[FFmpeg-trac] #4437(avdevice:open): AVFoundation recording has consistent intermittent frame drops

[FFmpeg]

#4437: AVFoundation recording has consistent intermittent frame drops
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             Reporter:  LordHDL      |                    Owner:  mateo
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avdevice
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
  avfoundation bounty                |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by Correa):

 It's not just the video frames that has drops but the audio as well (see
 #4513), and then it's very noticeable. Been trying to find a solution to
 the problem for a week in a program using ffmpeg as a library and only
 applying this patch that I was able to hear intelligible audio.
 Unfortunately after the commit with support for raw video this patch
 doesn't apply cleanly anymore on top of HEAD.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4437#comment:46>
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