[FFmpeg-trac] #6677(avcodec:open): mpeg2 decoder always output some redundant dummy frames for interlace videos

[FFmpeg]

#6677: mpeg2 decoder always output some redundant dummy frames for interlace
videos
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             Reporter:  lizhong1008  |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  mpeg2video   |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by lizhong1008):

 I prefer to revert 99e07a4453732058df90885f80b3db3b4f37cb3c directly,
 since the sample clip ofinterlaced_mpeg2.bin is detected as wrong input
 and doesn't make ffmpeg crash right now.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6677#comment:5>
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