#7864 closed defect (duplicate)
FFmpeg (possibly libavformat) seems not to write the correct duration when remuxing a FLAC file with seeking.
Reported by: | pbelkner | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | undetermined |
Version: | unspecified | Keywords: | |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
FFmpeg (possibly libavformat) seems not to write the correct duration when remuxing a FLAC file with seeking.
How to reproduce:
1.) Run FFmpeg on a FLAC file with option acodec set to copy and option ss set to e.g. 1:0 (one second), e.g.
peter@debian-9:~$ ffmpeg -i ~/aerosmith/1973_make_it/01_make_it.flac -acodec copy -ss 1:0 -y xx/01_make_it.flac ffmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516 configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/i386-linux-gnu --incdir=/usr/include/i386-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared libavutil 55. 34.101 / 55. 34.101 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.101 / 57. 56.101 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libavresample 3. 1. 0 / 3. 1. 0 libswscale 4. 2.100 / 4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 / 54. 1.100 Input #0, flac, from '~/aerosmith/1973_make_it/01_make_it.flac': Metadata: COMMENT : level: +4.00 dB, track: -0.86 dB, album: -1.22 dB ARTIST : Aerosmith ALBUM : Make It DATE : 1973 TITLE : Make It REPLAYGAIN_ALGORITHM: EBU R128 REPLAYGAIN_REFERENCE_LOUDNESS: -23 LUFS REPLAYGAIN_TRACK_GAIN: -10.3 LU REPLAYGAIN_TRACK_PEAK: 0.956400 REPLAYGAIN_ALBUM_GAIN: -10.1 LU REPLAYGAIN_ALBUM_PEAK: 0.987564 ENCODER : Lavf52.93.0 Duration: 00:03:41.00, start: 0.000000, bitrate: 853 kb/s Stream #0:0: Audio: flac, 44100 Hz, stereo, s16 Side data: replaygain: track gain - -10.300000, track peak - 0.000022, album gain - -10.100000, album peak - 0.000023, Output #0, flac, to 'xx/01_make_it.flac': Metadata: DESCRIPTION : level: +4.00 dB, track: -0.86 dB, album: -1.22 dB ARTIST : Aerosmith ALBUM : Make It DATE : 1973 TITLE : Make It REPLAYGAIN_ALGORITHM: EBU R128 REPLAYGAIN_REFERENCE_LOUDNESS: -23 LUFS REPLAYGAIN_TRACK_GAIN: -10.3 LU REPLAYGAIN_TRACK_PEAK: 0.956400 REPLAYGAIN_ALBUM_GAIN: -10.1 LU REPLAYGAIN_ALBUM_PEAK: 0.987564 encoder : Lavf57.56.101 Stream #0:0: Audio: flac, 44100 Hz, stereo (16 bit) Side data: replaygain: track gain - -10.300000, track peak - 0.000022, album gain - -10.100000, album peak - 0.000023, Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help size= 16736kB time=00:02:40.96 bitrate= 851.8kbits/s speed= 265x video:0kB audio:16728kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.050387% peter@debian-9:~$
2.) Even if FFmpeg claims that the result is one second shorter as the input (i.e. time=00:02:40.96) this is not written to the result:
peter@debian-9:~$ ffmpeg -i ~/aerosmith/1973_make_it/01_make_it.flac -acodec copy -ss 1:0 -y xx/01_make_it.flac ffmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516 configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/i386-linux-gnu --incdir=/usr/include/i386-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared libavutil 55. 34.101 / 55. 34.101 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.101 / 57. 56.101 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libavresample 3. 1. 