January 2025 - 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

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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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ffmpeg doesn't reconnect when capturing live connections
by arthurpeabody 16 Mar '25

16 Mar '25

It begins with: ffmpeg -i https://listen.wruu.org/stream -t 3720 -reconnect true -reconnect_streamed true -reconnect_on_network_error true -timelimit 3720 -loglevel warning wruu_JoeFrank-20250130-2100.mp3 ffmpeg version 7.1 Copyright (c) 2000-2024 the FFmpeg developers built with gcc 14.2.0 (GCC) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --docdir=/usr/doc/ffmpeg-7.1/html --mandir=/usr/man --disable-debug --enable-shared --disable-static --enable-gpl --enable-version3 --arch=x86_64 --disable-encoder=aac --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gnutls --enable-libass --enable-libbluray --enable-libcaca --enable-libcdio --enable-frei0r --enable-openal --enable-libopus --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libmp3lame --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libpulse --enable-libsmbclient --enable-libxml2 --enable-librsvg --enable-vulkan --enable-libdrm --enable-libaom --enable-libdav1d --enable-libshaderc --enable-gcrypt --enable-libplacebo --enable-lcms2 libavutil 59. 39.100 / 59. 39.100 libavcodec 61. 19.100 / 61. 19.100 libavformat 61. 7.100 / 61. 7.100 libavdevice 61. 3.100 / 61. 3.100 libavfilter 10. 4.100 / 10. 4.100 libswscale 8. 3.100 / 8. 3.100 libswresample 5. 3.100 / 5. 3.100 libpostproc 58. 3.100 / 58. 3.100 Splitting the commandline. Reading option '-i' ... matched as input url with argument 'https://listen.wruu.org/stream'. Reading option '-t' ... matched as option 't' (stop transcoding after specified duration) with argument '3720'. Reading option '-reconnect' ... matched as AVOption 'reconnect' with argument 'true'. Reading option '-reconnect_streamed' ... matched as AVOption 'reconnect_streamed' with argument 'true'. Reading option '-reconnect_on_network_error' ... matched as AVOption 'reconnect_on_network_error' with argument 'true'. Reading option '-timelimit' ... matched as option 'timelimit' (set max runtime in seconds in CPU user time) with argument '3720'. Reading option '-v' ... matched as option 'v' (set logging level) with argument '48'. Reading option 'wruu_JoeFrank-20250130-2100.mp3' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option timelimit (set max runtime in seconds in CPU user time) with argument 3720. Applying option v (set logging level) with argument 48. Successfully parsed a group of options. Parsing a group of options: input url https://listen.wruu.org/stream. Successfully parsed a group of options. Opening an input file: https://listen.wruu.org/stream. [AVFormatContext @ 0x36542540] Opening 'https://listen.wruu.org/stream' for reading [https @ 0x365388c0] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' size= 9984KiB time=00:10:48.15 bitrate= 126.2kbits/s speed=0.0019x [tcp @ 0x36542e00] Original list of addresses: [tcp @ 0x36542e00] Address 165.227.18.155 port 443 [tcp @ 0x36542e00] Interleaved list of addresses: [tcp @ 0x36542e00] Address 165.227.18.155 port 443 [tcp @ 0x36542e00] Starting connection attempt to 165.227.18.155 port 443 [tcp @ 0x36542e00] Successfully connected to 165.227.18.155 port 443 [https @ 