15 juin

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

• 00:17
  Add multiple overlapping audio files to a video [duplicate] - JTinkers Newest 'ffmpeg' Questions - Stack Overflow
  Essentially, I'm trying to achieve this: The only problem with that is - I'm using ffmpeg programatically, meaning - there won't be any predefined sounds at predefined times, instead - I have code that generates these and executes ffmpeg with the following arguments: -f concat -r 60 -safe 0 -i VIDEO_OUTPUT_PATH/fileName.txt audioArgs -c:v libx264 -preset fast -crf 23 -vf \\"scale=1080:1920,format=yuv420p\\" -c:a aac -b:a 192k -af \\"afade=t=out:st=totalSeconds - 3:d=3\\" mapArgs -async 1 -movflags +faststart -t totalSeconds (...) --
• 02:00
  ffmpeg trouble with NetMaui and Android - Billy Vanegas Newest 'ffmpeg' Questions - Stack Overflow
  I find myself in a following predicament. While I work with Visual Studio 2022, ffmpeg performs flawlessly on Windows platform. However, I'm encountering difficulties when attempting to replicate this functionality on Android. Despite exploring NuGet packages like FFMpegCore, which seem to be ffmpeg wrappers but lack ffmpeg itself, I'm still struggling to find a clear path forward. I've even tried integrating ffmpeg-kit for Android as per the instructions, only to face repeated failures and a sense of confusion. I must admit my puzzlement: why isn't there a (...)
• 00:03
  Running a Python script directly within FFmpeg's filter complex - Rino Newest 'ffmpeg' Questions - Stack Overflow
  As the title suggests I wish I could run my detection script inside the filter complex. The script should get input "IN" from the filter complex "OUT" and output a boolean value to filter this frame or keep it. Since FFmpeg is open source I wanted to ask Is this possible to do? If yes any suggestion on where should I start or any help/hint is appreciated. BTW I am new to C programming. I have a Java/python background.

14 juin

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

• 07:55
  Use SDL2 play yuv file but actually no display [closed] - guan xi Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to demux and decode the media file, and then use SDL2 to play the raw data, everything is ok. no error no warning, but SDL2 windows does not dispaly video content. All i know is frame dts is ordered in SDL2 play queue and data is good. void VideoPlay::play_video() while (is_running_) refresh_loop_wait_event(&event_); switch (event_.type) case SDL_KEYDOWN: if (event_.key.keysym.sym == SDLK_q) LOG_INFO("Q quit"); is_running_ = false; frame_queue_->abort(); break; case SDL_QUIT:  (...)
• 19:05
  How can I render frames decoded by FFmpeg using hardware decoding with D3D11? - mercuric taylor Newest 'ffmpeg' Questions - Stack Overflow
  I have completed the process of decoding a video frame using FFmpeg. The format of the decoded frame is AV_PIX_FMT_NV12. Now, I want to render this frame to the screen using D3D11. My questions are: What is the equivalent concept in D3D11 for a decoded frame? Is it a texture? I have seen many solutions that convert NV12 data to RGB, but it seems that DX11 does not require this conversion anymore. I just want to display this frame, and since my frame is on the GPU, is there a more convenient way to render directly on the GPU without copying? Please forgive my (...) -- https://github.com/balapradeepswork/D3D11NV12Rendering/tree/master/D3D11NV12Rendering
• 17:27
  Can you write a video file with out of order (input) frames? - Blindy Newest 'ffmpeg' Questions - Stack Overflow
  I know video files can (and do) contain frames that are encoded out of order, which is why dts and pts exist, but can you send your frames in an arbitrary order, with their correct pts, and expect the video file to play? Specifically I'm wondering about concatenating video files, can I decode both inputs in parallel and send the frames with the correct merged pts as they get decoded? And if so, what would the playback performance implications (...)
• 16:59
  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
• 15:12
  Sendcmd not recognizing filter instance names ffmpeg version 7 - DanHabib Newest 'ffmpeg' Questions - Stack Overflow
  On ffmpeg version 7.0, using sendcmd doesn't work with instance names. Ideally I wouldn't use the PARSED_x_filter syntax Simple repro ffmpeg -y -i input.mp4 -filter_complex 'cropⓐcrop_4=in_h*(9/16):in_h:0:0,sendcmd=f=sendcmd.txt' -c:v h264_videotoolbox output.mp4 Send Command File: sendcmd.txt 0 crop_4 x 0; 1 crop_4 x 10; 2 crop_4 x 20; 3 crop_4 x 30; 4 crop_4 x 40; 5 crop_4 x 50; 6 crop_4 x 60; 7 crop_4 x 70; 8 crop_4 x 80; 9 crop_4 x 90; 10 crop_4 x 100; 11 crop_4 x 110; 12 crop_4 x (...)
• 07:01
  RTSP Client for H264 Audio/Video Stream - Jean-Philippe Encausse Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking for a simple way to get data of an IP Camera RTSP Stream (using H264 Audio/Video) and get on the other side a frame by frame byte[] a stream of the audio After many research EmguCV Capture seems hanging forever (no answer from forum) There is many (too big) RTSP Server few decode H264 There is "slow" ffmpeg wrapper There is some managed DirectShow wrapper So I don't know where to go ? And how to do this ? It seems iSpyCamera is doing the job but it's a big project not a little (...) -- RTSP Server
• 06:21
  Issues Streaming FLV Video from RTSP using FFmpeg and Python to flv.js - yternal Newest 'ffmpeg' Questions - Stack Overflow
  I am currently working on a project where I need to stream video from an RTSP source, convert it to FLV format using FFmpeg, and then send the FLV stream to clients upon request. The code I have written to achieve this is as follows: import subprocess from flask import Flask, Response, stream_with_context app = Flask(__name__) flv_header = b'' def update_stream(ffmpeg_path="ffmpeg", rtsp_url='rtsp://192.168.1.168/0', rtsp_id="rtsp01"): global flv_header command = [ ffmpeg_path, '-i', rtsp_url,  (...)

