July 2019 - FFmpeg-trac - lists.ffmpeg.org

#7337(undetermined:new): FFmpeg not recognizing WebVTT subtitle stream from HLS playlist
by FFmpeg 26 May '25

26 May '25

#7337: FFmpeg not recognizing WebVTT subtitle stream from HLS playlist -------------------------------------+------------------------------------- Reporter: newsfanatic | Type: defect Status: new | Priority: normal Component: | Version: git- undetermined | master Keywords: | Blocked By: WebVTT,HLS,m3u8,playlist,subtitles | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: When trying to ingest an HLS playlist from an m3u8 endpoint online to an mkv container, the subtitle stream is not being picked up at all. I can confirm that all other audio and video streams are being recognized, whilst the subtitle stream is not. I can also confirm that WebVTT is listed as a supported subtitle codec from ```ffmpeg -codecs```. Specifying ```-map 0``` also fails to pick up the subtitle stream. Am I just forgetting a flag or option? How to reproduce: {{{ % ffmpeg -report -i https://ajo.prod.reuters.tv/rest/v2/xato/playlist/assets/57630,163881,16382… -c copy reuters.mkv ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers built with Apple LLVM version 9.0.0 (clang-900.0.39.2) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.0.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable- avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma libavutil 56. 14.100 / 56. 14.100 libavcodec 58. 18.100 / 58. 18.100 libavformat 58. 12.100 / 58. 12.100 libavdevice 58. 3.100 / 58. 3.100 libavfilter 7. 16.100 / 7. 16.100 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 1.100 / 5. 1.100 libswresample 3. 1.100 / 3. 1.100 libpostproc 55. 1.100 / 55. 1.100 }}} Subtitles are specified in the M3U8 manifest with the #EXT-X-MEDIA tag. M3U8 manifest: {{{ #EXTM3U #EXT-X-VERSION:4 #EXT-X-MEDIA:TYPE=SUBTITLES,GROUP- ID="subs",NAME="English",DEFAULT=YES,AUTOSELECT=YES,FORCED=NO,URI="https://ajo.prod.reuters.tv/rest/v2/captions/vtt/assets/57630,163881,163829…" #EXT-X-STREAM- INF:BANDWIDTH=360800,CODECS="mp4a.40.2,avc1.64000D",RESOLUTION=320x180,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM- INF:BANDWIDTH=499400,CODECS="mp4a.40.2,avc1.640015",RESOLUTION=512x288,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM- INF:BANDWIDTH=984500,CODECS="mp4a.40.2,avc1.64001E",RESOLUTION=640x360,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM- INF:BANDWIDTH=1490500,CODECS="mp4a.40.2,avc1.64001F",RESOLUTION=854x480,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM- INF:BANDWIDTH=2006400,CODECS="mp4a.40.2,avc1.64001F",RESOLUTION=960x540,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM- INF:BANDWIDTH=3020600,CODECS="mp4a.40.2,avc1.64001F",RESOLUTION=1024x576,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM- INF:BANDWIDTH=4021600,CODECS="mp4a.40.2,avc1.64001F",RESOLUTION=1280x720,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM- INF:BANDWIDTH=4998400,CODECS="mp4a.40.2,avc1.640028",RESOLUTION=1920x1080,SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… #EXT-X-STREAM-INF:BANDWIDTH=113300,CODECS="mp4a.40.2",SUBTITLES="subs" https://ajo.prod.reuters.tv/rest/v2/playlist/assets/57630,163881,163829,574… }}} WebVTT asset manifest: {{{ #EXTM3U #EXT-X-VERSION:4 #EXT-X-TARGETDURATION:96 #EXTINF:5.5666, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/57630 #EXT-X-DISCONTINUITY #EXTINF:4.4, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/163881 #EXT-X-DISCONTINUITY #EXTINF:4.9667, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/163829 #EXT-X-DISCONTINUITY #EXTINF:4.6333, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/57447 #EXT-X-DISCONTINUITY #EXTINF:2.3, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/127691 #EXT-X-DISCONTINUITY #EXTINF:2.3, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/127676 #EXT-X-DISCONTINUITY #EXTINF:65.2, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/163830 #EXT-X-DISCONTINUITY #EXTINF:2.3, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/127649 #EXT-X-DISCONTINUITY #EXTINF:95.7, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/163855 #EXT-X-DISCONTINUITY #EXTINF:5.0, no desc https://ajo.prod.reuters.tv/rest/v2/captions/vtt/asset/57635 #EXT-X-ENDLIST }}} Sample WebVTT blob: {{{ WEBVTT X-TIMESTAMP-MAP=MPEGTS:900000,LOCAL:00:00:00.000 1 00:00:00.370 --> 00:00:01.700 line:-3 You're watching Reuters TV. 2 00:00:02.790 --> 00:00:04.270 line:-3 Here are your top stories. }}} FFmpeg input report: {{{ Input #0, hls,applehttp, from 'https://ajo.prod.reuters.tv/rest/v2/xato/playlist/assets/57630,163881,16382…': Duration: 00:03:12.37, start: 10.000000, bitrate: N/A Program 0 Metadata: variant_bitrate : 360800 Stream #0:0: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 360800 Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 320x180 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 360800 Program 1 Metadata: variant_bitrate : 499400 Stream #0:2: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 499400 Stream #0:3: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 512x288 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 499400 Program 2 Metadata: variant_bitrate : 984500 Stream #0:4: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 984500 Stream #0:5: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 984500 Program 3 Metadata: variant_bitrate : 1490500 Stream #0:6: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 1490500 Stream #0:7: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 854x480 [SAR 1280:1281 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 1490500 Program 4 Metadata: variant_bitrate : 2006400 Stream #0:8: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 2006400 Stream #0:9: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 960x540 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 2006400 Program 5 Metadata: variant_bitrate : 3020600 Stream #0:10: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 3020600 Stream #0:11: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 3020600 Program 6 Metadata: variant_bitrate : 4021600 Stream #0:12: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 4021600 Stream #0:13: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 4021600 Program 7 Metadata: variant_bitrate : 4998400 Stream #0:14: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 4998400 Stream #0:15: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc Metadata: variant_bitrate : 4998400 Program 8 Metadata: variant_bitrate : 113300 Stream #0:16: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp Metadata: variant_bitrate : 113300 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/7337> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4448(avformat:new): Properly support cover art in ogg
by FFmpeg 22 May '25