0x365388c0] request: GET /stream HTTP/1.1 User-Agent: Lavf/61.7.100 Accept: */* Range: bytes=0- Connection: close Host: listen.wruu.org Icy-MetaData: 1 [mp3 @ 0x36542540] Format mp3 probed with size=4096 and score=51 [mp3 @ 0x36542540] Skipping 0 bytes of junk at 0. [mp3 @ 0x36542540] Before avformat_find_stream_info() pos: 0 bytes read:7569 seeks:0 nb_streams:1 [https @ 0x365388c0] Metadata update for StreamTitle: - WRUU-WRUU [mp3 @ 0x36542540] All info found [mp3 @ 0x36542540] After avformat_find_stream_info() pos: 31744 bytes read:32000 seeks:0 frames:50 Input #0, mp3, from 'https://listen.wruu.org/stream': Metadata: icy-br : 192 icy-channels : 2 icy-name : WRUU 2022 icy-pub : 1 icy-samplerate : 44100 StreamTitle : - WRUU-WRUU Duration: N/A, start: 0.000000, bitrate: 192 kb/s Stream #0:0, 50, 1/14112000: Audio: mp3 (mp3float), 44100 Hz, stereo, fltp, 192 kb/s Successfully opened the file. Parsing a group of options: output url wruu_JoeFrank-20250130-2100.mp3. Applying option t (stop transcoding after specified duration) with argument 3720. Successfully parsed a group of options. Opening an output file: wruu_JoeFrank-20250130-2100.mp3. [out#0/mp3 @ 0x36888b80] No explicit maps, mapping streams automatically... [aost#0:0/libmp3lame @ 0x36889c80] Created audio stream from input stream 0:0 [file @ 0x3689d1c0] Setting default whitelist 'file,crypto,data' Successfully opened the file. Stream mapping: Stream #0:0 -> #0:0 (mp3 (mp3float) -> mp3 (libmp3lame)) [aost#0:0/libmp3lame @ 0x36889c80] Starting thread... [af#0:0 @ 0x36546c00] Starting thread... [aist#0:0/mp3 @ 0x3655f340] [dec:mp3float @ 0x368786c0] Starting thread... [in#0/mp3 @ 0x36542280] Starting thread... Press [q] to stop, [?] for help detected 4 logical cores [graph_-1_in_0:0 @ 0x7fdb580022c0] Setting 'time_base' to value '1/44100' [graph_-1_in_0:0 @ 0x7fdb580022c0] Setting 'sample_rate' to value '44100' [graph_-1_in_0:0 @ 0x7fdb580022c0] Setting 'sample_fmt' to value 'fltp' [graph_-1_in_0:0 @ 0x7fdb580022c0] Setting 'channel_layout' to value 'stereo' [graph_-1_in_0:0 @ 0x7fdb580022c0] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:stereo [format_out_#0:0 @ 0x7fdb58002c80] Setting 'sample_fmts' to value 's32p|fltp|s16p' [format_out_#0:0 @ 0x7fdb58002c80] Setting 'sample_rates' to value '44100|48000|32000|22050|24000|16000|11025|12000|8000' [format_out_#0:0 @ 0x7fdb58002c80] Setting 'channel_layouts' to value 'mono|stereo' [AVFilterGraph @ 0x7fdb58001000] query_formats: 5 queried, 9 merged, 3 already done, 0 delayed Output #0, mp3, to 'wruu_JoeFrank-20250130-2100.mp3': Metadata: icy-br : 192 icy-channels : 2 icy-name : WRUU 2022 icy-pub : 1 icy-samplerate : 44100 StreamTitle : - WRUU-WRUU TSSE : Lavf61.7.100 Stream #0:0, 0, 1/44100: Audio: mp3, 44100 Hz, stereo, fltp, delay 1105 Metadata: encoder : Lavc61.19.100 libmp3lame [out#0/mp3 @ 0x36888b80] Starting thread... Then there are thousands of entries like this: out#0/mp3 @ 0x36888b80] sq: send 0 ts 0.0261224 [out#0/mp3 @ 0x36888b80] sq: receive 0 ts 0.0261224 queue head -1 ts N/A [out#0/mp3 @ 0x36888b80] sq: send 0 ts 0.0522449 [out#0/mp3 @ 0x36888b80] sq: receive 0 ts 0.0522449 queue head -1 ts N/A [out#0/mp3 @ 0x36888b80] sq: send 0 ts 0.0783673 Then thousands that look like this: size= 54272KiB time=00:58:02.98 bitrate= 127.6kbits/s speed=0.679x No error is reported. ffmpeg is still running after its specified time.

