[FFmpeg-trac] #7828(undetermined:new): gapless playback (probably) doesn't work with AAC

FFmpeg trac at avcodec.org
Thu Apr 4 02:33:45 EEST 2019


#7828: gapless playback (probably) doesn't work with AAC
-------------------------------------+-------------------------------------
             Reporter:  calestyo     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by calestyo):

 The used ffmpeg command line was already described in the text above, but
 again for reference:
 {{{
 ./ffmpeg -vn -i 02.split-track01.mp3 ffmpeg1125277.02.split-
 track01.mp3.wav
 ./ffmpeg -vn -i 02.split-track02.mp3 ffmpeg1125277.02.split-
 track02.mp3.wav
 ./ffmpeg -vn -i 03.split-track01.opus ffmpeg1125277.03.split-
 track01.opus.wav
 ./ffmpeg -vn -i 03.split-track02.opus ffmpeg1125277.03.split-
 track02.opus.wav
 ./ffmpeg -vn -i 04.split-track01.fdkaac.gapless-mode-0.m4a
 ffmpeg1125277.04.split-track01.fdkaac.gapless-mode-0.m4a.wav
 ./ffmpeg -vn -i 04.split-track02.fdkaac.gapless-mode-0.m4a
 ffmpeg1125277.04.split-track02.fdkaac.gapless-mode-0.m4a.wav
 ./ffmpeg -vn -i 05.split-track01.fdkaac.gapless-mode-1.m4a
 ffmpeg1125277.05.split-track01.fdkaac.gapless-mode-1.m4a.wav
 ./ffmpeg -vn -i 05.split-track02.fdkaac.gapless-mode-1.m4a
 ffmpeg1125277.05.split-track02.fdkaac.gapless-mode-1.m4a.wav
 ./ffmpeg -vn -i 06.split-track01.fdkaac.gapless-mode-2.m4a
 ffmpeg1125277.06.split-track01.fdkaac.gapless-mode-2.m4a.wav
 ./ffmpeg -vn -i 06.split-track02.fdkaac.gapless-mode-2.m4a
 ffmpeg1125277.06.split-track02.fdkaac.gapless-mode-2.m4a.wav
 ./ffmpeg -vn -i 07.split-track01.aac-enc.m4a ffmpeg1125277.07.split-
 track01.aac-enc.m4a.wav
 ./ffmpeg -vn -i 07.split-track02.aac-enc.m4a ffmpeg1125277.07.split-
 track02.aac-enc.m4a.wav
 ./ffmpeg -vn -i 08.split-track01.faac.m4a ffmpeg1125277.08.split-
 track01.faac.m4a.wav
 ./ffmpeg -vn -i 08.split-track02.faac.m4a ffmpeg1125277.08.split-
 track02.faac.m4a.wav
 }}}


 The console output of these is already in the list of files
 ​https://drive.google.com/drive/folders/1SIt1z3FtlYa-zMEDzF-m8jsMCe2PFsyz

