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

[FFmpeg]

#8948: NVDEC fails on file: requires (29 + threads) surfaces; thus fails on >3
threads
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             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            |
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Comment (by Balling):

 There is now a RFC patch here that sets threads to 1:
 https://patchwork.ffmpeg.org/project/ffmpeg/patch/20210929170134.29381-1-timo@rothenpieler.org/

 I do not agree since 1) qsv needs two threads or it will fail 2) threads
 do affect the speed, that part is false since h264 decoder is USED TO
 PARSE STUFF (do threads used for h264 affect hwaccel?)  3) There is a
 simpler patch above (did not check)
 https://patchwork.ffmpeg.org/project/ffmpeg/patch/20210810023754.2905-1-ameer.jalil6@gmail.com/
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Ticket URL: <https://trac.ffmpeg.org/ticket/8948#comment:6>
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