February 2022 - ffmpeg-user - lists.ffmpeg.org

ERROR: libvmaf >= 2.0.0 not found using pkg-config
by 桃源老師 05 Feb '22

05 Feb '22

Hello, I experienced funny ffmpeg compille error "ERROR: libvmaf >= 2.0.0 not found using pkg-config". The reason why I feel funny is that ffmpeg commit of "06a54a4ec73ea6eb8cec41b7af75367bafb075e0(Date: Sat Jan 22 10:32:34 2022 +0100)" can configure and make correctly, but current git head can't configure. I suppose something wrong was happened after 2022/01/22. I'm trying to build ffmpeg on macOS 12.2. The seems to error portion on config.log is: /var/folders/1d/qk_hczkn68xfv_7gdbkmhwx40000gn/T//ffconf.DmkkrFIx/test.c:3:44: error: use of undeclared identifier 'vmaf_init' long check_vmaf_init(void) { return (long) vmaf_init; } ^ 1 error generated. ERROR: libvmaf >= 2.0.0 not found using pkg-config Any help is appreciated...

5 9

Using different libavfilter than in ffmpeg-4.4.tar.bz2
by Matt C 04 Feb '22

04 Feb '22

Trying to use vf_ccrepack.c I need to use libavfilter from https://github.com/LTNGlobal-opensource/FFmpeg-ltn/tree/lted1 And not the version from ffmpeg-4.4.tar.bz2 How would I do that? On Ubuntu 21.10, using this config: cd ~/ffmpeg_sources wget https://ffmpeg.org/releases/ffmpeg-4.4.tar.bz2 tar -xvf ffmpeg-*.tar.bz2 cd ffmpeg-*/ PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \ --prefix="$HOME/ffmpeg_build" \ --pkg-config-flags="--static" \ --extra-cflags="-I$HOME/ffmpeg_build/include -I$HOME/ffmpeg_sources/BMD_SDK/include" \ --extra-ldflags="-L$HOME/ffmpeg_build/lib" \ --extra-libs="-lpthread -lm" \ --bindir="$HOME/bin" \ --enable-debug \ --disable-shared \ --disable-doc \ --disable-ffplay \ --disable-sdl2 \ --enable-gpl \ --enable-libass \ --enable-libfdk-aac \ --enable-libfreetype \ --enable-libmp3lame \ --enable-libopus \ --enable-libsvtav1 \ --enable-libvorbis \ --enable-libvpx \ --enable-libx264 \ --enable-libx265 \ --enable-nonfree \ --enable-version3 \ --enable-runtime-cpudetect \ --enable-avfilter \ --enable-fontconfig \ --enable-libfribidi \ --enable-libsoxr \ --enable-libsrt \ --enable-libtwolame \ --enable-libvpx \ --enable-openssl \ --enable-zlib \ --enable-pic \ --enable-libklvanc\ --enable-decklink

