[FFmpeg-trac] #4550(undetermined:new): Overlaying VOBSUB from MKV sample while deinterlacing produces various timing oddities

[FFmpeg]

#4550: Overlaying VOBSUB from MKV sample while deinterlacing produces various
timing oddities
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             Reporter:  11rcombs     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by 11rcombs):

 Issue also occurs with kerndeint instead of yadif, which suggests this is
 either an overlay or lavfi problem.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4550#comment:4>
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