13 juin

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

• 21:43
  python ffmpeg not decoding text from webcam video frame - sar5050 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to construct python script with ffmpeg command to capture a webcam, decode the text from the camera frame and stream the same through an RTSP stream. I am able to receive the streaming through the player, but text decoding is not happening with the following example code: Help is needed to understand the problem, whether it is a piping problem or any other mistake in the code. ffmpeg_cmd = ( "ffmpeg -f v4l2 -framerate 30 -video_size 1280x720 -i /dev/video0 -f alsa -i hw:0 -c:v libx264 -preset ultrafast -tune zerolatency -pix_fmt yuv420p -c:a aac -b:a 128k -f rtsp (...)
• 15:46
  Ffmpeg Error: Error opening output file .output_withsrt.mp4 - Priyanshu Tiwari Newest 'ffmpeg' Questions - Stack Overflow
  I'm building a video caption writer web app, for embedding subtitle in a video I'm using ffmpeg. But there is a error opening output file, everything is working fine in a cmd, but in VS Code it's not working. My code: import ffmpeg from "fluent-ffmpeg"; import NextRequest from "next/server"; ffmpeg.setFfmpegPath('C:\\\\ffmpeg\\\\bin\\\\ffmpeg.exe') export async function POST(req: NextRequest) try const videoWithSubtitlesPath = path.join( process.cwd(), "public", "subtitle_video.mp4" );  (...)
• 13:37
  How do I prevent an extended frame when suspending and resuming an ffmpeg process in C#? - this_is_a_display_name Newest 'ffmpeg' Questions - Stack Overflow
  I have a c# application where I have control of an ffmpeg (https://www.ffmpeg.org/) process. I am using it to capture video and audio, either from desktop or webcam. I am using code similar to the answer from this question (How to pause/resume ffmpeg video capture in windows from C# application) to suspend and resume the process. However, while suspended, the captured video extends the frame it was suspended on for the entire duration of the suspension. My arguments passed into the process: -f gdigrab -framerate 30 -i desktop -f dshow -i audio=\\"Stereo Mix (Realtek(R) Audio)\\" (...) -- https://www.ffmpeg.org/
• 13:18
  integrate ffmpeg with spring boot - Parkash Sbd Newest 'ffmpeg' Questions - Stack Overflow
  I have a react native app much like social media app.Users upload their photos and videos from that app .While uploading I wanna show processing sign with percent and I have RESTful api endpoints written in spring boot and wanna resize media(photos and videos).Is there any easy way to implement it.I have heard of ffmpeg but I don't know how to integrate it with spring boot. Thanks.
• 12:24
  Can ffmpeg read-only options be used via the command line? - Quppa Newest 'ffmpeg' Questions - Stack Overflow
  For example, ffmpeg's ebur128 filter has read-only (AV_OPT_FLAG_READONLY) export (AV_OPT_FLAG_EXPORT) options integrated, range, lra_low, lra_high, sample_peak and true_peak (source). Is there a way to get the output values for filter options like these when using the command line? My command line: ffmpeg -i test.mp3 -af ebur128=integrated:framelog=quiet -f null - Output (ffmpeg 7.0.1): [Parsed_ebur128_0 ⓐ 000001e0c2f27880] Unable to parse option value "integrated" as boolean Error applying option 'video' to filter 'ebur128': Invalid (...) -- ebur128 filter, source
