[FFmpeg-trac] #3615(ffmpeg:new): -y option affects audio/video skew during screen capture (alsa+x11grab)

[FFmpeg]

#3615: -y option affects audio/video skew during screen capture (alsa+x11grab)
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             Reporter:  grepfor  |                    Owner:
                 Type:  defect   |                   Status:  new
             Priority:  normal   |                Component:  ffmpeg
              Version:  2.2.1    |               Resolution:
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
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Comment (by grepfor):

 Add'l info, fwiw: I just upgraded to 2.2.2 from the Arch repos, and the
 problem still occurs.

 On my system, this issue is 100% reproducible, and the resulting a/v skew
 is extremely obvious, especially if you wait several seconds before
 responding to the ''Overwrite?'' query. So the effort required for a
 developer to attempt reproducing it on up-to-date git code should be on
 the order of 1-2 minutes, literally. Just cut-n-paste the script, remove
 -y, and pre-create a file called ofile.mkv so that ffmpeg asks about
 overwriting. I suspect you will see the problem immediately. If not, let
 me know.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3615#comment:4>
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