December 2024 - ffmpeg-user - lists.ffmpeg.org

Would it be possible to load xattr-related media-files like a container?
by Peter B. 02 Aug '25

02 Aug '25

Hi everyone :) I'm working a lot with extended attributes on filesystems, and I'm amazed! I was wondering if it would be possible for ffmpeg to load "related media-streams" as related objects: Having a 0-Byte "videofile.aha": * video = /path/to/my_movie.h264 * audio = ./my_movie-DE_AT.flac * audio.1 = my_movie-EN_GB.mp3 * video.default = video * audio.default = audio.1 * dc.title = "My Movie" * dc.creator = "..." * ... Like an input demuxer which resolves the related objects and treats this like loading a container? I imagine this to be quite fun (and useful actually). One could then drag-and-drop to remux tracks, and right-click-edit metadata, I imagine. Feedback greatly appreciated :) Have a great day! Peter

1 1

has setpts filter been changed?
by William C Bonner 21 Mar '25

21 Mar '25

I use setpts to speed up some video that I'm concatenating from my car's dashcam. The process is consistent and hasn't changed recently. Here's an example command line: C:\Windows\ffmpeg.exe -hide_banner -i D:\ROAV\MOVIE\2024_0803_173613_229.MP4 -i D:\ROAV\MOVIE\2024_0803_173713_230.MP4 -i D:\ROAV\MOVIE\2024_0803_173813_231.MP4 -i D:\ROAV\MOVIE\2024_0803_173913_232.MP4 -i D:\ROAV\MOVIE\2024_0803_174013_233.MP4 -i D:\ROAV\MOVIE\2024_0803_174113_234.MP4 -i D:\ROAV\MOVIE\2024_0803_174213_235.MP4 -i D:\ROAV\MOVIE\2024_0803_174313_236.MP4 -i D:\ROAV\MOVIE\2024_0803_174413_237.MP4 -i D:\ROAV\MOVIE\2024_0803_174513_238.MP4 -i D:\ROAV\MOVIE\2024_0803_174613_239.MP4 -i D:\ROAV\MOVIE\2024_0803_174713_240.MP4 -i D:\ROAV\MOVIE\2024_0803_174813_241.MP4 -i D:\ROAV\MOVIE\2024_0803_174913_242.MP4 -i D:\ROAV\MOVIE\2024_0803_175013_243.MP4 -i D:\ROAV\MOVIE\2024_0803_175113_244.MP4 -i D:\ROAV\MOVIE\2024_0803_175213_245.MP4 -i D:\ROAV\MOVIE\2024_0803_175313_246.MP4 -i D:\ROAV\MOVIE\2024_0803_175413_247.MP4 -i D:\ROAV\MOVIE\2024_0803_175513_248.MP4 -i D:\ROAV\MOVIE\2024_0803_175613_249.MP4 -i D:\ROAV\MOVIE\2024_0803_175713_250.MP4 -i D:\ROAV\MOVIE\2024_0803_175813_251.MP4 -i D:\ROAV\MOVIE\2024_0803_175913_252.MP4 -i D:\ROAV\MOVIE\2024_0803_180013_253.MP4 -i D:\ROAV\MOVIE\2024_0803_180113_254.MP4 -i D:\ROAV\MOVIE\2024_0803_180213_255.MP4 -filter_complex [0:v][1:v][2:v][3:v][4:v][5:v][6:v][7:v][8:v][9:v][10:v][11:v][12:v][13:v][14:v][15:v][16:v][17:v][18:v][19:v][20:v][21:v][22:v][23:v][24:v][25:v][26:v]concat=n=27:v=1[v];[v]setpts=(1/60)*PTS,drawtext=fontfile=C\\:/Windows/Fonts/consola.ttf:fontcolor=white:fontsize=80:y=main_h-text_h-50:x=50:text=WimsWorld[o] -map [o] -map_metadata -1 -c:v libx265 -crf 23 -preset veryfast -movflags +faststart -bf 2 -g 15 -pix_fmt yuv420p -n D:\ROAV\20240803-BMW.mp4 The important part is setpts=(1/60)*PTS which should convert 1 minute of the source video to 1 second in the destination I noticed that watching recent videos strangely seemed much smoother, then realized that they were also significantly larger. https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20… still says that using this method will drop frames, but when I ran ffprobe on the current file I got: C:\Users\Wim>ffprobe d:\ROAV\20240803-BMW.mp4 ffprobe version 2024-07-18-git-fa5a605542-full_build-www.gyan.dev Copyright (c) 2007-2024 the FFmpeg developers built with gcc 13.2.0 (Rev5, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint libavutil 59. 28.100 / 59. 28.100 libavcodec 61. 10.100 / 61. 10.100 libavformat 61. 5.101 / 61. 5.101 libavdevice 61. 2.100 / 61. 2.100 libavfilter 10. 2.102 / 10. 2.102 libswscale 8. 2.100 / 8. 2.100 libswresample 5. 2.100 / 5. 2.100 libpostproc 58. 2.100 / 58. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\ROAV\20240803-BMW.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf61.5.101 Duration: 00:00:27.07, start: 0.000000, bitrate: 889896 kb/s Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, progressive), 2560x1440, 889591 kb/s, 1800.04 fps, 1000k tbr, 1000k tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc61.10.100 libx265 Running it on an older file produced: C:\Users\Wim>ffprobe d:\ROAV\20240523-BMW.mp4 ffprobe version 2024-07-18-git-fa5a605542-full_build-www.gyan.dev Copyright (c) 2007-2024 the FFmpeg developers built with gcc 13.2.0 (Rev5, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint libavutil 59. 28.100 / 59. 28.100 libavcodec 61. 10.100 / 61. 10.100 libavformat 61. 5.101 / 61. 5.101 libavdevice 61. 2.100 / 61. 2.100 libavfilter 10. 2.102 / 10. 2.102 libswscale 8. 2.100 / 8. 2.100 libswresample 5. 2.100 / 5. 2.100 libpostproc 58. 2.100 / 58. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd:\ROAV\20240523-BMW.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf61.3.103 Duration: 00:09:40.88, start: 0.000000, bitrate: 26675 kb/s Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, progressive), 2560x1440, 26672 kb/s, 25 fps, 25 tbr, 12800 tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc61.5.104 libx265 The important difference is that the older file reports 2560x1440, 26672 kb/s, 25 fps, 25 tbr, 12800 tbn and the newer file reports 2560x1440, 889591 kb/s, 1800.04 fps, 1000k tbr, 1000k tbn. This seems that the new code speed up the reported fps without dropping any frames.

