[FFmpeg-trac] #10972(avcodec:new): An FFmpeg decoding error caused by --constrained-intra in x265

[FFmpeg]

#10972: An FFmpeg decoding error caused by --constrained-intra in x265
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             Reporter:  ronifue      |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  decode       |               Blocked By:
  avcodec Hevc x265 mpv hw_decode    |
  h265                               |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 >(which I'm surprised about because it's often the hardware decoding that
 shows decoding errors

 Not really. HW decoder is reference and is bitperfect on NV12 and P010
 levels. There are some exceptions, where there are bugs in our parser (and
 yes, hevc_cuvid still NEEDS sw parser and bugs in sw parser cause failure
 in ffplay -vcodec hevc-cuvid, see #7799). There is like one bug I know
 where the bug appears to be in HW Nvidia chip, but then remember there is
 a driver there, driver bugs are real too.
 https://github.com/Nevcairiel/LAVFilters/issues/534
 And another bug in avc where there is still an issue with HW decoder, that
 needs to know the structure #9771
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Ticket URL: <https://trac.ffmpeg.org/ticket/10972#comment:2>
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