19 juin

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

• 16:06
  How to render a frame to a screen window via D3D11 - mercuric taylor Newest 'ffmpeg' Questions - Stack Overflow
  I have successfully decoded a video using FFmpeg with the AV_HWDEVICE_TYPE_D3D11VA decoder, and I currently have a AVFrame on the GPU. To render this frame, my approach includes the following steps: 1.I created a D3D class. Besides the basic initialization (device, context, viewport), the core part is texture. To directly copy the frame on the GPU to the shared texture, I have the following two functions. void D3D::InitScence(ID3D11Device* device, UINT width, UINT height) D3D11_TEXTURE2D_DESC tdesc = ; tdesc.Width = width; tdesc.Height = height;  (...)
• 15:58
  How to extract audio from a video in flutter? - Mohammed Bekele Newest 'ffmpeg' Questions - Stack Overflow
  I have an image picker in flutter ro get the video from the device. and then i created a function to extract the audio using ffmpeg_kit_flutter package. Future _convertVideoToAudio() async if (_pickedVideo != null) bool? permissionGranted = await _requestStoragePermission(); if (permissionGranted != true) print("Storage permission denied."); return; String videoPath = _pickedVideo!.path; _outputPath = await getOutputFilePath(); // Get platform-specific path try // Ensure the output directory exists await (...)
• 15:36
  Previewing mp4 video of cv2s VideoWriter not possible - JanSkn Newest 'ffmpeg' Questions - Stack Overflow
  I am writing a machine learning football analysis system, and I want to store the result video as seen in the code block. I can see the video normally under Windows' media player, but in VSCode and Streamlit, I can't open/show the video. Edit: On Mac, it works perfectly well. def save_video(frames: List[np.ndarray], path: str, fps: int=24) -> None: fourcc = cv2.VideoWriter_fourcc(*"avc1") # codec for compressing the video out = cv2.VideoWriter(filename=path, fourcc=fourcc, fps=fps, frameSize=(frames[0].shape[1], frames[0].shape[0])) for frame in (...)
• 15:04
  FFmpeg Compilation - Igor Newest 'ffmpeg' Questions - Stack Overflow
  I use the latest BtbN script to build shared FFmpeg in Ubuntu. I removed many .sh files in /scripts.d/ directory with unused libs for my app to build a tiny (compact) FFmpeg. However it ignores my changes and build a heavy FFmpeg as with all default libs included in gpl-shared variant.
• 11:16
  ffmpeg auto scaling problem - Picture width must be an integer multiple of the specified chroma subsampling [closed] - kali Newest 'ffmpeg' Questions - Stack Overflow
  Apparently one of my input files have a wonky aspect ratio and it lands on a "non - integer" auto scaled width. which produces an error message about chroma multiples (naturally) ffmpeg -i "1.mp4" -vf "scale=-1:1920" -c:v libx265 -c:a aac -preset slow -x265-params "crf=22:min-keyint=25:keyint=50" "2.mp4" ffmpeg version 4.4-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2021 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio (...)
• 02:08
  the "non-monotonic DTS in output stream " error while concatenation even after reencoded input files - nish Newest 'ffmpeg' Questions - Stack Overflow
  hi I am trying to write a Python program that is trying to first edit different videos separately under the heading "intro" "story" and "byte" with the help of FFmpeg and Python subprocess module and then concatenate them in the function named "bind". At first, I encountered this "Non-monotonic DTS in output stream" then i reencoded the input files before concatenating them but i am still getting this error # function to assemble all the videos def bind(): bunch = ["final_intro.mp4","final_story.mp4","finalbite.mp4"] new_bunch =[] for video in bunch: name = (...)
• 01:29
  ffmpeg runs in terminal but returns error in subprocess.run from flatpak-installed pycharm - name Newest 'ffmpeg' Questions - Stack Overflow
  I want to run this command in python: ffmpeg -ss 00:00:30 -i "/home/exl/—1—ARCHIVE—1—/video/music videos/author --- a2 - name (text).webm" -vf scale=150:-2 -vframes 1 -c:v libwebp -compression_level 6 -quality 100 /home/exl/—1—ARCHIVE—1—/—3—previews—3—/734a8a0bac3a83e0f6c69416a26ec5cd211a6d742f3df63bb72bdbe6431b57c30677bc11551ba4aaaecac15ed2c48de51340a09020b7e9d9479e1e81ff766191.webp In terminal it works fine, but in subprocess returns error. Python code: finished_process = subprocess.run( [ '/usr/bin/ffmpeg', '-ss', (...)

