[FFmpeg-trac] #2613(undetermined:new): Bad playback of mov samples containing pcm audio

[FFmpeg]

#2613: Bad playback of mov samples containing pcm audio
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:  git-       |  undetermined
  master                             |               Keywords:  mov desync
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 The samples from ticket #2605 - http://samples.ffmpeg.org/ffmpeg-
 bugs/trac/ticket2605/ - can be transcoded with ffmpeg, and the transcoded
 files play identically / very similar as the original files with QuickTime
 on OSX and iOS.
 The samples play with ffplay showing massive desync / in slowmotion:
 {{{
 $ time ./ffplay audio_silence_after_ffmpeg_upgrade.mov
 ffplay version N-53705-g7de8a38 Copyright (c) 2003-2013 the FFmpeg
 developers
   built on May 31 2013 10:40:55 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 34.100 / 52. 34.100
   libavcodec     55. 12.102 / 55. 12.102
   libavformat    55.  8.102 / 55.  8.102
   libavdevice    55.  2.100 / 55.  2.100
   libavfilter     3. 73.100 /  3. 73.100
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f74b4000920] STSZ sample size 1 invalid (too
 small), ignoring
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
 'audio_silence_after_ffmpeg_upgrade.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf55.7.100
   Duration: 00:00:15.60, start: 0.000000, bitrate: 1768 kb/s
     Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p,
 480x270 [SAR 1:1 DAR 16:9], 361 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc
     Metadata:
       handler_name    : DataHandler
     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 44100 Hz,
 stereo, s16, 1411 kb/s
     Metadata:
       handler_name    : DataHandler
   -0.03 A-V:-10.588 fd=   0 aq=15360KB vq=    0KB sq=    0B f=0/0

 real    0m11.193s
 user    0m2.764s
 sys     0m0.185s
 }}}
 This may be related to the missing timestamps when only playing audio:
 {{{
 $ time ./ffplay audio_silence_after_ffmpeg_upgrade.mov -vn -autoexit
 ffplay version N-53705-g7de8a38 Copyright (c) 2003-2013 the FFmpeg
 developers
   built on May 31 2013 10:40:55 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 34.100 / 52. 34.100
   libavcodec     55. 12.102 / 55. 12.102
   libavformat    55.  8.102 / 55.  8.102
   libavdevice    55.  2.100 / 55.  2.100
   libavfilter     3. 73.100 /  3. 73.100
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fd198000920] STSZ sample size 1 invalid (too
 small), ignoring
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
 'audio_silence_after_ffmpeg_upgrade.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf55.7.100
   Duration: 00:00:15.60, start: 0.000000, bitrate: 1768 kb/s
     Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p,
 480x270 [SAR 1:1 DAR 16:9], 361 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc
     Metadata:
       handler_name    : DataHandler
     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 44100 Hz,
 stereo, s16, 1411 kb/s
     Metadata:
       handler_name    : DataHandler
   -0.00 A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

 real    0m15.675s
 user    0m4.719s
 sys     0m0.734s
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2613>
FFmpeg <http://ffmpeg.org>
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