• 09:28
  Adding subtitles to video using Laravel FFMpeg - Pieter van der Mullen Newest 'ffmpeg' Questions - Stack Overflow
  I've been trying to convert my console command to work with the Laravel FFMpeg package. The issue that I've been running into is that the available Filters are not really well documented. This is the Laravel code that is not working. The only part that does not work is the last addFilter part with the srt and font file. FFMpeg::fromDisk('local') ->open([$backgroundImage, $audioFile]) ->export() ->toDisk('local') ->addFilter(function (FrameFilters $filters) $filters->custom('scale=1920:1080'); )  (...)
• 08:35
  There is no data in the inbound-rtp section of WebRTC. I don't know why - qyt Newest 'ffmpeg' Questions - Stack Overflow
  I am a streaming media server, and I need to stream video to WebRTC in H.264 format. The SDP exchange has no errors, and Edge passes normally. These are the log debugging details from edge://webrtc-internals/. Both DTLS and STUN show normal status, and SDP exchange is also normal. I used Wireshark to capture packets and saw that data streaming has already started. The transport section (iceState=connected, dtlsState=connected, id=T01) also shows that data has been received, but there is no display of RTP video data at all. timestamp 2024/6/13 16:34:01 bytesSent (...) -- enter image description here
• 08:01
  Filter crop:default has an unconnected output - Ayaz Alavi Newest 'ffmpeg' Questions - Stack Overflow
  Following command giving Filter crop:default has an unconnected output error ffmpeg -i "Introduction_to_Urgent_Excellence.mp4" -filter_complex_script crop_filters.txt -acodec aac output_video.mp4 Below is the log file and crop filters https://qtext.io/dt50 https://qtext.io/ki7c -- https://qtext.io/dt50, https://qtext.io/ki7c
• 02:52
  Audio and video not lining up after ffmep extraction [closed] - sundrycode Newest 'ffmpeg' Questions - Stack Overflow
  I am doing a python script that cuts silence over particular words (whatever the user defines). I'm using Pydub and moviepy (both ffmeg). The problem is the audio and video don't line up. They are both the same length (a few milliseconds difference sometimes) and the farther into the video you go the more off they become. Thinking it could be a problem with either the cutting the silence into the audio or the way the video gets put back together, I tried just extracting the audio from the video (without editing the audio) and taking it into a video editing program. I (...)
• 01:21
  splitting video into shots with ffmpeg from within python - ludog Newest 'ffmpeg' Questions - Stack Overflow
  After some searching, the following command works to split my input video into shots, and save the first frame from each shot. ffmpeg -i input_vid.mp4 -filter:v "select='gt(scene,0.1)',showinfo" -vsync 0 frames/%05d.jpg When run from the terminal, it prints a line to what I think is stderr for each of the extracted frames, like so Parsed_showinfo_1 ⓐ 0x7f0198003540] n: 884 pts: 132552 pts_time:2209.2 duration: 2 duration_time:0.0333333 fmt:yuv420p cl:left sar:0/1 s:480x360 i:P iskey:0 type:P checksum:F2D8FCAA plane_checksum:[2D2F32C1 6E0164EC 832064FD] mean:[16 (...)