2 2

Is err_detect working at all?
by Nicolas Tardieu 04 Feb '22

04 Feb '22

Hello, I'm used to -xerror but I need a more permissive threshold so I tried -err_detect. (I was interested in the 'careful' option) But -err_detect does not seem to have any impact, whatever flag is passed. I tried corrupted audio or video files, ffmpeg 4.4 and 5, different encoders. Here is an example where I would expect '-err_detect explode' to return a failed conversion and exit_code !=0. Am I doing something wrong or is it just not the way it is supposed to work? Thanks ffmpeg -err_detect explode -i "/Users/xxx/Desktop/2_f_audio_stream_2.mp4" -vn -c:a aac -b:a 96k -ar 48000 "/Users/xxx/Desktop/out.mp4" -loglevel debug -y ffmpeg version 5.0 Copyright (c) 2000-2022 the FFmpeg developers built with Apple clang version 12.0.0 (clang-1200.0.32.29) configuration: --prefix=/usr/local/Cellar/ffmpeg/5.0-with-options --enable-shared --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libaom --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-demuxer=dash --enable-opencl --enable-videotoolbox --disable-htmlpages --enable-libfdk-aac --enable-nonfree libavutil 57. 17.100 / 57. 17.100 libavcodec 59. 18.100 / 59. 18.100 libavformat 59. 16.100 / 59. 16.100 libavdevice 59. 4.100 / 59. 4.100 libavfilter 8. 24.100 / 8. 24.100 libswscale 6. 4.100 / 6. 4.100 libswresample 4. 3.100 / 4. 3.100 libpostproc 56. 3.100 / 56. 3.100 Splitting the commandline. Reading option '-err_detect' ...Routing option err_detect to both codec and muxer layer matched as AVOption 'err_detect' with argument 'explode'. Reading option '-i' ... matched as input url with argument '/Users/xxx /Desktop/2_f_audio_stream_2.mp4'. Reading option '-vn' ... matched as option 'vn' (disable video) with argument '1'. Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'aac'. Reading option '-b:a' ... matched as option 'b' (video bitrate (please use -b:v)) with argument '96k'. Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '48000'. Reading option '/Users/xxx/Desktop/out.mp4' ... matched as output url. Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'. Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'. Finished splitting the commandline. Parsing a group of options: global . Applying option loglevel (set logging level) with argument debug. Applying option y (overwrite output files) with argument 1. Successfully parsed a group of options. Parsing a group of options: input url /Users/xxx /Desktop/2_f_audio_stream_2.mp4. Successfully parsed a group of options. Opening an input file: /Users/xxx/Desktop/2_f_audio_stream_2.mp4. [NULL @ 0x7fb628904d40] Opening '/Users/xxx/Desktop/2_f_audio_stream_2.mp4' for reading [file @ 0x7fb628905180] Setting default whitelist 'file,crypto,data' [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] ISO: File Type Major Brand: isom [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] Unknown dref type 0x206c7275 size 12 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] Processing st: 0, edit list 0 - media time: 1024, duration: 32221440 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] drop a frame at curr_cts: 0 @ 0 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] Before avformat_find_stream_info() pos: 21680592 bytes read:159551 seeks:1 nb_streams:1 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] demuxer injecting skip 1024 / discard 0 [aac @ 0x7fb628905b80] skip 1024 / discard 0 samples due to side data [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] All info found [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb628904d40] After avformat_find_stream_info() pos: 122 bytes read:192319 seeks:2 frames:1 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/xxx /Desktop/2_f_audio_stream_2.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf59.16.100 Duration: 00:11:11.28, start: 0.000000, bitrate: 258 kb/s Stream #0:0[0x1](und), 1, 1/48000: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default) Metadata: handler_name : SoundHandler vendor_id : [0][0][0][0] Successfully opened the file. Parsing a group of options: output url /Users/xxx/Desktop/out.mp4. Applying option vn (disable video) with argument 1. Applying option c:a (codec name) with argument aac. Applying option b:a (video bitrate (please use -b:v)) with argument 96k. Applying option ar (set audio sampling rate (in Hz)) with argument 48000. Successfully parsed a group of options. Opening an output file: /Users/xxx/Desktop/out.mp4. [file @ 0x7fb628908280] Setting default whitelist 'file,crypto,data' Successfully opened the file. Stream mapping: Stream #0:0 -> #0:0 (aac (native) -> aac (native)) Press [q] to stop, [?] for help cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream) [aac @ 0x7fb628909580] skip 1024 / discard 0 samples due to side data cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream) detected 12 logical cores [graph_0_in_0_0 @ 0x7fb628d043c0] Setting 'time_base' to value '1/48000' [graph_0_in_0_0 @ 0x7fb628d043c0] Setting 'sample_rate' to value '48000' [graph_0_in_0_0 @ 0x7fb628d043c0] Setting 'sample_fmt' to value 'fltp' [graph_0_in_0_0 @ 0x7fb628d043c0] Setting 'channel_layout' to value '0x3' [graph_0_in_0_0 @ 0x7fb628d043c0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3 [format_out_0_0 @ 0x7fb628d04740] Setting 'sample_fmts' to value 'fltp' [format_out_0_0 @ 0x7fb628d04740] Setting 'sample_rates' to value '48000' [AVFilterGraph @ 0x7fb62890b800] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed Output #0, mp4, to '/Users/xxx/Desktop/out.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf59.16.100 Stream #0:0(und), 0, 1/48000: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, delay 1024, 96 kb/s (default) Metadata: handler_name : SoundHandler vendor_id : [0][0][0][0] encoder : Lavc59.18.100 aac cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream) [aac @ 0x7fb628909580] error in spectral data, ESC overflowd=43.5x Error while decoding stream #0:0: Invalid data found when processing input [out_0_0 @ 0x7fb628d045c0] EOF on sink link out_0_0:default.=45.4x No more output streams to write to, finishing. size= 7976kB time=00:11:11.29 bitrate= 97.3kbits/s speed=45.5x video:0kB audio:7852kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.576995% Input file #0 (/Users/xxx/Desktop/2_f_audio_stream_2.mp4): Input stream #0:0 (audio): 31468 packets read (21553765 bytes); 31466 frames decoded (32221184 samples); Total: 31468 packets (21553765 bytes) demuxed Output file #0 (/Users/xxx/Desktop/out.mp4): Output stream #0:0 (audio): 31466 frames encoded (32221184 samples); 31467 packets muxed (8040801 bytes); Total: 31467 packets (8040801 bytes) muxed [AVIOContext @ 0x7fb628908380] Statistics: 8167608 bytes written, 2 seeks, 34 writeouts 31466 frames successfully decoded, 1 decoding errors [aac @ 0x7fb628907640] Qavg: 532.756 [AVIOContext @ 0x7fb628905300] Statistics: 21720895 bytes read, 2 seeks