2 1

Issue with Delayed Packet Writing to MP4 Container Using Hardware Encoder (h264_v4l2m2m) in FFmpeg API
by Lisa 05 Mar '25

05 Mar '25

Hello. I am trying to store the encoded packets to a mp4 container file using av_interlenced_write_packet() ffmpeg api. With Hardware encoder[h264_v4l2m2m] there is an issue when I add 1 second delay to write encoded Packets to the mp4 container. While writing the packets there are no errors but the encoded video is not playing.When verified with *mediainfo* CLI, got some partial metadata about the video. NOTE: Without delay there is no issue with recorded video. - *Mediainfo output of video without delay* [image: mediainfo_of_no_delay.png] - *Mediainfo output of video with delay* [image: mediainfo_of_with_delay.png] The flow of my code is as described in the text and illustrated in the flow diagram. ... ->send packet to encode ->Receive packet ->then clone the packet with av_packet_clone(sourcePacket) ->modified the pts & dts and ->writing frames to disk using av_interleaved_write_frame <https://www.ffmpeg.org/doxygen/4.0/group__lavf__encoding.html#ga37352ed2c63…> (AVFormatContext <https://www.ffmpeg.org/doxygen/4.0/structAVFormatContext.html> *s <https://www.ffmpeg.org/doxygen/4.0/llviddspenc_8c.html#a517a4433fe5466cc6af…> , AVPacket <https://www.ffmpeg.org/doxygen/4.0/structAVPacket.html> *pkt <https://www.ffmpeg.org/doxygen/4.0/demuxing__decoding_8c.html#a3d4c6562f0b2…> ) ... [image: ffmpeg.png] 1. Why is the issue occurring with a delay of about 1 second? 2. How can this issue be resolved?

1 1

convert mkv to mp4
by KoSza 16 Feb '25

16 Feb '25

Hi, I would like to convert mkv to mp4, because my LG does play only mp4 in DolbyVision. I would like to keep all subtitles, all audio tracks, I just ony want to change container, and don't want to modify anything. I have ffmpeg on my Synology DS423+, if I use the following command ffmpeg -i movie.mkv -codec copy movie.mp4 The file is done, but TV does not play it. If I try ffmpeg -i movie.mkv -map 0 -c copy movie.mp4 I got an error. If I use my XMedia Recode software, it works well, but I have to use my computer. I don't want to do that always. What is the right process to changing only the container and keep everything unchanged? Thank you

5 31

libavcodec/libsvtav1.c:438:70: error: too many arguments to function call, expected 2, have 3
by 桃源老師 01 Feb '25

01 Feb '25

Hello ffmpeg experts, I'm building ffmpeg(current git head) but get the following error, and then can't step up next... libavcodec/libsvtav1.c:438:70: error: too many arguments to function call, expected 2, have 3 438 | svt_ret = svt_av1_enc_init_handle(&svt_enc->svt_handle, svt_enc, &svt_enc->enc_params); my configuration option of ffmpeg: ./configure --prefix=${TARGET} --pkg-config-flags=--static --enable-gpl --enable-version3 --enable-nonfree \ --enable-libmp3lame --enable-libfdk-aac --enable-libvo-amrwbenc \ --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvorbis --enable-libspeex \ --enable-libopus --enable-libgsm --enable-libtwolame --enable-libsoxr \ --enable-libmodplug --enable-libopenjpeg --enable-libwebp \ --enable-libtheora --enable-libx264 --enable-libopenh264 --enable-libx265 \ --enable-libxvid --enable-libvpx --enable-libxavs \ --enable-libfreetype --enable-libharfbuzz --enable-fontconfig --enable-libfribidi \ --enable-libass --enable-libbluray --enable-libvidstab \ --enable-libsnappy --enable-libzmq --enable-libzvbi \ --enable-libzimg --enable-libaom --enable-libdav1d --enable-libmysofa \ --enable-librubberband --enable-libshine \ --enable-libvmaf --enable-libsvtav1 --enable-libxml2 \ --enable-libplacebo I'm exporting following compiler flags: export LDFLAGS="-L${TARGET}/lib -lc++ -Wl,-rpath,/usr/local/lib" export CFLAGS="-I${TARGET}/include -lstdc++" Please help me!!