18 juin

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

• 20:09
  FFMpeg gets stuck while using c# but not shell - Internal Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a C# project where I need to run FFmpeg commands to process videos. The FFmpeg command works perfectly fine when executed directly in the shell, but it hangs when run from my C# application. I suspect the issue is related to the output pipes getting full. Here is the FFmpeg command I'm using: shell C:\\path\\to\\ffmpeg.exe -f concat -safe 0 -i "C:\\path\\to\\list.txt" -vf "scale=1080x1920,setsar=1" -c:v libx264 -pix_fmt yuv420p -c:a aac -ar 44100 -ac 2 "C:\\path\\to\\output.mp4" And here is my C# code: private static async Task (...)
• 15:51
  Couldn't find ffmpeg or avconv - Python - goldie Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a captcha solver and I need to use ffmpeg, though nothing works. Windows 10 user. Warning when running the code for the first time: C:\\Users\\user\\AppData\\Roaming\\Python\\Python310\\site-packages\\pydub\\utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning) Then, when I tried running the script anyway and it required ffprobe, I got the following (...)
• 15:51
  ffmpeg status & quality / cuda (CPU/GPU) - cocco Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg am I doing it right? So much time has passed since I use ffmpeg to convert clips on my home web server, now that mp4 (h264 & aac) is the current overall standard (works on every console, smartphone, smartTV, pc) I decided to convert my old clips from various digital cameras to to this new container/codecs. less space & the same quality. compatibility support for tags (subler for mac) after some research I opted for ffmpeg because of various reasons commandline (I made my simple web interface with default settings which I execute with (...) -- http://www.nvidia.com/object/cuda_home_new.html, http://www.nvidia.com/object/cuda_home_new.html#sthash.dEYaqae7.dpuf, http://www.geforce.com/games-applications/pc-applications/badaboom-media-converter
• 15:05
  Unable to identify syntax required to rename files in MacOS Terminal [closed] - Ben C Newest 'ffmpeg' Questions - Stack Overflow
  This is a head scratcher. I need to move these three oddly-named files from an external 2.5" SSD to my desktop. The file names were intended to have variables replaced by date info, however, clearly it didn't work. So I'm left with these filenames that MacOS seems to want to interpret rather than treat as a string. I wish it was as easy as tossing in single quotes or escaping chars, but so far, that hasn't worked. Files: Test01-$(internal:date_y)-$(internal:date_m)-$(internal:date_d)-.mp4 Test01-$(internal:date_y)-$(internal:date_m)-$(internal:date_d)-0001.mp4 (...)
• 12:35
  How to limit cpu usage for a terminal command that works on m1 mac and macOS Monterey? - mcaay Newest 'ffmpeg' Questions - Stack Overflow
  I have a m1 macbook pro and I regularly need to do some heave processing with ffmpeg. When I do it, all my 8 cores go at it 100% and my cpu temperature goes to 92°C, which I don't feel comfortable about. I don't really need 100% speed, I'd much rather see 80°C and wait 5x longer for it to finish. I use Macs Fan Control which sets my fan at 100% at 75°C, so this helps definitely, but is not enough. I tried ffmpeg -threads 1 parameter but it doesn't make a difference in compressing speed nor temperature, so I assume it just doesn't (...)
• 05:16
  What is the best way to split videos into equally sized parts using ffmpeg? [closed] - GBPU Newest 'ffmpeg' Questions - Stack Overflow
  I have tried to split an mp4 file into smaller parts of equal time length like this ffmpeg -i ../data/2024-06-02_12-34-51.mp4 -c copy -map 0 -segment_time 00:00:05 -f segment v1_%03d.mp4. However, this produced videos of highly variables size, some 25x larger than others. I assume this was due to inconsistent framerate during recording. Next, I tried a script that would split based and limit each part to a specific size: #!/bin/sh # Short script to split videos by filesize using ffmpeg by LukeLR if [ $# -ne 3 ]; then echo 'Illegal number of parameters. (...)
• 10:35
  How to accurately detect the start of the main beat and soundtracks in diverse audio tracks? - SnoofFloof Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a project where I need to edit soundtracks. The challenge is to detect when the main beat and melody of any given soundtrack is properly developed. I am certain there is better terminology to describe what I am aiming for, but ideally, I want to skip the "build-up" and immediately have the song starting at the "main part". This needs to work for various songs across different genres, which often have different structures and onset patterns, making it difficult to streamline the process. For example: https://www.youtube.com/watch?v=P77CNtHrnmI -> I would want (...) -- https://www.youtube.com/watch?v=P77CNtHrnmI, https://www.youtube.com/watch?v=OOsPCR8SyRo, https://www.youtube.com/watch?v=XKiZBlelIzc
• 08:14
  How to install latest ffmpeg on mac - Bachalo Newest 'ffmpeg' Questions - Stack Overflow
  I am using this command sudo port install ffmpeg +gpl +postproc +lame +theora +libogg +vorbis +xvid +x264 +a52 +faac +faad +dts +nonfree But the installed version of ffmpeg I get is only 0.7.13. I am using MacPorts which may be the issue Apparently there is a 1.0 release! http://ffmpeg.org/download.html#release_1.0 -- http://ffmpeg.org/download.html#release_1.0
• 06:57
  How does chromium apk load external lib-ffmpeg? - weixiong wan Newest 'ffmpeg' Questions - Stack Overflow
  Is there a way to make chromium APks that do not contain libffmpeg and only load external libffmpeg at runtime? I tried unpacking, unpacking, and signing the TrichromeLibrary.apk with apktool, but the trichromelibrary.apk didn't install to the board.
• 02:03
  How to mix 2 audio files into one in ffmpeg-go? - princessluna Newest 'ffmpeg' Questions - Stack Overflow
  Using ffmpeg-go, I am trying to trim and mix (overlay) two audio files together. Currently I have this code: func AssebmleAudio(music, effect string, userId int) outputFilePath := filepath.Join(utils.GetRoot(), "users", fmt.Sprintf("%d", userId), "audio.mp3") musicStream := Trim(ffmpeg_go.Input(music), 60) effectStream := Trim(ffmpeg_go.Input(effect), 60) Mix(musicStream, effectStream).Output(outputFilePath).Run() // Mixes specified user audio and vinyl audio asset func Mix(music, effect *ffmpeg_go.Stream) *ffmpeg_go.Stream  (...)

