[FFmpeg-trac] #8379(avfilter:new): problem with h264_qsv, lookahead and scale_qsv

[FFmpeg]

#8379: problem with h264_qsv, lookahead and scale_qsv
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             Reporter:  phrancesco  |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  4.2         |               Resolution:
             Keywords:  qsv         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by phrancesco):

 Hi, I tried up to 800 frames, but nothing changes.
 I tried first with full HD, then I scaled down the source file to 640 to
 480, always same results.

 Here's GEM while doing nothing:

 23 objects, 544768 bytes
 0 unbound objects, 0 bytes
 23 bound objects, 544768 bytes
 1 purgeable objects, 4096 bytes
 10 mapped objects, 368640 bytes
 0 display objects (pinned), 0 bytes
 4294967296 [268435456] gtt total

 [k]contexts: 10 objects, 225280 bytes (0 active, 225280 inactive, 225280
 global, 0 shared, 0 unbound)


 Here's the not working commmandline:

 44 objects, 16154624 bytes
 0 unbound objects, 0 bytes
 44 bound objects, 16154624 bytes
 16 purgeable objects, 15364096 bytes
 11 mapped objects, 462848 bytes
 0 display objects (pinned), 0 bytes
 4294967296 [268435456] gtt total

 [k]contexts: 10 objects, 225280 bytes (0 active, 225280 inactive, 225280
 global, 0 shared, 0 unbound)


 Here's the working commandline:


 474 objects, 106700800 bytes
 28 unbound objects, 14798848 bytes
 277 bound objects, 33972224 bytes
 1 purgeable objects, 4096 bytes
 12 mapped objects, 557056 bytes
 0 display objects (pinned), 0 bytes
 4294967296 [268435456] gtt total

 [k]contexts: 18 objects, 585728 bytes (0 active, 585728 inactive, 585728
 global, 0 shared, 0 unbound)
 ffmpeg: 447 objects, 105934848 bytes (3641344 active, 50814976 inactive,
 1064960 global, 0 shared, 72728576 unbound)

 B.R.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8379#comment:2>
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