12 juin

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

• 20:34
  Using FFMPEG with Cookies? jsessionid? [closed] - mario anne Newest 'ffmpeg' Questions - Stack Overflow
  Sorry if I just missed the answers but I have searched for one and a half hour already. I want to use FFmpeg to download a video. But it doesn't work. I got the following link: " https://streaming.magentamusik.de/csm/live/141580688/6.m3u8;jsessionid=8FC831D877B0B49D91525B7D5B71C62B.csm-e-ces1aeuw1live102-0f371de46adbfb70f.tls1.yospace.com?yo.aas=streamingmagentamusic360-eb.tls1&yo.up=https://streaming.magentamusik.de/hls/live/573870/magentamusik1/&yo.eb.fb=aHR0cHM6Ly9zdHJlYW1pbmcubWFnZW50YW11c2lrLmRlL2hscy9saXZlLzU3Mzg3MC9tYWdlbnRhbXVzaWsxL2luZGV4Lm0zdTg&yo.ac=true&yo. -- https://streaming.magentamusik.de/csm/live/141580688/6.m3u8;jsessionid=8FC831D877B0B49D91525B7D5B71C62B.csm-e-ces1aeuw1live102-0f371de46adbfb70f.tls1.yospace.com?yo.aas=streamingmagentamusic360-eb.tls1&yo.up=https://streaming.magentamusik.de/hls/live/573870/magentamusik1/&yo.eb.fb=aHR0cHM6Ly9zdHJlYW1pbmcubWFnZW50YW11c2lrLmRlL2hscy9saXZlLzU3Mzg3MC9tYWdlbnRhbXVzaWsxL2luZGV4Lm0zdTg&yo.ac=true&yo.pdt=sync&yo.av=3&yo.po=3&iOS_QS=1&yo.ac=true&yo.pdt=sync&yo.av=3&externalId=magentamusik1
• 23:25
  Merge Multiple Videos using node fluent ffmpeg - shyamshyre Newest 'ffmpeg' Questions - Stack Overflow
  requirement is to read all the files in the directory and merge them. I am using node fluent-ffmpeg to achieve this. First of all reading all the files in the directory appending concatenating the string by adding .input. var finalresult="E:/ETV/videos/finalresult.mp4" outputresult : It consists of all the files read in the directory. /*Javascript*/ MergeVideo(outputresult); function MergeVideo(outputresult) console.log("in merge video"); var videostring = ""; for(i=1;i It gives the following error: TypeError: (...)
• 13:53
  AVFrame with NV12 format breaks using D3D11 HW acceleration - dima2012 terminator Newest 'ffmpeg' Questions - Stack Overflow
  I have a ffmpeg-autogen video decoder, im trying to use a D3D11 as HW accelerator, but the frame i get in result(with NV12 format) is broken. If im doing the same with Vulkan as accelerator, everything works fine, but vulkan uses more graphic card resources.. For rendering i use OpenTK, received frames i convert to RGB with textures and shaders. Below my decoder initialization. public VideoStreamDecoder(AVCodecParameters* parameters, AVCodec* codec) AVCodec* _codec = codec; _pCodecContext = ffmpeg.avcodec_alloc_context3(_codec);  (...) -- normally working, broken, image, everything
• 13:39
  FFmpeg.Autogen : Issue with Zero-Sized Atom Boxes in MP4 Output - Alexander Jansson Newest 'ffmpeg' Questions - Stack Overflow
  I just started learning ffmpeg using ffmpeg.autogen wrapper version 5.1 in c#, and ffmpeg shared libs version 5.1. Im trying to facilitate a class which screenrecords using gdigrab and produces streamable mp4 to a/an buffer/event. Everything seems to work as suposed to with no error except that the outputstream produces atom boxes with 0 in size thus small file size aswell, no data seems to be produced in the boxes, the "debug test mp4 file" is analyzed with MP4Box and the box info is provided in the thread. To be more specific why does this code produce empty atomboxes, is someone (...) -- https://pastebin.com/xkM4MfG7
• 13:38
  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
• 11:40
  ffmpeg command in my Python code is not working in Docker - Akhil Varghese Newest 'ffmpeg' Questions - Stack Overflow
  I am developing a Python (Django-REST) app for video processing. I need to extract the frames of videos and need to save a live stream(RSTP stream) to the desired directory. I am using ffmpeg for saving the RTSP stream, and I have also Dockerized the app. Live Stream save method import subprocess ⓐapi_view(['POST']) def saveRtsp(request): logger.info("Saving RTSP URL") rtsp_url = 'rtsp://192.168.1.117/sample2.mkv' rtsp_video_path = 'rtsp.mp4' try: ffmpeg_command = [ 'ffmpeg',  (...) -- ,
• 08:08
  Libavcodec (FFMPEG) D3D11 hardware acceleration not outputting hardware frames - luckybroma Newest 'ffmpeg' Questions - Stack Overflow
  The Problem I'm trying to get FFMPEG to output D3D11 2D textures directly as Frames. As I understand, this is infact possible. The reasoning for this, is I can then decode the YUV format directly on the GPU and then display it without having to Marshall it back to the CPU. My problem is that I can't get the decoder to actually output frames in the desired format, they are always software YUV420J. Is this because I'm not initializing the decoder properly? Or perhaps there is some other configuration I'm missing. The Details I've been (...) -- example
• 03:37
  Unable to Play Video Stream on Flask-FFmpeg Media Server on Subsequent Requests - yternal Newest 'ffmpeg' Questions - Stack Overflow
  Problem Description: I am trying to create a media server using Flask and FFmpeg. The server converts an RTSP stream to FLV format for playback in a web browser, and I am testing it using ffplay. The server starts successfully, and the data returned from the first request can be played using ffplay. However, when I interrupt the ffplay request and make it again, ffplay is unable to play the video and displays an "Invalid data found when processing input" error. I am using the following command to test with ffplay: ffplay http://127.0.0.1:8000/flv/0 My current Flask (...)

