[FFmpeg-trac] #4832(avcodec:new): Freeze when scaling and encoding h264_qsv

[FFmpeg]

#4832: Freeze when scaling and encoding h264_qsv
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             Reporter:  babgvant      |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  important     |                Component:  avcodec
              Version:  git-master    |               Resolution:
             Keywords:  qsv deadlock  |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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Comment (by babgvant):

 Added two attachments. One which shows initial progress (transcoding is
 working), then when it locks (ffmpeg spins at 13% progress stops
 changing).

 I don't know what a backtrace is or how I might obtain one.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4832#comment:2>
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