0 / 3. 1. 0 libswscale 4. 2.100 / 4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 / 54. 1.100 Input #0, flac, from '~/aerosmith/1973_make_it/01_make_it.flac': Metadata: COMMENT : level: +4.00 dB, track: -0.86 dB, album: -1.22 dB ARTIST : Aerosmith ALBUM : Make It DATE : 1973 TITLE : Make It REPLAYGAIN_ALGORITHM: EBU R128 REPLAYGAIN_REFERENCE_LOUDNESS: -23 LUFS REPLAYGAIN_TRACK_GAIN: -10.3 LU REPLAYGAIN_TRACK_PEAK: 0.956400 REPLAYGAIN_ALBUM_GAIN: -10.1 LU REPLAYGAIN_ALBUM_PEAK: 0.987564 ENCODER : Lavf52.93.0 Duration: 00:03:41.00, start: 0.000000, bitrate: 853 kb/s Stream #0:0: Audio: flac, 44100 Hz, stereo, s16 Side data: replaygain: track gain - -10.300000, track peak - 0.000022, album gain - -10.100000, album peak - 0.000023, Output #0, flac, to 'xx/01_make_it.flac': Metadata: DESCRIPTION : level: +4.00 dB, track: -0.86 dB, album: -1.22 dB ARTIST : Aerosmith ALBUM : Make It DATE : 1973 TITLE : Make It REPLAYGAIN_ALGORITHM: EBU R128 REPLAYGAIN_REFERENCE_LOUDNESS: -23 LUFS REPLAYGAIN_TRACK_GAIN: -10.3 LU REPLAYGAIN_TRACK_PEAK: 0.956400 REPLAYGAIN_ALBUM_GAIN: -10.1 LU REPLAYGAIN_ALBUM_PEAK: 0.987564 encoder : Lavf57.56.101 Stream #0:0: Audio: flac, 44100 Hz, stereo (16 bit) Side data: replaygain: track gain - -10.300000, track peak - 0.000022, album gain - -10.100000, album peak - 0.000023, Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help size= 16736kB time=00:02:40.96 bitrate= 851.8kbits/s speed= 265x video:0kB audio:16728kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.050387% peter@debian-9:~$ peter@debian-9:~$ ffmpeg -i ./xx/01_make_it.flac ffmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516 configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/i386-linux-gnu --incdir=/usr/include/i386-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared libavutil 55. 34.101 / 55. 34.101 libavcodec 57. 64.101 / 57. 64.101 libavformat 57. 56.101 / 57. 56.101 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100 / 6. 65.100 libavresample 3. 1. 0 / 3. 1. 0 libswscale 4. 2.100 / 4. 2.100 libswresample 2. 3.100 / 2. 3.100 libpostproc 54. 1.100 / 54. 1.100 Input #0, flac, from './xx/01_make_it.flac': Metadata: comment : level: +4.00 dB, track: -0.86 dB, album: -1.22 dB ARTIST : Aerosmith ALBUM : Make It DATE : 1973 TITLE : Make It REPLAYGAIN_ALGORITHM: EBU R128 REPLAYGAIN_REFERENCE_LOUDNESS: -23 LUFS REPLAYGAIN_TRACK_GAIN: -10.3 LU REPLAYGAIN_TRACK_PEAK: 0.956400 REPLAYGAIN_ALBUM_GAIN: -10.1 LU REPLAYGAIN_ALBUM_PEAK: 0.987564 ENCODER : Lavf57.56.101 Duration: 00:03:41.00, start: 60.000363, bitrate: 620 kb/s Stream #0:0: Audio: flac, 44100 Hz, stereo, s16 Side data: replaygain: track gain - -10.300000, track peak - 0.000022, album gain - -10.100000, album peak - 0.000023, At least one output file must be specified peter@debian-9:~$
Change History (3)
comment:1 by , 6 years ago
comment:2 by , 6 years ago
Resolution: | → duplicate |
---|---|
Status: | new → closed |
Sounds like #4905.
For future tickets, please remember that only current FFmpeg git head is supported on this bug tracker.
comment:3 by , 6 years ago
1.) It is indeed a duplicate to #4905
2.) It, of course, also appears with git head.
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Above, second should, of course, read minute.