11 juin

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

• 19:03
  How do I use ffmpeg to convert videos (filmed VFR:120), from a playback frame rate of 120 to a PFR of 30 fps, WITHOUT RESAMPLING? [closed] - twilightecologist Newest 'ffmpeg' Questions - Stack Overflow
  I've never used ffmpeg (in Windows Command) before and am a newbie coder so any help would be much appreciated! I have videos that were filmed with a variable frame rate of 120fps. These videos have a playback frame rate of 120fps, and I need to convert them to a playback frame rate of 30fps without resampling. I tried running the below line of code and managed to create a file that listed a frame rate of 30fps (when I left click the file I find this info within Properties >Details) , but the length of the video (listed in Properties) had not changed, I would expect the new (...)
• 19:40
  GoPro Max FFMPEG Undistortion [closed] - Echo Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use ffmpeg to undistort footage from a GoPro MAX. The GoPro outputs footage in the form of an LRV file, which contains both a front view and a back view (not a navigable 360 video). In other words, I'm taking one of these "180 degree" videos and undistorting it in the following manner: ffmpeg -i FILENAME.MP4 -vf lenscorrection=cx=0.5:cy=0.5:k1=-0.535:k2=0.065 NEWFILENAME.MP4 Additional info that may help: Resolution is 704x704, Lens type appears to be Max SuperView These k1 and k2 values appear to work decently well for undistortion, yet they result (...)
• 16:29
  How do you get pydub to find ffmpeg? - Isaac Howse Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to import pydub into my python program but any time I run the code it says it can't locate where ffmpeg is. I have tried everything including putting "pip install ffmpeg-python" in command prompt, juggling around the locations of the ffmpeg and python files, changing the system environment lables in PATH (although this is not saving for some reason) I don't know what to do from here My exact code from before would've looked like this: import pydub import ffmpeg from pydub import AudioSegment trumpet = (...)
• 15:56
  How to correctly specify the path to a file in -vf media? - Wintreist Newest 'ffmpeg' Questions - Stack Overflow
  Good afternoon, please, I really need help. I'm putting a watermark on the video: with tempfile.TemporaryFile("wb", delete=False, suffix=".png") as watermark_file: watermark_file.write(buff.read()) ( ffmpeg .input(str(path)) .output( os.environ.get("TEMP")+f"\\\\uuid.hex_path.name", vf=f"movie='watermark_file.name' [watermark]; [in][watermark] overlay='overlay' [out]" ) .global_args('-copyts') .run() ) In a temporary folder, I create a file in which I write a watermark from (...)
• 15:50
  FFmpeg Easing function doesn't behave as expected - Alejandro Sanchez Newest 'ffmpeg' Questions - Stack Overflow
  What is the simplest way to add an easing function to an animation? I'm currently trying to animate a zoom value, but for some reason, it goes completely over the final zoom value i constrained it to (my easing function should output values between 0 and 1): This is the part of a bigger expression which i just cannot understand: if(gt(in_time\\,3.7999999046325685)\\,3 - ((0.3) * (((exp((5*(it-3.80)) - 1))/(exp(5*0.80)-1))))\\,3) Note: (exp((5*(it-3.80)) - 1))/(exp(50.80)-1))) are values between 0 and 1 for the animation duration of 0.8 seconds, however the resulting zoom goes (...)
• 12:41
  What steps are needed to stream RTSP from FFmpeg? - user1767754 Newest 'ffmpeg' Questions - Stack Overflow
  What steps are needed to stream RTSP from FFmpeg? Streaming UDP is not a problem, but as I want to stream to mobile devices which can natively read RTSP streams, I couldn't find any setup which tells what exactly is needed. Do I need an RTSP streaming server like LIVE555 or can I use FFmpeg only? My Command: ffmpeg -i space.mp4 -vcodec libx264 -tune zerolatency -crf 18 -f rtsp -muxdelay 0.1 rtsp://192.168.1.200:1234 I get an Input/Output error. Do I need a SDP description to use RTSP? And if yes where do I have to put (...)
• 12:58
  Encode audio to aac with libavcodec - ryan Newest 'ffmpeg' Questions - Stack Overflow
  I'm using libavcodec (latest git as of 3/3/10) to encode raw pcm to aac (libfaac support enabled). I do this by calling avcodec_encode_audio repeatedly with codec_context->frame_size samples each time. The first four calls return successfully, but the fifth call never returns. When I use gdb to break, the stack is corrupt. If I use audacity to export the pcm data to a .wav file, then I can use command-line ffmpeg to convert to aac without any issues, so I'm sure it's something I'm doing wrong. I've written a small test (...) -- http://birdie.protoven.com/audio.pcm
• 10:12
  ffmpeg demux concat video output blinks/stuttering between joined clips - hieroshima Newest 'ffmpeg' Questions - Stack Overflow
