[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                |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by mateo):

 A patch has been sent to the mailing list [1], however it does not get rid
 of the issue but might help a bit. I beleive the issue is on the
 avfoundation side as the screen recording feature might not be in sync
 with the display (or the display compositor might not be able to stay at a
 constant 60fps ?).

 Can you try the patch and let me know if it improves a bit your issue ?
 ffmpeg will output a warning if a drop happens on the avdevice side.

 [1] http://ffmpeg.org/pipermail/ffmpeg-devel/2015-August/177845.html

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Ticket URL: <https://trac.ffmpeg.org/ticket/4437#comment:13>
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