22 May '25

#4448: Properly support cover art in ogg --------------------------------------+---------------------------------- Reporter: llogan | Owner: Type: defect | Status: new Priority: normal | Component: avformat Version: git-master | Keywords: ogg Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 --------------------------------------+---------------------------------- {{{ $ ./ffmpeg -i ../fate-suite/cover_art/cover_art.flac ../out.ogg ffmpeg version N-71319-g43b4342 Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) 20150304 (prerelease) configuration: --enable-gpl --disable-doc libavutil 54. 22.100 / 54. 22.100 libavcodec 56. 34.100 / 56. 34.100 libavformat 56. 29.100 / 56. 29.100 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 13.101 / 5. 13.101 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, flac, from '../fate-suite/cover_art/cover_art.flac': Metadata: RATING : 0 ALBUM : Ангелофрения ARTIST : Мельница TITLE : Дороги TRACKTOTAL : 11 TOTALTRACKS : 11 GENRE : Folk DATE : 2012 track : 2 Duration: 00:03:09.05, start: 0.000000, bitrate: 1 kb/s Stream #0:0: Audio: flac, 44100 Hz, stereo, s16 Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 350x350 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn, 90k tbc Metadata: comment : Other Output #0, ogg, to '../out.ogg': Metadata: RATING : 0 ALBUM : Ангелофрения ARTIST : Мельница TITLE : Дороги TRACKTOTAL : 11 TOTALTRACKS : 11 GENRE : Folk DATE : 2012 track : 2 Stream #0:0: Video: theora, none, q=2-31, 128 kb/s Metadata: comment : Other Stream #0:1: Audio: flac, 0 channels, 128 kb/s Stream mapping: Stream #0:1 -> #0:0 (mjpeg (native) -> ? (?)) Stream #0:0 -> #0:1 (flac (native) -> flac (native)) Encoder (codec theora) not found for output stream #0:0 }}} Of course if Theora is supported by the build then a Theora video stream will be outputted (90k frame rate in this case). Possibly related to #4442 since I assume the cover art mechanics would be similar: https://wiki.xiph.org/VorbisComment#Cover_art -- Ticket URL: <https://trac.ffmpeg.org/ticket/4448> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 15

