[FFmpeg-trac] #6492(undetermined:new): Intel QSV: "No device available for encoder" message is given

FFmpeg trac at avcodec.org
Tue Jun 27 18:22:11 EEST 2017

#6492: Intel QSV: "No device available for encoder" message is given
             Reporter:  alexpigment  |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  qsv, quick   |               Resolution:
  sync, intel, h264_qsv              |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by jkqxz):

 Sounds like you have a complex case for which we don't know the device but
 is working by internal automagic inside libmfx (assuming it actually did
 use hardware before).

 To explicitly make the device on Windows when multiple are present, you
 want something like:
 -init_hw_device dxva2=intel:N -init_hw_device qsv at intel
 where N is the index of the Intel graphics adapter for D3D9.

 Note that if you do not change any options then nothing has changed other
 than the appearance of the warning.  The warning is telling you that it
 may not be working with hardware (though apparently it is anyway in your
 setup by automagic inside the driver; it is just a warning after all) and
 that if you do anything trickier then it probably won't work because we
 don't know the device.

Ticket URL: <https://trac.ffmpeg.org/ticket/6492#comment:3>
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