1 0

map_metadata to overwrite metadata?
by Leo Butler 04 Feb '22

04 Feb '22

Synopsis: I have a video (.webm) with existing chapter metadata. I want to overwrite that with data from a metadata file. I don't understand why map_metadata can write, but does not overwrite, chapter metadata. Try: Create a video with a couple chapters (see below): ffmpeg -y -f lavfi -i 'color=c=red:s=1280x720' -i meta.txt -map_metadata 1 -t 20 test.webm Overwrite(?) the metadata: ffmpeg -y -i test.webm -i meta-2.txt -map_metadata 1 test-2.webm That does not work, but this does: ffmpeg -y -i test.webm -i meta-2.txt -map_metadata 1 -map_chapters 1 test-3.webm Question: why does the first insert the chapter information, but the second does not overwrite the chapter information, and why is '-map_chapters' needed? Output: $ ffmpeg -y -f lavfi -i 'color=c=red:s=1280x720' -i meta.txt -map_metadata 1 -t 20 test.webm ffmpeg version 4.4.1-3 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 11 (Debian 11.2.0-14) configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared 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 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, lavfi, from 'color=c=red:s=1280x720': Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc Input #1, ffmetadata, from 'meta.txt': Metadata: title : Title artist : Dr Leo Butler email : leo.butler(a)example.com date : 04 February 2022 Duration: 00:00:20.00, start: 0.000000, bitrate: 0 kb/s Chapters: Chapter #1:0: start 0.000000, end 0.750000 Metadata: title : introduction Chapter #1:1: start 0.750000, end 20.000000 Metadata: title : conclusion Stream mapping: Stream #0:0 -> #0:0 (rawvideo (native) -> vp9 (libvpx-vp9)) Press [q] to stop, [?] for help [libvpx-vp9 @ 0x561af4c67180] v1.11.0 [libvpx-vp9 @ 0x561af4c67180] Neither bitrate nor constrained quality specified, using default CRF of 32 Output #0, webm, to 'test.webm': Metadata: title : Title artist : Dr Leo Butler email : leo.butler(a)example.com date : 04 February 2022 encoder : Lavf58.76.100 Chapters: Chapter #0:0: start 0.000000, end 0.750000 Metadata: title : introduction Chapter #0:1: start 0.750000, end 20.000000 Metadata: title : conclusion Stream #0:0: Video: vp9, yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 1k tbn Metadata: encoder : Lavc58.134.100 libvpx-vp9 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A frame= 500 fps=106 q=0.0 Lsize= 25kB time=00:00:19.96 bitrate= 10.2kbits/s speed=4.25x video:21kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 17.996834% $ ffmpeg -y -i test.webm -i meta-2.txt -map_metadata 1 test-2.webm ffmpeg version 4.4.1-3 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 11 (Debian 11.2.0-14) configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared 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 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, matroska,webm, from 'test.webm': Metadata: title : Title DATE : 04 February 2022 ARTIST : Dr Leo Butler EMAIL : leo.butler(a)example.com ENCODER : Lavf58.76.100 Duration: 00:00:20.00, start: 0.000000, bitrate: 10 kb/s Chapters: Chapter #0:0: start 0.000000, end 0.750000 Metadata: title : introduction Chapter #0:1: start 0.750000, end 20.000000 Metadata: title : conclusion Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv, progressive), 1280x720, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default) Metadata: ENCODER : Lavc58.134.100 libvpx-vp9 DURATION : 00:00:20.000000000 Input #1, ffmetadata, from 'meta-2.txt': Metadata: title : Title artist : Dr Leo Butler email : leo.butler(a)example.com date : 04 February 2022 Duration: 00:00:20.00, start: 0.000000, bitrate: 0 kb/s Chapters: Chapter #1:0: start 0.000000, end 1.750000 Metadata: title : introduction Chapter #1:1: start 