3 5

Generic way to deal with different pixel formats in a HW context
by Jonathan Baecker 29 Jan '25

29 Jan '25

Hi, I want to run this command: ffmpeg -hwaccel_device 0 -hwaccel cuda -hwaccel_output_format cuda -i input.mp4 -vf scale_cuda=-1:-1 -c:v h264_nvenc -f null - If my input file has a pixel format of yuv420p then the command works fine, but if the file has gbrp the conversion fails: ffmpeg version git-2024-11-08-3330b733d3 Copyright (c) 2000-2024 the FFmpeg developers built with gcc 14 (GCC) configuration: --disable-debug --disable-shared --disable-doc --enable-gpl --enable-version3 --enable-runtime-cpudetect --enable-avfilter --enable-zlib --enable-libklvanc --enable-fontconfig --enable-libass --enable-libfdk-aac --enable-libfribidi --enable-libfreetype --enable-libharfbuzz --enable-libmp3lame --enable-libopus --enable-libsoxr --enable-libsrt --enable-librist --enable-libtwolame --enable-libvpx --enable-libx264 --enable-libx265 --enable-libzimg --enable-libzmq --enable-nonfree --enable-opengl --enable-openssl --enable-libsvtav1 --enable-librav1e --enable-libdav1d --enable-cuvid --enable-nvenc --enable-nvdec --enable-libpulse --enable-vulkan --enable-libplacebo --enable-libshaderc --enable-libvpl --enable-pic libavutil 59. 46.100 / 59. 46.100 libavcodec 61. 24.100 / 61. 24.100 libavformat 61. 9.100 / 61. 9.100 libavdevice 61. 4.100 / 61. 4.100 libavfilter 10. 6.101 / 10. 6.101 libswscale 8. 9.101 / 8. 9.101 libswresample 5. 4.100 / 5. 4.100 libpostproc 58. 4.100 / 58. 4.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tests/assets/media_mix/short_audio.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf59.31.100 Duration: 00:00:10.00, start: 0.000000, bitrate: 2623 kb/s Stream #0:0[0x1](und): Video: hevc (Rext) (hev1 / 0x31766568), gbrp(pc, gbr/unknown/unknown, progressive), 1280x720 [SAR 1:1 DAR 16:9], 2499 kb/s, 25 fps, 25 tbr, 12800 tbn (default) Metadata: handler_name : VideoHandler vendor_id : [0][0][0][0] encoder : Lavc59.43.100 libx265 Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default) Metadata: handler_name : SoundHandler vendor_id : [0][0][0][0] Stream mapping: Stream #0:0 -> #0:0 (hevc (native) -> h264 (h264_nvenc)) Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native)) Press [q] to stop, [?] for help Impossible to convert between the formats supported by the filter 'graph -1 input from stream 0:0' and the filter 'auto_scale_0' [vf#0:0 @ 0x1d88d300] Error reinitializing filters! [vf#0:0 @ 0x1d88d300] Task finished with error code: -38 (Function not implemented) [vf#0:0 @ 0x1d88d300] Terminating thread with return code -38 (Function not implemented) [vost#0:0/h264_nvenc @ 0x1d88db00] [enc:h264_nvenc @ 0x1d88d1c0] Could not open encoder before EOF [vost#0:0/h264_nvenc @ 0x1d88db00] Task finished with error code: -22 (Invalid argument) [vost#0:0/h264_nvenc @ 0x1d88db00] Terminating thread with return code -22 (Invalid argument) [out#0/null @ 0x1d88e300] Nothing was written into output file, because at least one of its streams received no packets. I can add hwupload_cuda to the filter chain and it works again. The problem is that I need a generic solution that works with both pixel formats without the need for different filter chains. Is there any way to solve this? Thanks a lot! Jonathan