17 juin

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

• 21:06
  Interpolate 30 to 60fps like television [closed] - Henrique Newest 'ffmpeg' Questions - Stack Overflow
  I would like to interpolate the frames from 29,970 to 59,940 (or 60) like television does. I've used methods like Flowframes, but I'd like it to be more similar to how it is on television, where they mix the lines for smoother movement. Any method in FFmpeg? I tried to use some commands in FFPMEG that I found on the Internet.
• 23:46
  Cannot read property 'isStream' of undefined with fluent-ffmpeg - Dario Rusignuolo Newest 'ffmpeg' Questions - Stack Overflow
  I have these lines of code s3.getObject(getParams, function (err, response) ffmpeg(response.Body) .size('640x360') .videoFilter( filter: 'scale', options: [640, -1] ) // .seekInput('3:00') .duration('0:08') .format('mp4') .on('error', function (err) console.error(err, 'invalid ffmpeg conversion') ) .on('start', function (start) console.log(start, 'starting'); ) .on('progress', function (any) console.log(any, (...)
• 23:48
  How to correctly pass FFMPEG arguments using PYTHON? [duplicate] - Kaj Ervo Newest 'ffmpeg' Questions - Stack Overflow
  I wrote script to create a hardcoded overlay onto a video from a .txt data file using this command syntax: ffmpeg -i 'input.mp4' -vf "ass='subfile.ass'" -c:v h264_qsv 'output.mp4' If I do this, it works fine (please note there are no white spaces in path): import subprocess ffmpeg_loc = 'c:/ffmpeg/bin/ffmpeg' video = 'c:/temp/UTP20/v.mp4' assfile = 'c:/temp/UTP20/v.ass' output = 'c:/temp/UTP20/r.mp4' assfile = assfile.replace(':', '\\\\\\\\:') #escaping colon for (...)
• 18:28
  Why does the VoiceNext D#+ library not work (not playing audio), despite not throwing any errors? - Overo3 Newest 'ffmpeg' Questions - Stack Overflow
  Using the DSharpPlus library, with conversion via ffmpeg, I have taken a YouTube video stream and converted it to PCM Stereo (the expected format), but when copying the stream to the buffer, no audio can be heard in the voice channel. Code for MusicCommands.cs: using System.ComponentModel.DataAnnotations.Schema; using System.Threading.Channels; using DSharpPlus; using DSharpPlus.Entities; using DSharpPlus.SlashCommands; using DSharpPlus.SlashCommands.Attributes; using DSharpPlus.VoiceNext; using System.Diagnostics; using (...)
• 15:24
  How to overlay a logo on a video every 60 seconds using ffmpeg? - Wolf Wolf Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to overlay a logo on a video every 60 seconds for a duration of 5 seconds using ffmpeg. Here's the command I am using: ffmpeg -i input.mp4 -i logo.png -filter_complex "[0:v]setpts=PTS-STARTPTS[v0];[1:v]loop=-1:size=1:start=0,setpts=N/(FRAME_RATE*TB)[logo];[v0][logo]overlay=enable='mod(t,60) However, I am encountering the following error: [overlay ⓐ 000002199e0b3f00] [Eval ⓐ 000000f94f9feff0] Invalid chars ' I want the logo to appear every 60 seconds for 5 seconds at the bottom-right corner of the video. The input video and logo (...)
• 03:52
  Why am I not able to store the HLS file in the path that is mounted to AWS S3 while converting using ffmpeg? [closed] - Arjit Newest 'ffmpeg' Questions - Stack Overflow
  why am I not able to store HLS file to the path which is mounted to AWS S3 while converting a RTMP stream using FFMPEG? It's work when the path is non-mounted. Actually I m using NGINX-RTMP to run a rtmp server & I want it in the form of HLS thats why the RTMP block look like this: rtmp server listen 1935; chunk_size 4096; # allow publish 127.0.0.1; allow publish all; # deny publish all; application live live on; record off; hls on; hls_path /tmp/hls; hls_fragment 10s; hls_playlist_length 5m;  (...)

