[FFmpeg-trac] #7330(avcodec:new): ffmpeg 4.0 fails to transcoding one 4k clip

[FFmpeg]

#7330: ffmpeg 4.0 fails to transcoding one 4k clip
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             Reporter:  applemax82  |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  qsv         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by lizhong1008):

 Though the error message remind some thing wrong in qsv encoder, actually
 it is an decoding issue: can't get the decoded frame successfully and then
 avctx->hw_frames_ctx is NULL in qsvenc_init_session, thus cause encoder
 device hasn't been initialized successfully.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7330#comment:3>
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