[FFmpeg-trac] #9351(undetermined:open): bug in several windows builds when reencoding h.264 to h.265 with GPU

FFmpeg trac at avcodec.org
Tue Aug 3 23:23:17 EEST 2021


#9351: bug in several windows builds when reencoding h.264 to h.265 with GPU
-------------------------------------+-------------------------------------
             Reporter:  John Dury    |                    Owner:  Timo R.
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:  ffmpeg gpu   |               Blocked By:
  buffer                             |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Timo R.):

 There is unfortunately no way to automatically increase the number of
 allocated hw frames when somewhere down the chain something needs a higher
 buffer.
 That information is simply not available anywhere for the decoder.

 I have no idea why the driver fails with that specific error though, and I
 don't think this is fixable in ffmpeg, but rather is some kind of weird
 behaviour of the nvidia driver.

 If in doubt, throw a scale_cuda=passthrough=0 filter into the chain to
 take pressure of the decoder surface pool, at the expensive of more VRAM
 usage.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9351#comment:29>
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