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ffv1_vulkan issues
by BuyMyMojo 01 Jan '25

01 Jan '25

I have been trying to get ffv1_vulkan to encode since it was first added. My machine is running Arch Linux, a 7800XT using Mesa drivers and at time of testing/writing "ffmpeg version N-118193-g5f38c82536" Currently when running a basic encode I get a hand full of errors: `ffmpeg -hwaccel vulkan -hwaccel_output_format vulkan -i x264-video.mp4 -c:v ffv1_vulkan test.avi` I get this output: ``` [ffv1_vulkan @ 0x5c6e5c559a80] format nv12 not supported [vost#0:0/ffv1_vulkan @ 0x5c6e5c5ca700] [enc:ffv1_vulkan @ 0x5c6e5c5565c0] Error while opening encoder - maybe incorrect parameters such as bit_rate, rate, width or height. [vf#0:0 @ 0x5c6e5c559e40] Error sending frames to consumers: Function not implemented [vf#0:0 @ 0x5c6e5c559e40] Task finished with error code: -38 (Function not implemented) [vf#0:0 @ 0x5c6e5c559e40] Terminating thread with return code -38 (Function not implemented) [vost#0:0/ffv1_vulkan @ 0x5c6e5c5ca700] [enc:ffv1_vulkan @ 0x5c6e5c5565c0] Could not open encoder before EOF [vost#0:0/ffv1_vulkan @ 0x5c6e5c5ca700] Task finished with error code: -22 (Invalid argument) [vost#0:0/ffv1_vulkan @ 0x5c6e5c5ca700] Terminating thread with return code -22 (Invalid argument) [out#0/avi @ 0x5c6e5c55aa40] Nothing was written into output file, because at least one of its streams received no packets. ``` if I try it as `ffmpeg -init_hw_device vulkan=vk:0 -filter_hw_device vk -i x264-video.mp4 -c:v ffv1_vulkan test.avi` then I get a second kind of error: ``` Impossible to convert between the formats supported by the filter 'Parsed_null_0' and the filter 'auto_scale_0' [vf#0:0 @ 0x58c7e1705d80] Error reinitializing filters! [vf#0:0 @ 0x58c7e1705d80] Task finished with error code: -38 (Function not implemented) [vf#0:0 @ 0x58c7e1705d80] Terminating thread with return code -38 (Function not implemented) [vost#0:0/ffv1_vulkan @ 0x58c7e16a8b80] [enc:ffv1_vulkan @ 0x58c7e17a8d00] Could not open encoder before EOF [vost#0:0/ffv1_vulkan @ 0x58c7e16a8b80] Task finished with error code: -22 (Invalid argument) [vost#0:0/ffv1_vulkan @ 0x58c7e16a8b80] Terminating thread with return code -22 (Invalid argument) [out#0/avi @ 0x58c7e16a7f40] Nothing was written into output file, because at least one of its streams received no packets. ``` if I use both `-init_hw_device vulkan=vk:0 -filter_hw_device vk` and `-hwaccel vulkan -hwaccel_output_format vulkan` together I get the first error again, and finally trying to add `-vf "hwmap=derive_device=vulkan"` I get this final error: ``` [Parsed_hwmap_0 @ 0x7ff2c8004c40] Failed to map frame: -38. [vf#0:0 @ 0x5d5327742040] Error while filtering: Function not implemented [vf#0:0 @ 0x5d5327742040] Task finished with error code: -38 (Function not implemented) [vf#0:0 @ 0x5d5327742040] Terminating thread with return code -38 (Function not implemented) [vost#0:0/ffv1_vulkan @ 0x5d53278b9440] [enc:ffv1_vulkan @ 0x5d53277ef2c0] Could not open encoder before EOF [vost#0:0/ffv1_vulkan @ 0x5d53278b9440] Task finished with error code: -22 (Invalid argument) [vost#0:0/ffv1_vulkan @ 0x5d53278b9440] Terminating thread with return code -22 (Invalid argument) [out#0/avi @ 0x5d53278f6fc0] Nothing was written into output file, because at least one of its streams received no packets. ``` Can I get some guidance on getting this to work, I am at a loss