1.750000, end 20.000000 Metadata: title : conclusion Stream mapping: Stream #0:0 -> #0:0 (vp9 (native) -> vp9 (libvpx-vp9)) Press [q] to stop, [?] for help [libvpx-vp9 @ 0x55825e987bc0] v1.11.0 [libvpx-vp9 @ 0x55825e987bc0] Neither bitrate nor constrained quality specified, using default CRF of 32 Output #0, webm, to 'test-2.webm': Metadata: title : Title artist : Dr Leo Butler email : leo.butler(a)example.com date : 04 February 2022 encoder : Lavf58.76.100 Chapters: Chapter #0:0: start 0.000000, end 0.750000 Metadata: title : introduction Chapter #0:1: start 0.750000, end 20.000000 Metadata: title : conclusion Stream #0:0: Video: vp9, yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 1k tbn (default) Metadata: DURATION : 00:00:20.000000000 encoder : Lavc58.134.100 libvpx-vp9 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A frame= 500 fps= 89 q=0.0 Lsize= 25kB time=00:00:19.96 bitrate= 10.2kbits/s speed=3.53x video:21kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 18.029428% $ ffmpeg -y -i test.webm -i meta-2.txt -map_metadata 1 -map_chapters 1 test-3.webm ffmpeg version 4.4.1-3 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 11 (Debian 11.2.0-14) configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared 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 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, matroska,webm, from 'test.webm': Metadata: title : Title DATE : 04 February 2022 ARTIST : Dr Leo Butler EMAIL : leo.butler(a)example.com ENCODER : Lavf58.76.100 Duration: 00:00:20.00, start: 0.000000, bitrate: 10 kb/s Chapters: Chapter #0:0: start 0.000000, end 0.750000 Metadata: title : introduction Chapter #0:1: start 0.750000, end 20.000000 Metadata: title : conclusion Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv, progressive), 1280x720, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default) Metadata: ENCODER : Lavc58.134.100 libvpx-vp9 DURATION : 00:00:20.000000000 Input #1, ffmetadata, from 'meta-2.txt': Metadata: title : Title artist : Dr Leo Butler email : leo.butler(a)example.com date : 04 February 2022 Duration: 00:00:20.00, start: 0.000000, bitrate: 0 kb/s Chapters: Chapter #1:0: start 0.000000, end 1.750000 Metadata: title : introduction Chapter #1:1: start 1.750000, end 20.000000 Metadata: title : conclusion Stream mapping: Stream #0:0 -> #0:0 (vp9 (native) -> vp9 (libvpx-vp9)) Press [q] to stop, [?] for help [libvpx-vp9 @ 0x5618e3072c00] v1.11.0 [libvpx-vp9 @ 0x5618e3072c00] Neither bitrate nor constrained quality specified, using default CRF of 32 Output #0, webm, to 'test-3.webm': Metadata: title : Title artist : Dr Leo Butler email : leo.butler(a)example.com date : 04 February 2022 encoder : Lavf58.76.100 Chapters: Chapter #0:0: start 0.000000, end 1.750000 Metadata: title : introduction Chapter #0:1: start 1.750000, end 20.000000 Metadata: title : conclusion Stream #0:0: Video: vp9, yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 1k tbn (default) Metadata: DURATION : 00:00:20.000000000 encoder : Lavc58.134.100 libvpx-vp9 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A frame= 500 fps= 96 q=0.0 Lsize= 25kB time=00:00:19.96 bitrate= 10.2kbits/s speed=3.82x video:21kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 18.029428% $ cat meta.txt ;FFMETADATA1 title=Title artist=Dr Leo Butler email=leo.butler(a)example.com date=04 February 2022 [CHAPTER] TIMEBASE=1/1000 START=0 END=750.0 title=introduction [CHAPTER] TIMEBASE=1/1000 START=750.0 END=20000.0 title=conclusion $ cat meta-2.txt ;FFMETADATA1 title=Title artist=Dr Leo Butler email=leo.butler(a)example.com date=04 February 2022 [CHAPTER] TIMEBASE=1/1000 START=0 END=1750.0 title=introduction [CHAPTER] TIMEBASE=1/1000 START=1750.0 END=20000.o title=conclusion TIA, Leo