 but I can copy&paste it here as well:
 {{{
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mp3, from '02.split-track01.mp3':
   Duration: 00:00:05.36, start: 0.025057, bitrate: 156 kb/s
     Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 156 kb/s
     Metadata:
       encoder         : LAME3.100
 Stream mapping:
   Stream #0:0 -> #0:0 (mp3 (mp3float) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.02.split-track01.mp3.wav':
   Metadata:
     ISFT            : Lavf58.26.101
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
     Metadata:
       encoder         : Lavc58.48.100 pcm_s16le
 size=     917kB time=00:00:05.32 bitrate=1411.3kbits/s speed= 316x
 video:0kB audio:916kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.008312%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mp3, from '02.split-track02.mp3':
   Duration: 00:00:10.61, start: 0.025057, bitrate: 143 kb/s
     Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 143 kb/s
     Metadata:
       encoder         : LAME3.100
 Stream mapping:
   Stream #0:0 -> #0:0 (mp3 (mp3float) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.02.split-track02.mp3.wav':
   Metadata:
     ISFT            : Lavf58.26.101
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
     Metadata:
       encoder         : Lavc58.48.100 pcm_s16le
 size=    1819kB time=00:00:10.55 bitrate=1411.3kbits/s speed= 350x
 video:0kB audio:1819kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.004188%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 [ogg @ 0x246b400] 657 bytes of comment header remain
 Input #0, ogg, from '03.split-track01.opus':
   Duration: 00:00:05.33, start: 0.000000, bitrate: 126 kb/s
     Stream #0:0: Audio: opus, 48000 Hz, stereo, fltp
     Metadata:
       ENCODER         : opusenc from opus-tools 0.1.10
       ENCODER_OPTIONS : --vbr --bitrate 96
 Stream mapping:
   Stream #0:0 -> #0:0 (opus (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.03.split-track01.opus.wav':
   Metadata:
     ISFT            : Lavf58.26.101
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
 stereo, s16, 1536 kb/s
     Metadata:
       ENCODER_OPTIONS : --vbr --bitrate 96
       encoder         : Lavc58.48.100 pcm_s16le
 size=     998kB time=00:00:05.32 bitrate=1536.1kbits/s speed= 163x
 video:0kB audio:998kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.007636%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 [ogg @ 0x2bb9400] 657 bytes of comment header remain
 Input #0, ogg, from '03.split-track02.opus':
   Duration: 00:00:10.57, start: 0.000000, bitrate: 122 kb/s
     Stream #0:0: Audio: opus, 48000 Hz, stereo, fltp
     Metadata:
       ENCODER         : opusenc from opus-tools 0.1.10
       ENCODER_OPTIONS : --vbr --bitrate 96
 Stream mapping:
   Stream #0:0 -> #0:0 (opus (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.03.split-track02.opus.wav':
   Metadata:
     ISFT            : Lavf58.26.101
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
 stereo, s16, 1536 kb/s
     Metadata:
       ENCODER_OPTIONS : --vbr --bitrate 96
       encoder         : Lavc58.48.100 pcm_s16le
 size=    1980kB time=00:00:10.55 bitrate=1536.1kbits/s speed= 170x
 video:0kB audio:1980kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.003847%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '04.split-track01.fdkaac.gapless-
 mode-0.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:17:22.000000Z
     encoder         : fdkaac 0.6.3, libfdk-aac 3.4.22, VBR mode 4
     iTunSMPB        :  00000000 00000C00 000005C6 000000000001CA3A
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
   Duration: 00:00:05.53, start: 0.069660, bitrate: 46 kb/s
     Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 44 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:17:22.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.04.split-track01.fdkaac.gapless-
 mode-0.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     iTunSMPB        :  00000000 00000C00 000005C6 000000000001CA3A
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     ISFT            : Lavf58.26.101
     Stream #0:0(und): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:17:22.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=     928kB time=00:00:05.45 bitrate=1393.3kbits/s speed= 279x
 video:0kB audio:928kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.008208%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '04.split-track02.fdkaac.gapless-
 mode-0.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:17:33.000000Z
     encoder         : fdkaac 0.6.3, libfdk-aac 3.4.22, VBR mode 4
     iTunSMPB        :  00000000 00000C00 00000281 0000000000038D7F
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
   Duration: 00:00:10.73, start: 0.069660, bitrate: 42 kb/s
     Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 40 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:17:33.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.04.split-track02.fdkaac.gapless-
 mode-0.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     iTunSMPB        :  00000000 00000C00 00000281 0000000000038D7F
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     ISFT            : Lavf58.26.101
     Stream #0:0(und): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:17:33.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=    1824kB time=00:00:10.65 bitrate=1402.0kbits/s speed= 217x
 video:0kB audio:1824kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.004176%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '05.split-track01.fdkaac.gapless-
 mode-1.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:18:03.000000Z
     encoder         : fdkaac 0.6.3, libfdk-aac 3.4.22, VBR mode 4
   Duration: 00:00:05.53, start: 0.000000, bitrate: 46 kb/s
     Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 44 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:03.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.05.split-track01.fdkaac.gapless-
 mode-1.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     ISFT            : Lavf58.26.101
     Stream #0:0(und): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:03.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=     920kB time=00:00:05.34 bitrate=1411.3kbits/s speed= 265x
 video:0kB audio:920kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.008280%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '05.split-track02.fdkaac.gapless-