3 2

Non-monotonic DTS errors, saving a live encode via mediaMTX
by Andrew Strachan 27 Dec '24

27 Dec '24

Hi, I am please looking for some advice. live encoding from a decklink card to MediaMTX (on windows) then using ffmpeg to save the live stream to file. I need to be able to independently stop and start the saving of the file, that's why I am using this setup. We are also going to send the live stream to a CDN, via another instance of ffmpeg. Here is my current command to encode; ffmpeg.exe -rtbufsize 2G -re -format_code Hp30 -f decklink -i 35:00000000:00230600 -framerate 30 -video_size 1920x1080 -pix_fmt uyvy422 -vcodec libx264 -preset veryfast -x264-params "keyint=120:min-keyint=120:scenecut=0" -tune stillimage -b:v 3000k -minrate 3000k -maxrate 3000k -bufsize 3000k -acodec aac -ac 2 -ar 48000 -b:a 128k -g 120 -f rtsp rtsp://localhost:8554/mystream then to save the file I am using this; ffmpeg -rtsp_transport tcp -fflags +igndts -copyts -i rtsp://localhost:8554/mystream -start_at_zero -c copy output.ts I don't have the time to re-encode the .ts - just we will do a -copy and change to .mp4 which will be the final output. I keep getting Non-monotonic DTS errors, which I could just ignore, but I think they are suggesting something is wrong. My test .ts files will play in VLC, but I don't think they are 'good enough'. both seeking and audio sync does not look right.

5 4

ERROR: libass >= 0.11.0 not found using pkg-config
by kozaick 26 Dec '24

26 Dec '24

Hello. I am trying to compile ffmpeg with libass included for windows in ubuntu container (docker). But I get an error when running the configure file. To check, I placed the following command in the test_pkg_config() method of the configure file. --- echo “Checking package: $pkg_version” pkg-config --exists --print-errors $pkg_version echo “pkg-config exit code: $?” --- And display like this. --- Checking package: libass >= 0.11.0 pkg-config exit code: 0 ERROR: libass >= 0.11.0 not found using pkg-config --- (pkg-config --exists --print-errors I ran “libass >= (0.11.0” but nothing was printed.) I also ran “ls /usr/local/x86_64-w64-mingw32/include/ass" --- ass.h ass_types.h --- and I got the result that found“ass.h”. Here is the command I ran for complie. --- libass git clone -b 0.17.3 https://github.com/libass/libass.git cd libass autoreconf -fiv ./configure --host=x86_64-w64-mingw32 --prefix=/usr/local/x86_64-w64-mingw32 CPPFLAGS="-I/usr/local/x86_64-w64-mingw32/include" LDFLAGS="-L/usr/local/x86_64-w64-mingw32/lib" --disable-shared make make install cd .. --- --- ffmpeg CPPFLAGS="-I/usr/local/x86_64-w64-mingw32/include" \ LDFLAGS="-L/usr/local/x86_64-w64-mingw32/lib" \ ./configure \ --prefix=/usr/local/x86_64-w64-mingw32 \ --cross-prefix=x86_64-w64-mingw32- \ --arch=x86_64 \ --target-os=mingw32 \ --enable-libvorbis \ --enable-libopus \ --enable-libmp3lame \ --enable-libvpx \ --enable-libwebp \ --enable-libass \ --enable-ffprobe \ --disable-ffplay --- Can someone please provide a solution to this problem?

