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

FFmpeg trac at avcodec.org
Mon Oct 22 14:08:42 EEST 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 oromit):

 ./ffmpeg -r 50 -c:v mpeg2_cuvid -deint adaptive -i ~/00001.ts -sn -an -qp
 22 -c:v h264_nvenc -y out.mkv

 Works fine for me on release/3.4, release/4.0 and master.

 Note the -r 50 as input option, for the file which is originally 25 fps.
 You need to manually specify that, as ffmpeg.c is not up to the challenge
 of changing the fps from inside of a decoder.

Ticket URL: <https://trac.ffmpeg.org/ticket/6971#comment:9>
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