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

FFmpeg trac at avcodec.org
Wed Nov 14 17:10:15 EET 2018

#6971: ffmpeg drops frames after deinterlacing
             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

Comment (by cehoyos):

 Replying to [comment:15 malakudi]:
 > In case any dev is following this, I made some progress finding the root
 cause of the issue. -r 50 on output does not always make ffmpeg to drop
 frames with cuvid's deint adaptive enabled. It does drop frames if
 original input is encoded as MBAFF. If original input is encoded as PAFF,
 then -r 50 on output does NOT drop frames and works as expected.

 It is expected that behaviour wrt timebase is different for MBAFF (non-
 PAFF) and PAFF (including mixed PAFF and MBAFF) input.

Ticket URL: <https://trac.ffmpeg.org/ticket/6971#comment:17>
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