#6091(avformat:new): support ds2 audio (dss pro audio) file format
by FFmpeg 03 May '25

03 May '25

#6091: support ds2 audio (dss pro audio) file format -----------------------------------+--------------------------------------- Reporter: vineet156 | Type: enhancement Status: new | Priority: normal Component: avformat | Version: git-master Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -----------------------------------+--------------------------------------- Summary of the bug: ffmpeg already supports dss audio file decoding. Please add support for ds2 as well, which is an improved version of dss and called "dss pro" How to reproduce: {{{ ffmpeg started on 2017-01-19 at 04:20:46 Report written to "ffmpeg-20170119-042046.log" Command line: ../bin/ffmpeg -report -i VoiceRec11.ds2 VoiceRec11.mp3 ffmpeg version N-83132-g9561de4 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609 configuration: --prefix=/home/ubuntu/ffmpeg_build --pkg-config- flags=--static --extra-cflags='-I/home/ubuntu/ffmpeg_build/include -static' --extra-ldflags='-L/home/ubuntu/ffmpeg_build/lib -static' --bindir=/home/ubuntu/bin --enable-libmp3lame libavutil 55. 43.100 / 55. 43.100 libavcodec 57. 73.100 / 57. 73.100 libavformat 57. 62.100 / 57. 62.100 libavdevice 57. 2.100 / 57. 2.100 libavfilter 6. 69.100 / 6. 69.100 libswscale 4. 3.101 / 4. 3.101 libswresample 2. 4.100 / 2. 4.100 Splitting the commandline. Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'. Reading option '-i' ... matched as input url with argument 'VoiceRec11.ds2'. Reading option 'VoiceRec11.mp3' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option report (generate a report) with argument 1. Successfully parsed a group of options. Parsing a group of options: input url VoiceRec11.ds2. Successfully parsed a group of options. Opening an input file: VoiceRec11.ds2. [file @ 0x3e5db40] Setting default whitelist 'file,crypto' [AVIOContext @ 0x3e66f60] Statistics: 1048576 bytes read, 0 seeks VoiceRec11.ds2: Invalid data found when processing input }}} A ds2 sample file is attached for testing. Also making a small donation to the project thank you, -- Ticket URL: <https://trac.ffmpeg.org/ticket/6091> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#5283(avcodec:new): Add bitstream filter to remove Closed Captions from h264
by FFmpeg 17 Apr '25

17 Apr '25

#5283: Add bitstream filter to remove Closed Captions from h264 ---------------------------------------+--------------------------------- Reporter: cehoyos | Owner: Type: enhancement | Status: new Priority: wish | Component: avcodec Version: git-master | Keywords: h264 cc Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 ---------------------------------------+--------------------------------- http://thread.gmane.org/gmane.comp.video.ffmpeg.user/61438/focus=61440 The sample from ticket #2885 contains Closed Captions, FFmpeg does not allow to remove them without reencoding. {{{ $ ffmpeg -i transformers.ts -vcodec copy out.h264 ffmpeg version N-78869-gdd2ea5c Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl libavutil 55. 19.100 / 55. 19.100 libavcodec 57. 27.101 / 57. 27.101 libavformat 57. 27.102 / 57. 27.102 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 38.100 / 6. 38.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 libpostproc 54. 0.100 / 54. 0.100 Input #0, mpegts, from 'transformers.ts': Duration: 00:01:59.29, start: 0.578456, bitrate: 9015 kb/s Program 1 Stream #0:0[0x1e1]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Stream #0:1[0x1e2]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 384 kb/s Output #0, h264, to 'out.h264': Metadata: encoder : Lavf57.27.102 Stream #0:0: Video: h264 ([27][0][0][0] / 0x001B), yuvj420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 29.97 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help frame= 3575 fps=0.0 q=-1.0 Lsize= 118242kB time=00:01:59.25 bitrate=8122.6kbits/s speed= 580x video:118291kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown }}} {{{ $ ffmpeg -i out.h264 ffmpeg version N-78869-gdd2ea5c Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl libavutil 55. 19.100 / 55. 19.100 libavcodec 57. 27.101 / 57. 27.101 libavformat 57. 27.102 / 57. 27.102 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 38.100 / 6. 38.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 libpostproc 54. 0.100 / 54. 0.100 [h264 @ 0x3a8c280] Stream #0: not enough frames to estimate rate; consider increasing probesize Input #0, h264, from 'out.h264': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (High), yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc At least one output file must be specified }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/5283> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 10

