[FFmpeg-trac] #6971(undetermined:new): ffmpeg drops frames after deinterlacing

[FFmpeg]

#6971: ffmpeg drops frames after deinterlacing
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             Reporter:  CaryKnoop    |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  cuvid        |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by malakudi):

 Found a workaround! Adding -copyts parameter (and -r 50 on output) makes
 it work without dropping frames! And transcoded file seems to be OK, with
 video/audio sync. Why is this working?

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Ticket URL: <https://trac.ffmpeg.org/ticket/6971#comment:30>
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