[FFmpeg-trac] #11490(avformat:new): [Regression] Audio silent for long MOV file

[FFmpeg]

#11490: [Regression] Audio silent for long MOV file
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             Reporter:  cgbug       |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mov         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  1           |
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Comment (by cgbug):

 The problem seems to be that the file has an invalid value in stsz atom
 for the PCM audio track.

 sample_size = 4
 sample_count = 399869600

 When multiplied this roughly equals the size of the audio track (1.5GB) as
 indicated by MediaInfo. So likely a bug in the writing app, which is
 Davince Resolve. Video has duration of 2H:18M.

 This high value for sample_count triggers the sanity check in
 mov_merge_tts_data, while it did not in older code due to size difference
 in structs (stts_data vs tts_data).

 I can make the file playable by adjusting sample_count to a lower value in
 mov_read_stsz.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11490#comment:5>
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