#6763(swscale:new): swscale: Out-of-bounds memory accesses
by FFmpeg 13 Apr '25

13 Apr '25

#6763: swscale: Out-of-bounds memory accesses ---------------------------------+--------------------------------------- Reporter: Gramner | Type: defect Status: new | Priority: normal Component: swscale | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ---------------------------------+--------------------------------------- Many assembly functions in swscale will read past the end of their input buffers which causes segfaults and/or bus errors if the buffer happens to be located near the end of a memory page and the next page is invalid. Aligning input buffers isn't even enough for formats like RGB24 (and requiring alignment would be a bad idea anyway since it wouldn't work with memory-mapped input files for example). Using swscale with x264 CLI seems to be a fairly consistent way to trigger such out-of-bounds crashes. This command line for example will cause segfaults in ff_rgb24ToY_avx(): ./x264 -o /dev/null --input-csp rgb --input-res 512x512 <any_input_file> If asm is disabled in swscale the problem goes away. -- Ticket URL: <https://trac.ffmpeg.org/ticket/6763> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 6

#4489(undetermined:new): mkv cropping
by FFmpeg 09 Apr '25

09 Apr '25

#4489: mkv cropping -------------------------------------+------------------------------------- Reporter: cehoyos | Owner: Type: | Status: new enhancement | Component: Priority: wish | undetermined Version: git- | Keywords: videolan master | mkv cropping Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 -------------------------------------+------------------------------------- (videolan ticket 13982) I will attach a sample that has cropping defined in its mkv headers. {{{ $ ffmpeg -i Matroska\ Crop_cut.mkv ffmpeg version N-71483-g8768f8f Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl libavutil 54. 22.101 / 54. 22.101 libavcodec 56. 34.100 / 56. 34.100 libavformat 56. 30.100 / 56. 30.100 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 14.100 / 5. 14.100 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, matroska,webm, from 'Matroska Crop_cut.mkv': Metadata: encoder : libebml v1.2.2 + libmatroska v1.3.0 creation_time : 2012-08-03 22:48:21 Duration: 00:03:42.12, start: 0.000000, bitrate: 92 kb/s Stream #0:0(eng): Audio: aac (LC), 44100 Hz, stereo, fltp (default) Stream #0:1: Video: h264 (High), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default) At least one output file must be specified }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/4489> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