  I'm experiencing a strange issue with FFmpeg after partially joining a few MP4 clips into one output file (output.mp4). The problem is that the video between clips randomly blinks or stutters, showing frames from the previous scene in the next scene. This happens in a completely random manner. All my MP4 clips have the same FPS, TBR, and TBN values, except for the bitrate (bolded below), which varies for each clip. These clips were prepared and encoded using AWS MediaConvert to ensure they have consistent parameters. Here’s the ffprobe result for one of the clips: Stream (...) -- https://youtu.be/SfWnCbMeOfw
• 10:18
  FFmpeg.Autogen Wrapper: Issue with Zero-Sized Atom Boxes in MP4 Output - Alexander Jansson Newest 'ffmpeg' Questions - Stack Overflow
  I just started learning ffmpeg using ffmpeg.autogen wrapper version 5.1 in c#, and ffmpeg shared libs version 5.1. Im trying to facilitate a class which screenrecords using gdigrab and produces streamable mp4 to a/an buffer/event. Everything seems to work as suposed to with no error except that the outputstream produces atom boxes with 0 in size thus small file size aswell, no data seems to be produced in the boxes, the "debug test mp4 file" is analyzed with MP4Box and the box info is provided in the thread. To be more specific why does this code produce empty atomboxes, is someone (...) -- https://pastebin.com/xkM4MfG7
• 08:59
  Using pydub on AWS lambda - Bailey Newest 'ffmpeg' Questions - Stack Overflow
  Ok, so I have the same problem as here: Using pydub and AWS Lambda but thought it would be cleaner to re-ask here as I have made some progress (I think?). I followed the instructions here: https://medium.com/faun/how-to-use-aws-lambda-layers-f4fe6624aff1 like this: I created a lambda_function.py file: from python.pydub import AudioSegment print('Loading function') def lambda_handler(event, context): print(event) sound = AudioSegment.from_mp3("https://s3-eu-west-1.amazonaws.com/audio.mp3") etc...  (...) -- https://medium.com/faun/how-to-use-aws-lambda-layers-f4fe6624aff1
• 05:38
  Upload ffmpeg output to S3 - Bruno Munné Newest 'ffmpeg' Questions - Stack Overflow
  When I make the next upload, if the duration of the clip is very short it generates a corrupt file and if it is a little longer, for example 19 seconds, it generates a file that starts from second 8 const passThroughStream = new PassThrough(); const response = await new Promise((resolve, reject) => const command = ffmpeg() .input(`$import.meta.env.BUCKET_URL$m3u8S3`) .inputOptions([`-ss $TIME_OFFSET`]) .outputOptions([`-t $end - start`, '-c:v libvpx', '-c:a libvorbis', '-f webm']) .on('start', (commandLine) => (...)
• 05:53
  The hardware decoding was successful, but the hw_frames_ctx in the received frame is empty - mercuric taylor Newest 'ffmpeg' Questions - Stack Overflow
  I tried to use QSV hardware decoding under ffmpeg, using the integrated graphics 730 on my computer. Here's the code I used to initialize the decoder const AVCodec* codec = NULL; int ret; int err = 0; // Create the QSV hardware device. ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV, "auto", NULL, 0); if (ret < 0) char error_string[AV_ERROR_MAX_STRING_SIZE]; av_make_error_string(error_string, AV_ERROR_MAX_STRING_SIZE, ret); LError("Error creating QSV device: ", error_string); return NULL; // (...)
• 03:19
  FFMPEG udp stream to VLC - leo_dragons Newest 'ffmpeg' Questions - Stack Overflow
  i've been trying to create a transport stream using FFMPEG, when i tried it in VLC it was working immediately, however when i stream from FFMPEG to VLC i can't get it to work, here's my string: ffmpeg -re -i http://ip-of-shoutcast-stream:port?listen -c:a aac -b:a 128k -ar 44100 -ac 2 -vn -f mpegts udp://ip-of-destination-pc:1234?pkt_size=1316 In VLC i use the same network source i used when VLC was streaming in the main PC: udp://ip-of-main-pc:1234 But it doesn't play or show any errors, the orange bar only goes back and (...)
• 03:21
  Unable to capture FFMPEG UDP stream using VLC - Luis H Cabrejo Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFMPEG to convert to stream to UDP local network but not able unless I define pkt_size ffmpeg -re -i test.mp4 -f mpegts udp://127.0.0.1:23000?pkt_size=1316 Is there a way or work around to omit that option? I have an device encoder aplication without pkt_size option. So only if pkt_size is defined (and equal) VLC is able to capture. I want VLC to work this way if possible ffmpeg -re -i test.mp4 -f mpegts udp://127.0.0.1:23000 (...)
• 00:51
  ffmpeg - very slow conversion - karoluch Newest 'ffmpeg' Questions - Stack Overflow
  I create web app in JavaEE which displays many video formats. I use ffmpeg solution to convert videos to formats which is supported natively by main browsers. According to : http://www.jwplayer.com/html5/formats/ I convert to WEBM container (VP8/VORBIS or VP9/OPUS). But conversion is very slow, bit rate equals to ~ 200kbits/s. To convert I execute following command ffmpeg -i file.mov -c:v libvpx -preset ultrafast result.webm How to speed up conversion to natively supported formats by main (...) -- http://www.jwplayer.com/html5/formats/

