[FFmpeg-trac] #9799(avfilter:open): Rotate filter to 16-bit per channel image causes false color

[FFmpeg]

#9799: Rotate filter to 16-bit per channel image causes false color
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             Reporter:  hayamdk       |                    Owner:  (none)
                 Type:  defect        |                   Status:  open
             Priority:  important     |                Component:  avfilter
              Version:  git-master    |               Resolution:
             Keywords:  rotate ubsan  |               Blocked By:
             Blocking:                |  Reproduced by developer:  1
Analyzed by developer:  0             |
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Comment (by Balling):

 Tested. In fact this patch does not fix wrong black, but other than that
 it fixes everything. I suppose black is a separate issue, regression.

 >Black is 0,0,0

 Please attach, here is what happens on windows with this patch:


 https://0x0.st/opf6.tiff

 (maybe just compare sha256:
 039093F5F0B67EC089EC57CFC5B0CB9CE3D656C30C2110F94FFB72851586CEAA).
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Ticket URL: <https://trac.ffmpeg.org/ticket/9799#comment:30>
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