[FFmpeg-trac] #9569(avformat:new): spdifenc: Unusual frame timing (TrueHD)

[FFmpeg]

#9569: spdifenc: Unusual frame timing (TrueHD)
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             Reporter:  Mitzsch01    |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  spdif        |               Blocked By:
  regression                         |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 >Generally when I encounter this glitch, I can seek back 10 seconds and
 replay the same section without issue, which was still the case here.
 Because I was uncertain if I heard an error or a false positive due to the
 raucous sound effects of the scene, I replayed the scene 15-20 times in
 quick succession and was able to get the exact same glitch to happen! I
 included a live recording of what that presents as.

 Very interesting.  9 hours may mean this is drop frame timecode issue.
 Hmmm... You see drop frame timecode is used in TrueHD. Yet, DF is not
 30/1.001, it is only 29.97, that  means it still accumulates 1 frame every
 9 hours 15 minutes.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9569#comment:19>
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