16 juin

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

• 18:05
  FFmpeg probe gives me a NumberFormatException [closed] - Daydreamer067 Newest 'ffmpeg' Questions - Stack Overflow
  My code is : FFprobe ffprobe = new FFprobe("pathTo/ffprobe.exe"); FFmpegProbeResult probeResult = new FFmpegProbeResult(); probeResult = ffprobe.probe(fichierTemp.getPath()); I have this error on some video files : com.google.gson.JsonSyntaxException: java.lang.NumberFormatException: Expected an int but was 109893054318340751 at line 160 column 37 path $.chapters[0].id Can you help me please ? Thank you
• 15:31
  JavaFX: ffmpeg process finishes writing the file only after closing the program - The Engineer Newest 'ffmpeg' Questions - Stack Overflow
  My JavaFX application uses ffmpeg to extract the first frame from a video file. The ffmpeg command is run in a separate thread, and the process ends with a wait. However, despite the fact that the image is saved to a temporary directory (temp/video_preview.jpg ), it becomes available only after the forced termination of the entire program, and not immediately after the completion of the ffmpeg process. I need the image to be available for display in ImageView immediately after the ffmpeg process is completed. https://github.com/Memory420/GifConverter/tree/master I expected the (...) -- https://github.com/Memory420/GifConverter/tree/master
• 11:38
  Get fps using ffmpeg in java without ProcessBuilder or Runtime.getRuntime().exec() - Thor Newest 'ffmpeg' Questions - Stack Overflow
  I am working with ffmpeg_wrapper and I want to get frames per second(fps) of a video. The command which can be used to do it is: ffmpeg -i video.mp4 2>&1 | sed -n "s/.*, \\(.*\\) fps.*/\\1/p" which is giving me output: 24 But the issue is I was not able to find any way to do this as java code. Please note, I don't want to use ProcessBuilder or Runtime.getRuntime().exec(), as they would start an another process. I also had a usecase to capture the screenshot from the video for which I wrote this code: public void captureScreenshots(String videoPath, (...) -- ffmpeg_wrapper
• 10:46
  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
• 10:26
  How to mimic Audacity's "truncate silence" with ffmpeg "silenceremove" filter - Cara Duf Newest 'ffmpeg' Questions - Stack Overflow
  I want to remove completely silence parts from wav files with ffmpeg. Input wav can be like : I am using the following ffmpeg command to remove silence part ffmpeg -i input.wav -af silenceremove=stop_periods=-1:stop_duration=0.2:stop_threshold=-45dB output.wav because I understand from the doc that it will remove all silence parts longer than 0.2 s (silence being below -45dB). But I get that where silence part has only been reduced to around 0.1 wheras I want it to be 0 (no remaining silence). In Audacity I will use "truncate audio" filter and choose the above (...) -- , doc, , ,
• 05:20
  why i dont able to store hls file to the path which is mounted to aws s3 while converting using ffmpeg? - Arjit Newest 'ffmpeg' Questions - Stack Overflow
  why i dont able to store hls file to the path which is mounted to aws s3 while converting a rtmp stream using ffmpeg? It's work when the path is non mounted. Actually I m using nginx rtmp to run a rtmp server & I want it in the foem of hls thats why the rtmp block look like this: rtmp server listen 1935; chunk_size 4096; # allow publish 127.0.0.1; allow publish all; # deny publish all; application live live on; record off; hls on; hls_path /tmp/hls; hls_fragment 10s; hls_playlist_length 5m;  (...)

