[FFmpeg-trac] #8948(undetermined:open): NVDEC fails on file: requires (29 + threads) surfaces; thus fails on >3 threads (was: CUDA decoder fails on certain files.)

FFmpeg trac at avcodec.org
Mon Aug 16 19:26:22 EEST 2021


#8948: NVDEC fails on file: requires (29 + threads) surfaces; thus fails on >3
threads
-------------------------------------+-------------------------------------
             Reporter:  ericbg       |                    Owner:  (none)
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by Balling):

 * summary:  CUDA decoder fails on certain files. =>
     NVDEC fails on file: requires (29 + threads) surfaces; thus fails on
     >3 threads

Comment:

 A mechanism to reduce amount of auto threads should be introduced so that
 this does not happen. This happens due to amount of reference frames in
 CABAC. I also found a very nice 16 CABAC frames example that was long time
 ago used here here:
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/8948#comment:4>
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