 mode-1.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:18:10.000000Z
     encoder         : fdkaac 0.6.3, libfdk-aac 3.4.22, VBR mode 4
   Duration: 00:00:10.73, start: 0.000000, bitrate: 42 kb/s
     Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 40 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:10.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.05.split-track02.fdkaac.gapless-
 mode-1.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     ISFT            : Lavf58.26.101
     Stream #0:0(und): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:10.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=    1824kB time=00:00:10.58 bitrate=1411.3kbits/s speed= 212x
 video:0kB audio:1824kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.004176%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '06.split-track01.fdkaac.gapless-
 mode-2.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:18:28.000000Z
     encoder         : fdkaac 0.6.3, libfdk-aac 3.4.22, VBR mode 4
     iTunSMPB        :  00000000 00000C00 000005C6 000000000001CA3A
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
   Duration: 00:00:05.53, start: 0.000000, bitrate: 46 kb/s
     Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 44 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:28.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.06.split-track01.fdkaac.gapless-
 mode-2.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     iTunSMPB        :  00000000 00000C00 000005C6 000000000001CA3A
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     ISFT            : Lavf58.26.101
     Stream #0:0(und): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:28.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=     920kB time=00:00:05.34 bitrate=1411.3kbits/s speed= 268x
 video:0kB audio:920kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.008280%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '06.split-track02.fdkaac.gapless-
 mode-2.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:18:29.000000Z
     encoder         : fdkaac 0.6.3, libfdk-aac 3.4.22, VBR mode 4
     iTunSMPB        :  00000000 00000C00 00000281 0000000000038D7F
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
   Duration: 00:00:10.73, start: 0.000000, bitrate: 42 kb/s
     Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 40 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:29.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.06.split-track02.fdkaac.gapless-
 mode-2.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     iTunSMPB        :  00000000 00000C00 00000281 0000000000038D7F
 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
     ISFT            : Lavf58.26.101
     Stream #0:0(und): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:18:29.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=    1824kB time=00:00:10.58 bitrate=1411.3kbits/s speed= 214x
 video:0kB audio:1824kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.004176%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 [aac @ 0x28bb400] Estimating duration from bitrate, this may be inaccurate
 Input #0, aac, from '07.split-track01.aac-enc.m4a':
   Duration: 00:00:05.88, bitrate: 43 kb/s
     Stream #0:0: Audio: aac (HE-AACv2), 44100 Hz, stereo, fltp, 43 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.07.split-track01.aac-enc.m4a.wav':
   Metadata:
     ISFT            : Lavf58.26.101
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
     Metadata:
       encoder         : Lavc58.48.100 pcm_s16le
 size=     952kB time=00:00:05.52 bitrate=1411.3kbits/s speed= 278x
 video:0kB audio:952kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.008001%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 [aac @ 0x2a3b400] Estimating duration from bitrate, this may be inaccurate
 Input #0, aac, from '07.split-track02.aac-enc.m4a':
   Duration: 00:00:09.31, bitrate: 48 kb/s
     Stream #0:0: Audio: aac (HE-AACv2), 44100 Hz, stereo, fltp, 48 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.07.split-track02.aac-enc.m4a.wav':
   Metadata:
     ISFT            : Lavf58.26.101
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
     Metadata:
       encoder         : Lavc58.48.100 pcm_s16le
 size=    1848kB time=00:00:10.72 bitrate=1411.3kbits/s speed= 212x
 video:0kB audio:1848kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.004122%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '08.split-track01.faac.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:25:17.000000Z
     encoder         : FAAC 1.29.9.2
   Duration: 00:00:05.32, start: 0.000000, bitrate: 100 kb/s
     Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 98 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:25:17.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.08.split-track01.faac.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     ISFT            : Lavf58.26.101
     Stream #0:0(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:25:17.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=     920kB time=00:00:05.36 bitrate=1405.2kbits/s speed= 434x
 video:0kB audio:920kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.008280%
 ffmpeg version N-93527-g1125277 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
   configuration:
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 48.100 / 58. 48.100
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '08.split-track02.faac.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2019-04-03T16:25:30.000000Z
     encoder         : FAAC 1.29.9.2
   Duration: 00:00:10.56, start: 0.000000, bitrate: 97 kb/s
     Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 95 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:25:30.000000Z
 Stream mapping:
   Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, wav, to 'ffmpeg1125277.08.split-track02.faac.m4a.wav':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     ISFT            : Lavf58.26.101
     Stream #0:0(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s (default)
     Metadata:
       creation_time   : 2019-04-03T16:25:30.000000Z
       encoder         : Lavc58.48.100 pcm_s16le
 size=    1820kB time=00:00:10.58 bitrate=1408.2kbits/s speed= 492x
 video:0kB audio:1820kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.004185%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7828#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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