[FFmpeg-trac] #10228(undetermined:new): Screen recording on Mac produces a skewed output video

FFmpeg trac at avcodec.org
Thu Mar 2 21:46:09 EET 2023

#10228: Screen recording on Mac produces a skewed output video
             Reporter:  zachog       |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Comment (by zachog):

 I'm not sure why it had a frame rate of 600fps.  I didn't specify that.
 The resolution of the machine is 1656x932.

 So after trying dozens of different settings with none of them working I
 found out that Mac has a built in screencapture application.  I gave that
 a try and found that it had the exact same skewed video problem so it
 seems like it is an OS/video driver problem rather than a ffmeg problem.
 This tool had an option to capture a subsection of the screen and I found
 that if I subtract 1 pixel from the height and width the capture works
 just fine.

 I'm not sure how you would detect if you were on a system with this issue
 but it would likely save your users a ton of grief if you were able to do
 the same when you encountered a system with this issue.
Ticket URL: <https://trac.ffmpeg.org/ticket/10228#comment:6>
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