[FFmpeg-trac] #7030(avcodec:open): qsv in ffmpeg

[FFmpeg]

#7030: qsv in ffmpeg
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             Reporter:  palich2000   |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  qsv          |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by lizhong1008):

 I've tried to reproduce it on ffmpeg-4.0 branch:
 ./ffmpeg -loglevel verbose -init_hw_device qsv=hw -i
 /samba/anonymous/Videos/bbb_sunflower_1080p_30fps_normal.mp4 -c:v h264_qsv
 -b:v 1000k test.mp4

 The transcoding pipeline didn't crash, but reported "Encoder will work
 with partial HW acceleration, Warning in encoder initialization: partial
 acceleration (4)". The transcoding speed was very slow (about 20 fps), and
 it shows the gpu usage is zero when use metrics_monitor to check GPU
 usage.
 It means software path was used instead of GPU accelerated.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7030#comment:18>
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