15 juin

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

• 22:59
  Oddly-named file "not found" when trying to move/copy via MacOS Terminal [closed] - Ben C Newest 'ffmpeg' Questions - Stack Overflow
  This is a head scratcher. I need to move these three oddly-named files from an external 2.5" SSD to my desktop. The file names were intended to have variables replaced by date info, however, clearly it didn't work. So I'm left with these filenames that MacOS seems to want to interpret rather than treat as a string. I wish it was as easy as tossing in single quotes or escaping chars, but so far, that hasn't worked. Files: Test01-$(internal:date_y)-$(internal:date_m)-$(internal:date_d)-.mp4 Test01-$(internal:date_y)-$(internal:date_m)-$(internal:date_d)-0001.mp4 (...)
• 16:05
  How can I remove every nth frame from raw video using ffmpeg? - DaveB44 Newest 'ffmpeg' Questions - Stack Overflow
  Question moved to SuperUser, please reply there I have many cine films that have been digitally converted. They have been converted as a 25 fps with 2 frames in every 23 duplicated. I need to remove the duplicated frames using a bitstream filter so there is no decoding/encoding. After removing the frames I will change to the original cine frame rate of 18 fps. I will then change the frame rate to 25 fps using duplicated frames. I don't want to interpolate as I want to preserve the jerky format of the cine. Finally I will video editing software that will do the final (...) -- bitstream filter setts
• 16:53
  FFmpeg Integration in .NET MAUI for Android [closed] - Billy Vanegas Newest 'ffmpeg' Questions - Stack Overflow
  I'm facing a challenge with integrating FFmpeg into my .NET MAUI project for Android. While everything works smoothly on Windows with Visual Studio 2022, I'm having a hard time replicating this on the Android platform. Despite exploring various NuGet packages like FFMpegCore, which appear to be wrappers around FFmpeg but don't include FFmpeg itself, I'm still at a loss. I've tried following the instructions for integrating ffmpeg-kit for Android, but I keep running into issues, resulting in repeated failures and growing confusion. It feels like there is no (...)
• 14:35
  Urgent Help Needed: FFmpeg Integration in .NET MAUI for Android [closed] - Billy Vanegas Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently facing a significant challenge with integrating FFmpeg into my .NET MAUI project for Android. While everything works smoothly on Windows with Visual Studio 2022, I'm having a hard time replicating this on the Android platform. Despite exploring various NuGet packages like FFMpegCore, which appear to be wrappers around FFmpeg but don't include FFmpeg itself, I'm still at a loss. I've tried following the instructions for integrating ffmpeg-kit for Android, but I keep running into issues, resulting in repeated failures and growing confusion. It (...)
• 02:00
  ffmpeg trouble with NetMaui and Android [closed] - 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 (...)
• 00:17
  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 (...) --
• 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: (...)