1 0

x265 encoded with yuvj444p plays back as yuvj420p
by ‍小太 03 Feb '22

03 Feb '22

Hi, I have a screen recording made with OBS that's originally encoded with H.264 with the yuvj444p pixel format. Here's the sample I used: https://0x0.st/oHn-.mkv I want to re-encode this as H.265, so I used the following ffmpeg command: > ffmpeg -i input.mkv -codec:v libx265 -preset fast -crf 22 -codec:a copy output.mkv Here's the sample I obtained out of it: https://0x0.st/oHnX.mkv But when I play the x265-encoded version back in VLC or ffplay, it seems to assume the pixel format is yuvj420p, resulting in colours being in the wrong places. What am I doing wrong? Below is the full CLI output of ffmpeg and ffplay $ ffmpeg -i '2022-02-04 07-48-33.mkv' -codec:v libx265 -preset fast -crf 22 -codec:a copy /tmp/a.mkv ffmpeg version 4.4.1-3 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 11 (Debian 11.2.0-14) configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared WARNING: library configuration mismatch avcodec configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc --enable-libsmbclient 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 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, matroska,webm, from '2022-02-04 07-48-33.mkv': Metadata: ENCODER : Lavf58.76.100 Duration: 00:00:02.02, start: 0.000000, bitrate: 1908 kb/s Stream #0:0: Video: h264 (High 4:4:4 Predictive), yuvj444p(pc, bt709/bt709/iec61966-2-1, progressive), 2560x1440 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 1k tbn, 120 tbc (default) Metadata: DURATION : 00:00:02.017000000 Stream #0:1: Audio: aac (LC), 48000 Hz, 5.1, fltp (default) Metadata: title : Track1 DURATION : 00:00:02.005000000 Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> hevc (libx265)) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help x265 [info]: HEVC encoder version 3.5+1-f0c1022b6 x265 [info]: build info [Linux][GCC 10.3.0][64 bit] 8bit+10bit+12bit x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 x265 [info]: Main profile, Level-5 (Main tier) x265 [info]: Thread pool 0 using 48 threads on numa nodes 0,1,2,3 x265 [info]: Slices : 1 x265 [info]: frame threads / pool features : 5 / wpp(23 rows) libnuma: Warning: node 0 not allowed x265 [info]: Coding QT: max CU size, min CU size : 64 / 8 x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 2 x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00 x265 [info]: Lookahead / bframes / badapt : 15 / 4 / 0 x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0 x265 [info]: References / ref-limit cu / depth : 3 / on / on x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1 x265 [info]: Rate Control / qCompress : CRF-22.0 / 0.60 x265 [info]: tools: rd=2 psy-rd=2.00 rskip mode=1 signhide tmvp fast-intra x265 [info]: tools: strong-intra-smoothing lslices=8 deblock sao Output #0, matroska, to '/tmp/a.mkv': Metadata: encoder : Lavf58.76.100 Stream #0:0: Video: hevc, yuvj444p(pc, bt709/bt709/iec61966-2-1, progressive), 2560x1440 [SAR 1:1 DAR 16:9], q=2-31, 60 fps, 1k tbn (default) Metadata: DURATION : 00:00:02.017000000 encoder : Lavc58.134.100 libx265 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A Stream #0:1: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 48000 Hz, 5.1, fltp (default) Metadata: title : Track1 DURATION : 00:00:02.005000000 frame= 121 fps=107 q=32.9 Lsize= 144kB time=00:00:02.00 bitrate= 587.2kbits/s speed=1.77x video:137kB audio:2kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 3.229585% x265 [info]: frame I: 1, Avg QP:25.28 kb/s: 52256.64 x265 [info]: frame P: 24, Avg QP:29.55 kb/s: 172.86 x265 [info]: frame B: 96, Avg QP:32.69 kb/s: 113.78 x265 [info]: Weighted P-Frames: Y:0.0% UV:0.0% x265 [info]: consecutive B-frames: 4.0% 0.0% 0.0% 0.0% 96.0% encoded 121 frames in 1.07s (112.58 fps), 556.44 kb/s, Avg QP:32.00 $ ffplay /tmp/a.mkv ffplay version 4.4.1-3 Copyright (c) 2003-2021 the FFmpeg developers built with gcc 11 (Debian 11.2.0-14) configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared WARNING: library configuration mismatch avcodec configuration: --prefix=/usr --extra-version=3 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc --enable-libsmbclient 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 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, matroska,webm, from '/tmp/a.mkv': 0KB sq= 0B f=0/0 Metadata: ENCODER : Lavf58.76.100 Duration: 00:00:02.03, start: 0.000000, bitrate: 581 kb/s Stream #0:0: Video: hevc (Main), yuvj420p(pc, bt709/bt709/iec61966-2-1, progressive), 2560x1440 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 1k tbn, 60 tbc (default) Metadata: ENCODER : Lavc58.134.100 libx265 DURATION : 00:00:02.017000000 Stream #0:1: Audio: aac (LC), 48000 Hz, 5.1, fltp (default) Metadata: title : Track1 DURATION : 00:00:02.026000000 [swscaler @ 0x7efdadf2fcc0] deprecated pixel format used, make sure you did set range correctly 3.26 A-V: -0.019 fd= 6 aq= 0KB vq= 0KB sq= 0B f=0/0