1 7

#5641(avformat:new): Support WebVTT according to MKV specs
by FFmpeg 07 Apr '25

07 Apr '25

#5641: Support WebVTT according to MKV specs -------------------------------------+------------------------------------- Reporter: RiCON | Type: defect Status: new | Priority: normal Component: avformat | Version: git- Keywords: webvtt | master matroska | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- FFmpeg supports the D_WEBVTT/SUBTITLES flavor following WebM specs (http://www.webmproject.org/docs/container/) but not the recent S_TEXT/WEBVTT flavor added to Matroska spec (https://matroska.org/technical/specs/codecid/index.html) likely close to it being added to mkvtoolnix in https://github.com/mbunkus/mkvtoolnix/commit/c0c8ea01 . It should probably also be changed to mux WebVTT tracks as S_TEXT/WEBVTT, at least to Matroska so mkvtoolnix recognizes the track as valid subtitles. {{{ ffmpeg -i cut-vtt.mkv ffmpeg version N-80317-gff53b66-g9da27fb+1 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.0 (Rev1, Built by MSYS2 project) configuration: --enable-libx264 --enable-libvpx --enable-libopus --disable-postproc --disable-doc --disable-demuxer=asf --disable-ffplay --enable-gpl --disable-debug libavutil 55. 24.100 / 55. 24.100 libavcodec 57. 46.100 / 57. 46.100 libavformat 57. 38.100 / 57. 38.100 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 46.101 / 6. 46.101 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 [matroska,webm @ 000000038f2d1c60] Unknown/unsupported AVCodecID S_TEXT/WEBVTT. [matroska,webm @ 000000038f2d1c60] Could not find codec parameters for stream 3 (Subtitle: none): unknown codec Consider increasing the value for the 'analyzeduration' and 'probesize' options Input #0, matroska,webm, from 'cut-vtt.mkv': Metadata: encoder : libebml v1.3.3 + libmatroska v1.4.4 creation_time : 2016-06-14 12:56:53 Duration: 00:00:11.28, start: 0.000000, bitrate: 352 kb/s Stream #0:0: Video: vp9 (Profile 2), yuv420p10le(tv), 1280x720, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc (default) Metadata: BPS : 291322 BPS-eng : 291322 DURATION : 00:00:09.760000000 DURATION-eng : 00:00:09.760000000 NUMBER_OF_FRAMES: 234 NUMBER_OF_FRAMES-eng: 234 NUMBER_OF_BYTES : 355414 NUMBER_OF_BYTES-eng: 355414 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-06-14 12:56:53 _STATISTICS_WRITING_DATE_UTC-eng: 2016-06-14 12:56:53 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:1: Audio: opus, 48000 Hz, stereo, fltp (default) (forced) Metadata: BPS : 107013 BPS-eng : 107013 DURATION : 00:00:09.758000000 DURATION-eng : 00:00:09.758000000 NUMBER_OF_FRAMES: 488 NUMBER_OF_FRAMES-eng: 488 NUMBER_OF_BYTES : 130530 NUMBER_OF_BYTES-eng: 130530 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-06-14 12:56:53 _STATISTICS_WRITING_DATE_UTC-eng: 2016-06-14 12:56:53 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:2(eng): Subtitle: webvtt Metadata: title : FFmpeg BPS : 163 BPS-eng : 163 DURATION : 00:00:10.300000000 DURATION-eng : 00:00:10.300000000 NUMBER_OF_FRAMES: 5 NUMBER_OF_FRAMES-eng: 5 NUMBER_OF_BYTES : 211 NUMBER_OF_BYTES-eng: 211 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-06-14 12:56:53 _STATISTICS_WRITING_DATE_UTC-eng: 2016-06-14 12:56:53 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:3: Subtitle: none (default) Metadata: title : mkvmerge BPS : 0 BPS-eng : 0 DURATION : 00:00:00.000000000 DURATION-eng : 00:00:00.000000000 NUMBER_OF_FRAMES: 0 NUMBER_OF_FRAMES-eng: 0 NUMBER_OF_BYTES : 0 NUMBER_OF_BYTES-eng: 0 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-06-14 12:56:53 _STATISTICS_WRITING_DATE_UTC-eng: 2016-06-14 12:56:53 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES At least one output file must be specified }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/5641> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#6949(undetermined:new): No support for multiple values in ID3v2.4 tags.
by FFmpeg 06 Apr '25

