questions - Stack Overflow

I have a video file that has a stereo audio track and two additional stereo streams of audio. I'll include the mediainfo details at the end. The closest I've come to being able to excerpt a portion of this large file, while keeping all of the streams, is this: ffmpeg -i output.mov -ss 1200 -map 0 -c copy -to 00:21:00 -map 0:1 -c:a copy -map 0:2 -c:a copy output_excerpt.mov This seems to give me a bunch of extra streams, though. What's a correct command to do this? I was expecting four streams, one video, a second for the video's main audio, then two (...)

28 March

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

18:31
ffmpeg video compression / specific file size [closed] - justin.esders Newest 'ffmpeg' Questions - Stack Overflow

Currently I have 80mb movies that I want to use ffmpeg to convert down to say about 10mb or 15mb. I know there will be a quality loss but they will need to have sound. Is there a way to either specify a file size or higher compression than what I have done previously ffmpeg -i movie.mp4 -b 2255k -s 1280x720 movie.hd.ogv They are currently about 25mb a piece
15:25
ffmpeg, how to cut to exactly at the start and end time? [closed] - Wayne Julian Newest 'ffmpeg' Questions - Stack Overflow

According to this article you can only cut the time, but not specify when to cut from the original video. So the end time will always be wrong. You need to calculate each time on the timeline when your video will end. e.g. -ss 01:30:40 -to 03:03:05 will cut your video in the wrong order, because it starting the calculation not from the 00:00:00 of the video, but from the -ss 01:30:40 Is there a workaround for this? example command: ffmpeg -ss 00:14:15 -an -i "2022-05-30.mp4" -to 01:30:40 -crf 23 -c:v libx264 PART1.mp4 I will lose 14:15 minutes here, it is clearly a (...) -- this article
15:10
How to convert High bitrate MP3 to lower rate using FFmpeg - user4571931 Newest 'ffmpeg' Questions - Stack Overflow

We want to convert 320kbps mp3 file to 128kbps mp3 so currently we are using below ffmpeg command but its not working. ffmpeg -i input.mp3 -codec:a libmp3lame -qscale:a 5 output.mp3 Result:-the output bitrate same as input mp3. And we are following the FFmpeg Encoding guideline for that here is the link :- https://trac.ffmpeg.org/wiki/Encode/MP3 so please suggest any solution. -- https://trac.ffmpeg.org/wiki/Encode/MP3
14:52
I am converting images to video using ffmpeg in koltin but i am getting error - Mohith_karthikeya Newest 'ffmpeg' Questions - Stack Overflow

i implement ffmpeg by using this gitbub by this reference :5 https://github.com/tanersener/mobile-ffmpeg in koltin my code is : class BurstModeToVideo( private val context: Context, private val onVideoConverted: (File) -> Unit ) private val vibeDirectory = File(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES), "vibes") private val outputDirectory = context.getExternalFilesDir(Environment.DIRECTORY_MOVIES) fun convertBitmapToJpeg(vibes: List) if (!vibeDirectory.exists()) vibeDirectory.mkdirs() (...)
08:29
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

27 March

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

22:35
FFMPEG fast quality video encoding without quality loss & less storage occupancy (maybe using GPU) - Diwash Mainali Newest 'ffmpeg' Questions - Stack Overflow

I Have written a go code but it is slow and the video compression rate is also not that impressive. I am new to FFMPEG and my entire project depends on FFMPEG. I have tried different video codecs like vp9, h264, h265, NVENC, AV1, etc. All of them were too slow (maybe I am not good enough to optimize it). My project is based on Go and the current codec that I am using is libx264. Can anyone help me optimize the video encoding part of my project. Libx264: func encodeVideo(fileName, bitrate, crf, preset, resolution string) *exec.Cmd return (...)
18:45
Adding slides of a pdf presentation to the audio file of the same presentation with ffmpeg - revher Newest 'ffmpeg' Questions - Stack Overflow

I want to add slides of a pdf presentation to the audio file of the same presentation with ffmpeg (or whatever). I split the pdf presentations using pdftoppm into numbered png images and tried to use ffmpeg to sync the audio file with the images. But I am wondering if the output file could be smaller. Example, the following command will split file 'foo.pdf' into file 'output-01.png', 'output-02.png' etc: $ pdftoppm foo.pdf -png output Then I listen to the audio file 'foo-audio.mp3' and noted the end of each slide in minutes (...) -- a the ffmpeg mailing list
18:31
Error opening input files: Invalid data found when processing input - Master's Time Newest 'ffmpeg' Questions - Stack Overflow

I am creating disnake music bot. The error is: [in#0 ⓐ 00000233f8d71500] Error opening input: Invalid data found when processing input Error opening input file https://www.youtube.com/watch?v=duDUqBtxwXk. Error opening input files: Invalid data found when processing input Here is part of my code: import disnake import asyncio from yt_dlp import YoutubeDL import ffmpeg YTDL_OPTIONS = 'format': 'bestaudio', 'noplaylist': 'False', 'simulate':'True', (...)
18:10
How can I upscale a stereo signal using PLII on a VM - andersmi Newest 'ffmpeg' Questions - Stack Overflow

I want to upscale a stereo signal with PLII from an input on a VM and sent it to an output after the upscale. I am thinking of installing Voicemeeter/Virtual Audio Cable or something like that to get an input on the VM. I will then be able to use Dante Via on the VM host to sent the audio to the VM input and receive it again from the VM output on Dante Via then send it to my amplifier. The solution needs to be able to initialize itself after reboot. I have looked into different solutions the most promissing seems to be FFDShow and FFMpeg, but there is not much (...)
19:05
Batch reduce bitrate and size of mp3 audio files with ffmpeg - Wes Modes Newest 'ffmpeg' Questions - Stack Overflow

I was looking for a way to batch reduce mp3 bitrate on my sizable collection of mp3 files. It was surprising difficult given that this must be a super common thing to want to do. In fact, there are dozens, maybe hundreds, of posts from people asking how to do it, and dozens of utilities available for varying amounts of money that claim to do just that. Looking around and trying some of the free software, I was surprised that none made the task of batch converting/adjustment easy. If I wanted to convert a single file, I'm told this is a decent way to do (...)

Recent posts

Preferences

Feeds

SPIP Compass

Sedna

17 May

16 May

15 May

14 May

13 May

12 May

11 May

10 May

9 May

8 May

7 May

6 May

5 May

4 May

3 May

2 May

1 May

30 April

29 April

28 April

27 April

26 April

25 April

24 April

23 April

22 April

21 April

20 April

19 April

18 April

17 April

16 April

15 April

14 April

13 April

12 April

11 April

10 April

9 April

8 April

7 April

6 April

5 April

4 April

3 April

2 April

1 April

31 March

30 March

29 March

28 March

27 March