1 0

Command line to show channel label/position
by MrNice 29 Jan '25

29 Jan '25

Hello there, What is the best command line to get details about channels position/label in a multichannel audio file ? I tried ffprobe but I get only channels=6 channel_layout=5.1 not FR, FL, C, LFE, BL ... BTW what is the best way to name this parameter ? *ffprobe -show_streams -i 102MJ.flac* ffprobe version 4.4.4 Copyright (c) 2007-2023 the FFmpeg developers built with gcc 7 (SUSE Linux) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --incdir=/usr/include/ffmpeg --extra-cflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -g' --optflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -g' --disable-htmlpages --enable-pic --disable-stripping --enable-shared --disable-static --enable-gpl --enable-version3 --enable-libsmbclient --disable-openssl --enable-avresample --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcelt --enable-libcdio --enable-libdav1d --enable-libdc1394 --enable-libdrm --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libzvbi --enable-vaapi --enable-vdpau --enable-version3 --enable-libfdk-aac-dlopen --enable-nonfree --enable-libvo-amrwbenc --enable-libx264 --enable-libx265 --enable-librtmp --enable-libxvid libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, flac, from '102MJ.flac': Metadata: encoder : Lavf58.76.100 Duration: 00:03:01.31, start: 0.000000, bitrate: 1388 kb/s Stream #0:0: Audio: flac, 44100 Hz, 5.1, s16 [STREAM] index=0 codec_name=flac codec_long_name=FLAC (Free Lossless Audio Codec) profile=unknown codec_type=audio codec_tag_string=[0][0][0][0] codec_tag=0x0000 sample_fmt=s16 sample_rate=44100 *channels=6 channel_layout=5.1* bits_per_sample=0 id=N/A r_frame_rate=0/0 avg_frame_rate=0/0 time_base=1/44100 start_pts=0 start_time=0.000000 duration_ts=7995624 duration=181.306667 bit_rate=N/A max_bit_rate=N/A bits_per_raw_sample=16 nb_frames=N/A nb_read_frames=N/A nb_read_packets=N/A DISPOSITION:default=0 DISPOSITION:dub=0 DISPOSITION:original=0 DISPOSITION:comment=0 DISPOSITION:lyrics=0 DISPOSITION:karaoke=0 DISPOSITION:forced=0 DISPOSITION:hearing_impaired=0 DISPOSITION:visual_impaired=0 DISPOSITION:clean_effects=0 DISPOSITION:attached_pic=0 DISPOSITION:timed_thumbnails=0 [/STREAM] Thanks

5 13

Licensing rules
by Avitrr Aparnesh 29 Jan '25

29 Jan '25

Hello, We are developing a video ingestion,live-stream, playback, and analytics service. We are planning to use FFmpeg as a core component of our video encoding pipeline. Our system will involve live streaming from various cameras, storing the video data (potentially on-premise or on cloud), and enabling features like video playback and advanced analytics. We would greatly appreciate it if you could provide information on the following: * FFmpeg Licensing: * What are the licensing terms and conditions for using FFmpeg in our commercial video service? * Are there any specific restrictions or limitations related to our use case? * Obtaining a License: * How can we obtain the necessary licenses for commercial use of FFmpeg in our code/product? Thanks and regards [signature_3903953335]<https://www.getgenea.com/> AVITRR APARNESH Senior Software Engineer I aaparnesh(a)getgenea.com<mailto:aaparnesh@getgenea.com> I +91-8094927889 I www.getgenea.com<http://www.getgenea.com/> #211/212, Block A, Navratna Corporate Park, Nr Jayantilal BRTS Stand, Opposite Dishman House, Ashok Vatika, Bopal-Ambli Road Ahmedabad, India 380058 [Icon Description automatically generated]<https://www.linkedin.com/company/getgenea>[Icon Description automatically generated]<https://www.instagram.com/getgenea/>[Icon Description automatically generated]<https://www.facebook.com/getgenea>[Icon Description automatically generated]<https://twitter.com/GetGenea>