06 Apr '25

#6949: No support for multiple values in ID3v2.4 tags. -------------------------------------+------------------------------------- Reporter: | Type: defect escapereality | Priority: normal Status: new | Version: Component: | unspecified undetermined | Blocked By: Keywords: ID3 FFprobe | Reproduced by developer: 0 libavformat | Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Altough ''FFmpeg'' states that it has support for ID3v2.4 tags, there is one thing I can't get to work properly. The [http://id3.org/id3v2.4.0-frames ID3v2.4 specifications] state the following: ''There may only be one text information frame of its kind in an tag. All text information frames supports multiple strings, stored as a null separated list, where null is represented by the termination code for the character encoding.'' When I separate the values in a tag with NULL-characters, the values should all be recognized (following the ID3v2.4 specs). However, when I use ''FFprobe'', it only shows the first value. For example [http://mutagen.readthedocs.io/en/latest/man/mid3v2.html mid3v2] shows the tags correctly. [[BR]] Below is (a snippet of) the output of both ''mid3v2'' and ''FFprobe'' with an example file. The '''TCON''' (genre) and '''TPE1''' (artist) contain multiple values. ''mid3v2:'' {{{ mid3v2 --list 01_Infinite_$Original_Mix$.mp3 IDv2 tag info for 01_Infinite_(Original_Mix).mp3 TALB=Infinite TBPM=150 TCON=Hardstyle / Test / Example / Hard Dance TDRC=2017 TIT2=Infinite (Original Mix) TPE1=B-Front / Second Artist Example TPE2=B-Front TPUB=Roughstate }}} ''FFmpeg:'' {{{ ffprobe 01_Infinite_$Original_Mix$.mp3 Input #0, mp3, from '01_Infinite_(Original_Mix).mp3': Metadata: title : Infinite (Original Mix) artist : B-Front album : Infinite date : 2017 genre : Hardstyle TBPM : 150 album_artist : B-Front publisher : Roughstate }}} ---- '''Verbose console output FFprobe''' {{{ ffprobe started on 2018-01-07 at 03:20:14 Report written to "ffprobe-20180107-032014.log" Command line: ffprobe -report "01_Infinite_(Original_Mix).mp3" ffprobe version 3.4.1 Copyright (c) 2007-2017 the FFmpeg developers built with gcc 7.2.1 (GCC) 20171128 configuration: --prefix=/usr --disable-debug --disable-static --disable- stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libass --enable-libbluray --enable-libfreetype --enable-libfribidi --enable- libgsm --enable-libiec61883 --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-shared --enable-version3 libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libavresample 3. 7. 0 / 3. 7. 0 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 [NULL @ 0x55a2b5dcdb20] Opening '01_Infinite_(Original_Mix).mp3' for reading [file @ 0x55a2b5dce520] Setting default whitelist 'file,crypto' [mp3 @ 0x55a2b5dcdb20] Format mp3 probed with size=131072 and score=51 id3v2 ver:4 flags:00 len:108428 [mp3 @ 0x55a2b5dcdb20] pad 576 1211 [mp3 @ 0x55a2b5dcdb20] Skipping 0 bytes of junk at 109482. [mp3 @ 0x55a2b5dcdb20] Before avformat_find_stream_info() pos: 109482 bytes read:131072 seeks:0 nb_streams:2 [mjpeg @ 0x55a2b5dd2480] marker=d8 avail_size_in_buf=94699 [mjpeg @ 0x55a2b5dd2480] marker parser used 0 bytes (0 bits) [mjpeg @ 0x55a2b5dd2480] marker=e0 avail_size_in_buf=94697 [mjpeg @ 0x55a2b5dd2480] marker parser used 16 bytes (128 bits) [mjpeg @ 0x55a2b5dd2480] marker=db avail_size_in_buf=94679 [mjpeg @ 0x55a2b5dd2480] index=0 [mjpeg @ 0x55a2b5dd2480] qscale[0]: 0 [mjpeg @ 0x55a2b5dd2480] marker parser used 67 bytes (536 bits) [mjpeg @ 0x55a2b5dd2480] marker=db avail_size_in_buf=94610 [mjpeg @ 0x55a2b5dd2480] index=1 [mjpeg @ 0x55a2b5dd2480] qscale[1]: 1 [mjpeg @ 0x55a2b5dd2480] marker parser used 67 bytes (536 bits) [mjpeg @ 0x55a2b5dd2480] marker=c0 avail_size_in_buf=94541 [mjpeg @ 0x55a2b5dd2480] Changing bps from 0 to 8 [mjpeg @ 0x55a2b5dd2480] sof0: picture: 600x600 [mjpeg @ 0x55a2b5dd2480] component 0 2:2 id: 0 quant:0 [mjpeg @ 0x55a2b5dd2480] component 1 1:1 id: 1 quant:1 [mjpeg @ 0x55a2b5dd2480] component 2 1:1 id: 2 quant:1 [mjpeg @ 0x55a2b5dd2480] pix fmt id 22111100 [mjpeg @ 0x55a2b5dd2480] marker parser used 17 bytes (136 bits) [mjpeg @ 0x55a2b5dd2480] marker=c4 avail_size_in_buf=94522 [mjpeg @ 0x55a2b5dd2480] marker parser used 0 bytes (0 bits) [mjpeg @ 0x55a2b5dd2480] marker=c4 avail_size_in_buf=94489 [mjpeg @ 0x55a2b5dd2480] marker parser used 0 bytes (0 bits) [mjpeg @ 0x55a2b5dd2480] marker=c4 avail_size_in_buf=94397 [mjpeg @ 0x55a2b5dd2480] marker parser used 0 bytes (0 bits) [mjpeg @ 0x55a2b5dd2480] marker=c4 avail_size_in_buf=94367 [mjpeg @ 0x55a2b5dd2480] marker parser used 0 bytes (0 bits) [mjpeg @ 0x55a2b5dd2480] escaping removed 318 bytes [mjpeg @ 0x55a2b5dd2480] marker=da avail_size_in_buf=94314 [mjpeg @ 0x55a2b5dd2480] marker parser used 93996 bytes (751968 bits) [mjpeg @ 0x55a2b5dd2480] marker=d9 avail_size_in_buf=0 [mjpeg @ 0x55a2b5dd2480] decode frame unused 0 bytes [mp3 @ 0x55a2b5dcdb20] demuxer injecting skip 1105 / discard 0 [mp3 @ 0x55a2b5dd1620] skip 1105 / discard 0 samples due to side data [mp3 @ 0x55a2b5dd1620] skip 1105/1152 samples [mp3 @ 0x55a2b5dcdb20] All info found [mp3 @ 0x55a2b5dcdb20] After avformat_find_stream_info() pos: 162730 bytes read:163840 seeks:0 frames:51 Input #0, mp3, from '01_Infinite_(Original_Mix).mp3': Metadata: title : Infinite (Original Mix) artist : B-Front track : 1 album : Infinite date : 2017 genre : Hardstyle compilation : 0 TBPM : 150 album_artist : B-Front publisher : Roughstate R128_ALBUM_GAIN : 0 R128_TRACK_GAIN : 0 CATALOGNUMBER : ROUGH082 REPLAYGAIN_ALBUM_PEAK: 1.000000 REPLAYGAIN_TRACK_PEAK: 1.000000 REPLAYGAIN_ALBUM_GAIN: -13.24 dB REPLAYGAIN_TRACK_GAIN: -13.24 dB iTunNORM : 0000525E 0000525E 0000CDEC 0000CDEC 00000000 00000000 00008000 00008000 00000000 00000000 Duration: 00:05:00.64, start: 0.025056, bitrate: 322 kb/s Stream #0:0, 50, 1/14112000: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s Metadata: encoder : Lavf Side data: replaygain: track gain - -13.240000, track peak - 0.000023, album gain - -13.240000, album peak - 0.000023, Stream #0:1, 1, 1/90000: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 600x600 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn, 90k tbc Metadata: comment : Cover (front) [AVIOContext @ 0x55a2b5dd6900] Statistics: 163840 bytes read, 0 seeks }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/6949> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4298(avfilter:new): zoompan filter creates shaky image
by FFmpeg 05 Apr '25

