[FFmpeg-trac] #9751(swscale:new): Incorrect YUV->RGB24 conversion results on IBM Power9

[FFmpeg]

#9751: Incorrect YUV->RGB24 conversion results on IBM Power9
-------------------------------------+-----------------------------------
             Reporter:  gciaparrone  |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  swscale
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by gciaparrone):

 Using the command

 {{{
 ffmpeg -s:v 64x64 -pix_fmt yuv420p -i black.yuv -frames:v 1 -vf zscale
 reblack1.png
 }}}

 outputs an image identical to reblack.png, so the problem persists. I
 think ffmpeg still re-routes the conversion to the swscale ALTIVEC-
 optimized code, since the command repeatedly prints

 {{{
 [swscaler @ 0x405049d0] [swscaler @ 0x40cae530] ALTIVEC: Color Space RGB24
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9751#comment:7>
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