10 juin

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

• 17:29
  How to recover video from H264 frames and timestamps [closed] - kokosda Newest 'ffmpeg' Questions - Stack Overflow
  My service receives H264 frames and some metadata related to them like Timestamp from MS Teams. Observations: Those frames are inter-frame compressed. Resolution of those frames can change. Timestamps are like this one 39264692280552704. That represents year 125 if fed to .NET consturctor new DateTime(39264692280552704), so I need to add 1899 years to get a real date. I can wrap the sequence to a playable mp4 container with ffmpeg -i input.h264 -c copy output.mp4, however it is not what I want because the resulting video plays too fast, like on fast forward. (...)
• 15:49
  fmpeg piped output is always providing an empty frame - sar5050 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to capture a webcam using the ffmpeg command in a Python script and process the frame for my work. For my work, I need to capture and forward through the pipe to my function, but I always get an empty frame. I tried many SO solutions, but they are not helping. ffmpeg_command = 'ffmpeg -f v4l2 -framerate 25 -video_size 960x540 -pix_fmt yuyv422 -i /dev/video0 \\ -f rawvideo \\ -pix_fmt yuyv422 \\ pipe:' pro = subprocess.Popen(ffmpeg_command.split(),stdout=subprocess.PIPE,shell=True) while True: raw_frame = (...)
• 16:13
  ffmpeg drawtext on ubuntu : ffmpeg does not change text location [closed] - Wolf Wolf Newest 'ffmpeg' Questions - Stack Overflow
  I am designing a video editor bot for Telegram. I want to use ffmpeg and I need a text to be placed on the video and change the place of the text randomly every few seconds. There is an example on the site itself. I used the following command: ffmpeg -i "/home/editor/downloads/video_2023-07-10_17-53-05_7375753324605210932.mp4" -filter:v drawtext="fontsize=30:fontfile=/usr/share/hellotext=hellotext/share/World': x=if(eq(mod(t\\,30)\\,0)\\,rand(0\\,(w-text_w))\\,x):y=if(eq(mod (t\\,30 )\\, 0)\\,rand(0\\,(h-text_h))\\,y)" -codec:v libx264 -codec:a (...) -- There is an example on the site itself.
• 16:26
  How to access windows enviroment variables on MSYS? - Mostafa Sataki Newest 'ffmpeg' Questions - Stack Overflow
  I want to build ffmpeg by vs2015 from msys2. In the first add vs2015\\vc\\bin\\amd64 in to path enviroment in windows. Run "vs2015 x64 command prompt" as administrator then run vcvarsall.bat amd64. In the final go to "msys" path and then run "msys2_shell.cmd". I use "which cl" command for localize cl.exe. Output: which: no cl in (/usr/local/bin:/usr/bin:/bin:/opt/bin:/c/Windows/System32:/c/Windows:/c/Windows/System32/Wbem:/c/Windows/System32/WindowsPowerShell/v1.0/) How to access to windows enviroments in (...)
• 16:14
  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", (...)
• 13:01
  FFmpeg/DASH: duration or timestamp out of range for mov/mp4 format - mike Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert a aac stream to dash. The issue is that I get a lot of errors as below(though it seems to segment it into multiple files but I get errors on the player too). The question is why do I get these errors and how can I fix it? If I simply convert "copy" it into to a single mp4 file it works without error. ffmpeg -i "a.mkv" -y -map 0:1 -c:0 copy -min_seg_duration 1000000 -use_timeline 1 -use_template 1 -init_seg_name init.mp4s -media_seg_name "\\$Number\\$.mp4s" -adaptation_sets "id=1,streams=0" -remove_at_exit 0 -f dash -dash 1 (...)
• 13:56
  How to get real-time information from ffmpeg-python process? - duruburak Newest 'ffmpeg' Questions - Stack Overflow
  I've seen some people achieving to scrape out live progress data from ffmpeg subprocess. But for non-command line execution, how could this be accomplished? For example I want to store this real-time information on the command line output line by line or get the progress percentage to the completion. import ffmpeg import threading def ffmpeg_func(path1, path2, path3): global out, err video_part = ffmpeg.input(path1) audio_part = ffmpeg.input(path2) ffm = ffmpeg.output(audio_part, video_part, (...) --
• 12:24
  How can I add ffmpeg file or directory in aws lambda functions? - Vipul Kavar Newest 'ffmpeg' Questions - Stack Overflow
  I am encountering an error when running a Lambda function that merges audio chunks into a single audio file using Python 3.10. The error message is: No such file or directory: 'ffmpeg' def create_combined_audio_from_chunks(sorted_objects_key_list): # Create an empty AudioSegment object to hold the combined audio combined_audio = AudioSegment.empty() for key in sorted_objects_key_list: try: file_content = get_s3_object_content(object_key=key) with tempfile.NamedTemporaryFile(delete=True) as temp_file:  (...)
• 05:02
  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: (...) -- as I understood from what was written here