05 Apr '25

#4298: zoompan filter creates shaky image ----------------------------------+-------------------------------------- Reporter: slhck | Type: defect Status: new | Priority: normal Component: avfilter | Version: git-master Keywords: zoompan | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ----------------------------------+-------------------------------------- Summary of the bug: When using the `zoompan` filter and setting any x or y (or both) value, the effect is shaky and jerky. How to reproduce: {{{ ffmpeg -framerate 25 -loop 1 -i in.jpg -vf "zoompan=z='min(zoom+0.0015,1.4)':x=50:d=150" -t 6 -s 640x380 out.mp4 ffmpeg version N-69568-g21051af Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable- libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable- libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable- libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable- libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib libavutil 54. 18.100 / 54. 18.100 libavcodec 56. 21.102 / 56. 21.102 libavformat 56. 19.100 / 56. 19.100 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 9.103 / 5. 9.103 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 [mjpeg @ 0000000000342a60] ignoring invalid SAR: 540/409 Input #0, image2, from 'out.jpg': Duration: 00:00:00.04, start: 0.000000, bitrate: 3236 kb/s Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 640x360, 25 fps, 25 tbr, 25 tbn, 25 tbc File 'out.mp4' already exists. Overwrite ? [y/N] y [swscaler @ 0000000000307fe0] deprecated pixel format used, make sure you did set range correctly No pixel format specified, yuvj420p for H.264 encoding chosen. Use -pix_fmt yuv420p for compatibility with outdated media players. [libx264 @ 0000000004cf00a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [libx264 @ 0000000004cf00a0] profile High, level 3.0 [libx264 @ 0000000004cf00a0] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'out.mp4': Metadata: encoder : Lavf56.19.100 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc), 640x360, q=-1--1, 25 fps, 12800 tbn, 25 tbc Metadata: encoder : Lavc56.21.102 libx264 Stream mapping: Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264)) Press [q] to stop, [?] for help [swscaler @ 0000000004ca5f80] deprecated pixel format used, make sure you did set range correctly Last message repeated 1 times [swscaler @ 0000000004ca5f80] Warning: data is not aligned! This can lead to a speedloss [swscaler @ 0000000004ca5f80] deprecated pixel format used, make sure you did set range correctly Last message repeated 55 times [swscaler @ 0000000009502c80] deprecated pixel format used, make sure you did set range correctly Last message repeated 41 times [output stream 0:0 @ 00000000002cb160] 100 buffers queued in output stream 0:0, something may be wrong. [swscaler @ 0000000009502c80] deprecated pixel format used, make sure you did set range correctly Last message repeated 49 times [swscaler @ 0000000007cc2780] deprecated pixel format used, make sure you did set range correctly Last message repeated 1 times frame= 150 fps=107 q=-1.0 Lsize= 122kB time=00:00:05.92 bitrate= 168.6kbits/s video:119kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.158680% [libx264 @ 0000000004cf00a0] frame I:1 Avg QP:18.48 size: 13916 [libx264 @ 0000000004cf00a0] frame P:38 Avg QP:18.97 size: 1965 [libx264 @ 0000000004cf00a0] frame B:111 Avg QP:23.90 size: 296 [libx264 @ 0000000004cf00a0] consecutive B-frames: 1.3% 0.0% 0.0% 98.7% [libx264 @ 0000000004cf00a0] mb I I16..4: 13.4% 64.7% 22.0% [libx264 @ 0000000004cf00a0] mb P I16..4: 0.6% 1.6% 0.2% P16..4: 37.9% 10.8% 5.9% 0.0% 0.0% skip:43.1% [libx264 @ 0000000004cf00a0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 33.5% 0.3% 0.0% direct: 0.1% skip:66.0% L0:47.5% L1:51.4% BI: 1.2% [libx264 @ 0000000004cf00a0] 8x8 transform intra:65.9% inter:74.8% [libx264 @ 0000000004cf00a0] coded y,uvDC,uvAC intra: 50.9% 30.8% 5.7% inter: 2.8% 1.3% 0.0% [libx264 @ 0000000004cf00a0] i16 v,h,dc,p: 16% 37% 6% 42% [libx264 @ 0000000004cf00a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 24% 29% 2% 3% 3% 4% 3% 4% [libx264 @ 0000000004cf00a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 24% 15% 5% 7% 6% 6% 4% 4% [libx264 @ 0000000004cf00a0] i8c dc,h,v,p: 62% 21% 16% 2% [libx264 @ 0000000004cf00a0] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 0000000004cf00a0] ref P L0: 67.5% 6.2% 16.7% 9.6% [libx264 @ 0000000004cf00a0] ref B L0: 91.5% 6.8% 1.7% [libx264 @ 0000000004cf00a0] ref B L1: 95.3% 4.7% [libx264 @ 0000000004cf00a0] kb/s:161.96 }}} When `x` is not set, there is no shakiness (see correct output). Also mentioned here: * http://superuser.com/questions/873939/ffmpeg-how-to-zoomin-a-video-from- the-center?noredirect=1 * http://superuser.com/questions/776452/ffmpeg-create-zoompan-shaky-or- jittery -- Ticket URL: <https://trac.ffmpeg.org/ticket/4298> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#4907(avcodec:new): Support decoding animated WebP images
by FFmpeg 01 Apr '25

01 Apr '25

#4907: Support decoding animated WebP images ---------------------------------+--------------------------------------- Reporter: urvang | Type: enhancement Status: new | Priority: normal Component: avcodec | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ---------------------------------+--------------------------------------- Summary of the bug: Currently, FFmpeg can encode animated WebPs, but cannot decode them, which is inconvenient for users. Decoding animated WebPs right now generates "image data not found error" due to "unsupported chunk": https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/webp.c#L1504 How to reproduce: (example input image: https://www.gstatic.com/webp/animated/1.webp) {{{ % ffmpeg -i 1.webp 1.gif ffmpeg version N-75787-g1d4af04 Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04) configuration: --enable-libwebp libavutil 55. 2.100 / 55. 2.100 libavcodec 57. 4.100 / 57. 4.100 libavformat 57. 3.100 / 57. 3.100 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 10.100 / 6. 10.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.100 / 2. 0.100 [webp @ 0x3782940] image data not found [webp_pipe @ 0x3781360] decoding for stream 0 failed < Rest of the output truncated > }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/4907> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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