[FFmpeg-trac] #7120(avcodec:new): Intel QSV: "QSV requires a fixed frame pool size" message is given on encoder initialization failure

FFmpeg trac at avcodec.org
Tue Apr 3 12:49:47 EEST 2018


#7120: Intel QSV: "QSV requires a fixed frame pool size" message is given on
encoder initialization failure
-------------------------------------+-----------------------------------
             Reporter:  Brainiarc7   |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  unspecified  |               Resolution:
             Keywords:  qsv          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------

Comment (by jkqxz):

 Use `-extra_hw_frames` to set an initial pool size.

 There are ideas about making this happen automatically, but the problem is
 that we don't have enough negotiation between components to know how big
 the pool should be - if it's feeding into a scaler then probably 2 or 3
 frames are sufficient, but if it's feeding into an encoder with lookahead
 enabled then you might need over 100.  As such, it's currently under user
 control.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7120#comment:2>
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