4 5

Trying to compile ffmpeg 7.1
by David Niklas 24 Dec '24

24 Dec '24

Hello, I'm trying to compile the latest build of ffmpeg, 7.1 on Devuan (Debian bullseye) Linux. I'm running into some problems. I don't know what to put into the arch argument to configure. I thought, znver2 would be sufficient. But I just get "warning unknown architecture znver2" Is znver2 not supported or am I missing something? Also, I keep getting configure errors specifying that a library doesn't exist, but in reality the error is that stdbit.h cannot be found. Searching online isn't helping. Could you tell me where to find it? Thanks!

3 5

[INQUIRY] Report for bug, while using ffmpeg tool
by 오지우 24 Dec '24

24 Dec '24

Hello , I am Oh ji woo. This is Report for bug, while using ffmpeg tool. I am using ffmpeg tool for test Audio Implicit Signaling Option. While I am testing, Audio Channel 1~3 is working well. But, Audio Channel 4 ~ more is not working. ## ffmpeg version ./ffmpeg.exe -version ffmpeg version N-111004-g4893cbcaba-gb1c3d81e71+12 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 13.1.0 (Rev6, Built by MSYS2 project) ## below is ffmpeg command that I used ``` ./ffmpeg.exe -re -i shark.mp4 -c:v copy -c:a libfdk_aac -profile:a aac_he -signaling implicit -ac 4 -f flv rtmp://{IP_ADDRESS}/app/{YOUR_STREAM_KEY} ``` Attached file is log file for error. Could you check this issue ? Thank you for reading.

1 0

Pull out 10 frames, one frame at a time for 10% of the video
by Варзанов Дмитрий 23 Dec '24

23 Dec '24

Hello. My team ffmpeg -i FILE -c:v libwebp -lavfi '[0:v]fps=1/".(300/10).",split=2[v0][v1];[v0]scale=1056:594,boxblur=luma_radius=min(h\,w)/20:luma_power=1:chroma_radius=min(cw\,ch)/20:chroma_power=1[bg];[v1]scale=-1:594[pic];[bg][pic]overlay=(W-w)/2:(H-h)/2' -vsync vfr -start_number 0 img%d.webp) > /dev/null 2>&1 The whole team is what it is, I have one simple but very important question for me. The video duration is 300 seconds to pull 10 frames every 10% of the video duration. It is necessary to know in advance the duration that needs to be divided and get the time interval after which we pull out the frame. fps=1/".(300/10)." Is it possible to take a frame every 10% without setting the duration in advance?.. At the output, get 10 frames and do not execute the command in advance to get this very duration. It turns out to be expensive, you first need to find out the duration of the video, only after that it is possible to pull out 10 frames, every 10% I would really like to exclude 1 command, obviously not execute the command to find out the duration in seconds.

1 0

how
by Josh Mulligan 20 Dec '24

20 Dec '24

hi hello i am sorry for your troubles i am not a ffmpreg worker i use it to eddit my animations and file and save them properly i understand that this can be complicated but can i ask how did u get my email because i keep getting messages like this and i dont entirely remember giving concent to spread my email again not blaming u

2 1

When using the multi overlay filter, the memory usage becomes excessively high.
by ahqzy 18 Dec '24

18 Dec '24

Hi all, When stitching four 1080p videos, multi-threaded decoding is used, and a single thread writes to their respective buffersrc filters. During the process, it was observed that memory usage rapidly increases (memory usage remains normal when only decoding is performed, without calling av_buffersrc_write_frame and av_buffersink_get_frame). Additionally, even after calling av_buffersink_get_frame, the memory does not decrease, even when av_frame_unref is invoked. It appears that there is a fixed buffer in the filter chain that is not being cleared. How can this issue be resolved? The code is attached.

1 0