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

FFmpeg trac at avcodec.org
Sun Jul 10 22:48:16 EEST 2016

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

Comment (by LordHDL):

 I know this issue is on the back burner for now but I have some more
 information that might be helpful to you guys.  I have a couple recorded
 tests using Pixel Toy here: http://puu.sh/pX4FU/8119e38474.xz

 Included are the console outputs and screen shots that show the write
 speed during the screen capture as well as what my SSD is capable of.

 Now here's another tidbit that might be a factor.  I have an app called
 RefreshRate that displays the rate of the GPU currently selected.  I
 forget where I got it but I've uploaded it here:

 According to that, my AMD Radeon 6750M has a rate of 59.901460.  I'm not
 sure if this is playing a part but there it is just in case.

Ticket URL: <https://trac.ffmpeg.org/ticket/4437#comment:40>
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