3 2

af_silenceremove timestamp copy option doesn't seem to work
by Justin 25 Jan '25

25 Jan '25

Hello! I am trying to use the *silenceremove *filter as explained in the ffmpeg documentation. <https://ffmpeg.org/ffmpeg-filters.html#toc-silenceremove> I wanted to keep the original timestamps from the modified audio file with the *timestamp=copy *option. The silence is removed as expected, but after running *ashowinfo*, the original timestamps seem to have been modified. In fact, regardless of *timestamp=copy *and *timestamp=write*, there is no difference in the *pts* output values. I might be misunderstanding how it works though, so I wanted to double check here. Here is what I did. 1. Downloaded a sample sound with multiple silences. This is the sound <https://freesound.org/people/frosthardr/sounds/253067/> I used. I named it *in.wav*. If you take a look at the waveform, there are 4 pulses of sound that last roughly 2.5 seconds, with about 1 second of silence between each one (the entire audio clip is roughly 15 seconds). 2. I used the following command to generate an output with copied timestamps: *Command:* *ffmpeg -y -i ~/files/test_ffmpeg/in.wav -filter_complex silenceremove=stop_periods=-1:timestamp=copy:stop_threshold=-30dB ~/files/test_ffmpeg/out_copy.wav* * Output:* *ffmpeg version N-118350-ge20ee9f9ae Copyright (c) 2000-2025 the FFmpeg developers built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04) configuration: --prefix=/home/justin/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/justin/ffmpeg_build/include --extra-ldflags=-L/home/justin/ffmpeg_build/lib --extra-libs='-lpthread -lm' --ld=g++ --bindir=/home/justin/bin --enable-gpl --enable-gnutls --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-nonfree libavutil 59. 55.100 / 59. 55.100 libavcodec 61. 31.101 / 61. 31.101 libavformat 61. 9.106 / 61. 9.106 libavdevice 61. 4.100 / 61. 4.100 libavfilter 10. 6.101 / 10. 6.101 libswscale 8. 13.100 / 8. 13.100 libswresample 5. 4.100 / 5. 4.100 libpostproc 58. 4.100 / 58. 4.100 [aist#0:0/pcm_s16le @ 0x5621b0ab7a40] Guessed Channel Layout: stereo Input #0, wav, from '/home/justin/files/test_ffmpeg/in.wav': Metadata: title : Electronic Drum Loop 01 artist : Matech comment : soundcloud.com/matech-1/ <http://soundcloud.com/matech-1/> Duration: 00:00:15.24, bitrate: 1411 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s Stream mapping: Stream #0:0 (pcm_s16le) -> silenceremove:default silenceremove:default -> Stream #0:0 (pcm_s16le) Press [q] to stop, [?] for help Output #0, wav, to '/home/justin/files/test_ffmpeg/out_copy.wav': Metadata: INAM : Electronic Drum Loop 01 IART : Matech ICMT : soundcloud.com/matech-1/ <http://soundcloud.com/matech-1/> ISFT : Lavf61.9.106 Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s Metadata: encoder : Lavc61.31.101 pcm_s16le [out#0/wav @ 0x5621b0ab9e00] video:0KiB audio:1110KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.014075% size= 1110KiB time=00:00:13.28 bitrate= 684.7kbits/s speed= 459x * 3. I also generated an output with overwritten timestamps: *Command:* *ffmpeg -y -i ~/files/test_ffmpeg/in.wav -filter_complex silenceremove=stop_periods=-1:timestamp=write:stop_threshold=-30dB ~/files/test_ffmpeg/out_write.wav* *Output:* *ffmpeg version N-118350-ge20ee9f9ae Copyright (c) 2000-2025 the FFmpeg developers built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04) configuration: --prefix=/home/justin/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/justin/ffmpeg_build/include --extra-ldflags=-L/home/justin/ffmpeg_build/lib --extra-libs='-lpthread -lm' --ld=g++ --bindir=/home/justin/bin --enable-gpl --enable-gnutls --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-nonfree libavutil 59. 55.100 / 59. 55.100 libavcodec 61. 31.101 / 61. 31.101 libavformat 61. 9.106 / 61. 9.106 libavdevice 61. 4.100 / 61. 4.100 libavfilter 10. 6.101 / 10. 6.101 libswscale 8. 13.100 / 8. 13.100 libswresample 5. 4.100 / 5. 4.100 libpostproc 58. 4.100 / 58. 