2 7

Looking for Help on Kodi
by Stewart Channon 02 Feb '22

02 Feb '22

Trying to install full recording functionality with Ffmpeg on Kodi app installed on Firestick Brian S. Channon

2 1

An object oriented video notation
by Mark Filipak (ffmpeg) 01 Feb '22

01 Feb '22

During the past year, I've developed a set of true stream primitives that are object oriented (frames, pictures, ...), plus a notation to describe encodings and "mechanical" manipulations that are useful and that are fairly easy to read and understand. Can the notation be used as a frontend to FFmpeg? I don't know ...maybe. I have written 11 HTML documents to introduce the notation and to present some novel use-cases. 1, Preface (8 KiB) 2, Teasers (20 KiB) 3, Enhanced Terminology (25 KiB) 4, Reference (19 KiB) 5, Encoding Of DVD & Bluray Content (18 KiB) 6, About Audio (9 KiB) 7, Recovering The Camera Shots (3 KiB) 8, Basic Primitives (21 KiB) 9, Pulldown Primitives (14 KiB) 10, Advanced Interpolations (12 KiB) 11, Seen In The Wild (11 KiB) Writing the docs took a long time and lot of work. Is there any appetite here for them? Regards, Mark.

6 7

Patch fails to apply
by Bryce Newman 01 Feb '22

01 Feb '22

Hi, I am not sure why this patch is failing. https://patchwork.ffmpeg.org/project/ffmpeg/patch/93113E7F-9B7A-4423-9AD2-4… Can someone please advise on how to resolve “error: corrupt patch at line 10“? Thank you. Bryce Chester Newman | Principal Developer p: +12069255045 |

2 1

watch a folder for new images
by Michael Koch 01 Feb '22

01 Feb '22

Hello, is it possible to watch a folder for new images (like fileSystemWatcher in C#), and if a new image appears, then load it in FFmpeg? The question is for Windows. Very large PNG images (about 30 Megapixels) are written to the folder every 5 seconds. I want to load these images, extract the four corners, enlarge them by a factor 10, stack the four images together and show the result on the screen, until the next image appears. The filtering is no problem, the question is only how to watch the folder for new images. Michael

4 12