9 juin

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

• 22:46
  ffmpeg does not exit when pipe is closed? - Thomas Newest 'ffmpeg' Questions - Stack Overflow
  If this has already been brought up, I apologize. This is part of a software tuner package I am writing as a POC. It is used by Plex Media Server. For the most part, it works with good picture quality but leaves ffmpeg processes when the User clicks "Stop" or closes the browser, I assume plex is closing the socket and that ffmpeg is not erroring out, but I am not sure. this is part of a function where I pass in a TCP Client Network Stream. TCPListener waits for a call, when it accepts one, it passes the network stream off to this function below. When the TCP Client disconnects, (...)
• 21:46
  Inappropriate ioctl for device in zoneminder - zmc_dvideo0 - Adam Newest 'ffmpeg' Questions - Stack Overflow
  I recently needed to rebuild my zoneminder local camera system, running on an RPi. I switched OS from Debian to Ubuntu and now I'm struggling to get video4linux to decode the video input. The result is either a black or green screen depending on the compression palette I select. I'm using /dev/video0 as my input. v4l2-ctl --list-devices unicam (platform:fe801000.csi): /dev/video0 /dev/media3 In the logs I'm getting: zmc_dvideo0 10907 ERR Unable to query control: Inappropriate ioctl for device I don't understand the (...)
• 20:25
  TypeError: source must be an AudioSource not FFmpegOpusAudio - salice Newest 'ffmpeg' Questions - Stack Overflow
  async def play(ctx, *, link): try: voice_client = await ctx.author.voice.channel.connect() voice_clients[voice_client.guild.id] = voice_client except Exception as e: print(e) if 1==1: if youtube_base_url not in link: query_string = urllib.parse.urlencode( 'search_query': link ) content = urllib.request.urlopen( youtube_results_url + query_string ) search_results = re.findall(r'/watch\\?v=(.11)', content.read().decode()) link = youtube_watch_url + (...)
• 13:23
  Whisper openAI with colab : error message [duplicate] - user35117 Newest 'ffmpeg' Questions - Stack Overflow
  Up to now, i succeed in using Whisper with Colab (with GPU execution and model v3 ) without error message. But today, i'm facing to an error message. Firstly i execute successfully these 2 following commands : !pip install git+https://github.com/openai/whisper.git !sudo apt update && sudo apt install ffmpeg Then, when i execute this third following command : !whisper "88_89_90_91_103_104_105_106_100.mp3" --model large-v3 I obtain an error message. Please find below the whole error message : Do you know where the probleme would be (...)
• 13:27
  Error audio loading when runing Whisper Open AI model - John mick Newest 'ffmpeg' Questions - Stack Overflow
  The problem I'm trying to solve is that I can't run Whisper model for some audio, it says something related to audio decoding. payload.wav: Invalid data found when processing input. raise RuntimeError(f"Failed to load audio: e.stderr.decode()") from e I tried using the micro-machines.wav and it works fine but when i used other audio it gives me an error. import whisper model = whisper.load_model("base") text=model.transcribe('micro-machines.wav',fp16=False) print(text) text=model.transcribe('payload.wav',fp16=False) p -- It appears that the code failed to load the audio file for some reason and even failed to display that error because e.stderr did not contain a valid UTF-8 string
• 08:02
  Use specific channels from specific streams for the final stream using FFMPEG [closed] - Kazu-kun Newest 'ffmpeg' Questions - Stack Overflow
  I want to create a 5.1ch audio stream from a 2ch audio stream. However I want to put a negative delay to LFE, SL and SR channels since they will be played from my bluetooth speaker, so I want to make up for the delay by giving it a negative delay. ffmpeg -itsoffset 0.1 -i input.mkv -i input.mkv \\ filter_complex “\\ [1:a]pan=5.1(side)|FL=FL|FR=FR|LFE [0:a]pan=5.1(side)|FL=FL|FR=FR|LFE [orig5_1][delayed5_1]amerge=inputs=2,pan=5.1(side)|FL=c6|FR=c7|LFE=c2|SL=c3|SR=c4[a]” \\ map "[a]" -map 0:v -map 0:s -c:v copy -c:a flac -c:s copy output.mkv I tried (...)
• 09:08
  FFMpeg in C# with streams - oLaDushek Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to crop mp3 using FFMpeg. I need to use streams for both input and output data. At the moment, I'm trying to use the stream at least only for input data. var inputFile = ⓐ"D:\\TestInput.mp3"; var process = new Process StartInfo = new ProcessStartInfo FileName = ⓐ"path\\to\\ffmpeg.exe", Arguments = "-i - -vn -acodec copy -ss 00:00:00 -t 00:00:30 -y D:\\\\TestFFMpeg.mp3", RedirectStandardInput = true, UseShellExecute = false , EnableRaisingEvents = true ; process.Start(); using (var (...)

8 juin

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

• 22:48
  Can I use HTTP/2.0 for downloading HLS streams using FFmpeg? - SpongeBed Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to download an HLS stream using FFmpeg. However, FFmpeg defaults to HTTP/1.1 for downloading content, and the video source's firewall blocks HTTP/1.1 connections. Consequently, FFmpeg cannot download the video. I used the same headers as my browser to access the content and replicated the request using Insomnia. And again, my request was blocked when using HTTP/1.1. I've searched everywhere but haven't found any information on how to change the HTTP version FFmpeg uses for requests. Is there a way to configure FFmpeg to use HTTP/2.0 instead of (...)
• 22:30
  Looking for a better cutting command in FFmpeg - Mohammad Mansour Newest 'ffmpeg' Questions - Stack Overflow
  This is the original command, it removes the part between the start and end which will be specified in command ffmpeg -i input.ext -vf "select='not(between(t,start,end))', setpts=N/FRAME_RATE/TB" -af "aselect='not(between(t,start,end))', asetpts=N/SR/TB" output.ext is there better options that doesn't re-encode? or atleast is faster?. keep in mind I am want the command to remove the part between the start and end not return it so this for example ins't what I am looking for: ffmpeg -ss start -i input.mp4 -c copy -t end (...)
• 11:57
  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