4.100 [aist#0:0/pcm_s16le @ 0x5c514279ea40] Guessed Channel Layout: stereo Input #0, wav, from '/home/justin/files/test_ffmpeg/in.wav': Metadata: title : Electronic Drum Loop 01 artist : Matech comment : soundcloud.com/matech-1/ <http://soundcloud.com/matech-1/> Duration: 00:00:15.24, bitrate: 1411 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s Stream mapping: Stream #0:0 (pcm_s16le) -> silenceremove:default silenceremove:default -> Stream #0:0 (pcm_s16le) Press [q] to stop, [?] for help Output #0, wav, to '/home/justin/files/test_ffmpeg/out_write.wav': Metadata: INAM : Electronic Drum Loop 01 IART : Matech ICMT : soundcloud.com/matech-1/ <http://soundcloud.com/matech-1/> ISFT : Lavf61.9.106 Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s Metadata: encoder : Lavc61.31.101 pcm_s16le [out#0/wav @ 0x5c51427a0e00] video:0KiB audio:1110KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.014075% size= 1110KiB time=00:00:06.44 bitrate=1411.4kbits/s speed= 227x * 4. I then ran the following commands to get the timestamp output for each of the above files. See the attached files since the output was too long to paste here. *ffmpeg -i ~/files/test_ffmpeg/in.wav -filter_complex ashowinfo -f null - 2> ~/files/test_ffmpeg/in_ashowinfo.txt* *ffmpeg -i ~/files/test_ffmpeg/out_copy.wav -filter_complex ashowinfo -f null - 2> ~/files/test_ffmpeg/out_copy_ashowinfo.txt* *ffmpeg -i ~/files/test_ffmpeg/out_write.wav -filter_complex ashowinfo -f null - 2> ~/files/test_ffmpeg/out_write_ashowinfo.txt* Here are the ends of the files to explain the issue: *in_ashowinfo.txt * *[Parsed_ashowinfo_0 @ 0x72aa280025c0] n:160 pts:655360 pts_time:14.860771 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:BFC63EA4 plane_checksums: [ BFC63EA4 ][Parsed_ashowinfo_0 @ 0x72aa280025c0] n:161 pts:659456 pts_time:14.953651 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:44D92A6E plane_checksums: [ 44D92A6E ][Parsed_ashowinfo_0 @ 0x72aa280025c0] n:162 pts:663552 pts_time:15.046531 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:071FC31C plane_checksums: [ 071FC31C ][Parsed_ashowinfo_0 @ 0x72aa280025c0] n:163 pts:667648 pts_time:15.13941 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:AD15BC98 plane_checksums: [ AD15BC98 ][Parsed_ashowinfo_0 @ 0x72aa280025c0] n:164 pts:671744 pts_time:15.23229 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:256 checksum:00000000 plane_checksums: [ 00000000 ][out#0/null @ 0x5a0bc0b35440] video:0KiB audio:2625KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: unknownsize=N/A time=00:00:15.23 bitrate=N/A speed=1.81e+03x * *out_copy_ashowinfo.txt * *[Parsed_ashowinfo_0 @ 0x7fc9fc0025c0] n:64 pts:262144 pts_time:5.944308 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:340B4DDC plane_checksums: [ 340B4DDC ][Parsed_ashowinfo_0 @ 0x7fc9fc0025c0] n:65 pts:266240 pts_time:6.037188 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:F2148934 plane_checksums: [ F2148934 ][Parsed_ashowinfo_0 @ 0x7fc9fc0025c0] n:66 pts:270336 pts_time:6.130068 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:F374BB67 plane_checksums: [ F374BB67 ][Parsed_ashowinfo_0 @ 0x7fc9fc0025c0] n:67 pts:274432 pts_time:6.222948 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:570F8385 plane_checksums: [ 570F8385 ][Parsed_ashowinfo_0 @ 0x7fc9fc0025c0] n:68 pts:278528 pts_time:6.315828 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:4096 checksum:0983C2F7 plane_checksums: [ 0983C2F7 ][Parsed_ashowinfo_0 @ 0x7fc9fc0025c0] n:69 pts:282624 pts_time:6.408707 fmt:s16 channels:2 chlayout:stereo rate:44100 nb_samples:1560 checksum:017E3AB0 plane_checksums: [ 017E3AB0 ][out#0/null @ 0x61dc2756bac0] video:0KiB audio:1110KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: unknownsize=N/A time=00:00:06.44 bitrate=N/A speed=1.99e+03x * Based on the waveform, the *out_copy_ashowinfo.txt *says the last timestamp is roughly 6 seconds, but if the original timestamps were maintained then it should be roughly 11 seconds, since this is when the last pulse of audio is played. I would expect there to be gaps in the timestamps which correspond to the removed silence but there isn't. Also note that the contents of *out_write_ashowinfo.txt *is identical to *out_copy_ashowinfo.txt*, so the option doesn't seem to do anything. Thanks all for your help! -Justin

4 3