[FFmpeg-trac] #4831(avcodec:reopened): Can't initialize h264_qsv encoder post Aug 29 2015 - Ivy Bridge CPU

[FFmpeg]

#4831: Can't initialize h264_qsv encoder post Aug 29 2015 - Ivy Bridge CPU
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             Reporter:  babgvant     |                    Owner:  IvUs
                 Type:  defect       |                   Status:  reopened
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  qsv          |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  1            |
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Comment (by IvUs):

 Replying to [comment:14 babgvant]:
 > I totally agree that flipping the min level recompiling isn't a good
 option. I think that (like every MSDK supporting app that I'm aware of)
 ffmpeg should query the MSDK level and selectively enable/configure
 features based on it (which might be what you're saying as well).
 Do you have an ability to revert QSV_VERSION_MINOR back to 9 or just take
 and compile latest ffmpeg sourcedrop but during test explicitly specify
 look_ahead=0 in the ffmpeg command line? Will such combination work on ivy
 bridge cpu?

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Ticket URL: <https://trac.ffmpeg.org/ticket/4831#comment:17>
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