[FFmpeg-trac] #6396(avformat:new): Wrong timestamps for raw flac streams

[FFmpeg]

#6396: Wrong timestamps for raw flac streams
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:  avformat
                Version:  git-       |               Keywords:  flac
  master                             |  regression
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 Raw flac streams show wrong timestamps since
 e1fcd3a007591193891df1095f5263e9e5e71958
 {{{
 $ ffmpeg -i fate-suite/svq3/Vertical400kbit.sorenson3.mov -write_header 0
 out.flac
 ffmpeg version N-86090-g376247a Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 7.1.0 (GCC)
   configuration:
   libavutil      55. 63.100 / 55. 63.100
   libavcodec     57. 96.100 / 57. 96.100
   libavformat    57. 72.101 / 57. 72.101
   libavdevice    57.  7.100 / 57.  7.100
   libavfilter     6. 89.101 /  6. 89.101
   libswscale      4.  7.101 /  4.  7.101
   libswresample   2.  8.100 /  2.  8.100
 Guessed Channel Layout for Input Stream #0.1 : mono
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'fate-
 suite/svq3/Vertical400kbit.sorenson3.mov':
   Metadata:
     creation_time   : 2001-03-20T16:17:18.000000Z
     title           : Vertical Online SV3 Demo
     title-eng       : Vertical Online SV3 Demo
     artist          : Logan Kelsey
     artist-eng      : Logan Kelsey
     copyright       : © Vertical Online 2001
     copyright-eng   : © Vertical Online 2001
     encoder         : Sorenson Video 3
     encoder-eng     : Sorenson Video 3
   Duration: 00:00:43.58, start: 0.000000, bitrate: 580 kb/s
     Stream #0:0(eng): Video: svq3 (SVQ3 / 0x33515653), yuvj420p(pc),
 320x240, 391 kb/s, 30.02 fps, 30 tbr, 600 tbn, 600 tbc (default)
     Metadata:
       creation_time   : 2001-03-20T16:17:18.000000Z
       handler_name    : Apple Alias Data Handler
       encoder         : Sorenson Video 3
     Stream #0:1(eng): Audio: adpcm_ima_qt (ima4 / 0x34616D69), 44100 Hz,
 mono, s16p, 176 kb/s (default)
     Metadata:
       creation_time   : 2001-03-20T16:17:18.000000Z
       handler_name    : Apple Alias Data Handler
 Stream mapping:
   Stream #0:1 -> #0:0 (adpcm_ima_qt (native) -> flac (native))
 Press [q] to stop, [?] for help
 [adpcm_ima_qt @ 0x33416c0] Multiple frames in a packet.
 Output #0, flac, to 'out.flac':
   Metadata:
     encoder         : Lavf57.72.101
     title           : Vertical Online SV3 Demo
     title-eng       : Vertical Online SV3 Demo
     artist          : Logan Kelsey
     artist-eng      : Logan Kelsey
     copyright       : © Vertical Online 2001
     copyright-eng   : © Vertical Online 2001
     Stream #0:0(eng): Audio: flac, 44100 Hz, mono, s16, 128 kb/s (default)
     Metadata:
       creation_time   : 2001-03-20T16:17:18.000000Z
       handler_name    : Apple Alias Data Handler
       encoder         : Lavc57.96.100 flac
 size=    2143kB time=00:00:43.57 bitrate= 403.0kbits/s speed= 301x
 video:0kB audio:2143kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.000000%
 }}}
 {{{
 $ ffmpeg -f flac -i out.flac -f null -
 ffmpeg version N-86090-g376247a Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 7.1.0 (GCC)
   configuration:
   libavutil      55. 63.100 / 55. 63.100
   libavcodec     57. 96.100 / 57. 96.100
   libavformat    57. 72.101 / 57. 72.101
   libavdevice    57.  7.100 / 57.  7.100
   libavfilter     6. 89.101 /  6. 89.101
   libswscale      4.  7.101 /  4.  7.101
   libswresample   2.  8.100 /  2.  8.100
 Input #0, flac, from 'out.flac':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Audio: flac, 44100 Hz, mono, s16
 Stream mapping:
   Stream #0:0 -> #0:0 (flac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf57.72.101
     Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s
     Metadata:
       encoder         : Lavc57.96.100 pcm_s16le
 size=N/A time=00:00:21.40 bitrate=N/A speed=1.93e+03x
 video:0kB audio:3753kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/6396>
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