[FFmpeg-trac] #979(swscale:open): Abnormal colorspace conversion of BGR -> YUV comparing the RGB variant

[FFmpeg]

#979: Abnormal colorspace conversion of BGR -> YUV comparing the RGB variant
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             Reporter:  natt        |                    Owner:  (none)
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  swscale
              Version:  git-master  |               Resolution:
             Keywords:  scale       |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by Balling):

 > using unscaled bgr24 -> yuv420p special converter

 Then why does +print_info not print this anymore?

 [swscaler @ 00000275e7aa00c0] bicubic scaler, from bgr24 to yuv420p using
 MMXEXT
 [swscaler @ 00000275e7aa00c0] using unscaled bgr24 -> yuv420p special
 converter


 >This is unfortunately also enshrined in multiple asm routines

 Cannot you just convert RGB to BGR first? x2 less speed, but maybe a hack
 can be found.
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Ticket URL: <https://trac.ffmpeg.org/ticket/979#comment:26>
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