[FFmpeg-trac] #10839(swscale:reopened): incorrect YCoCg to RGB conversion in swscale

[FFmpeg]

#10839: incorrect YCoCg to RGB conversion in swscale
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             Reporter:  Connor       |                    Owner:  (none)
  Worley                             |
                 Type:  defect       |                   Status:  reopened
             Priority:  wish         |                Component:  swscale
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by haasn):

 The change is in this scenario:

 $ ./ffplay -v verbose -vf format=color_spaces=bt709 dice_ycg6.mov
 [ffplay_buffer @ 0x7f1458003200] w:800 h:600 pixfmt:yuv420p tb:1/15360
 fr:30/1 sar:0/1 csp:ycgco range:unknown
 [auto_scale_0 @ 0x7f1458004dc0] w:iw h:ih flags:'' interl:0
 [Parsed_format_0 @ 0x7f1458003c80] auto-inserting filter 'auto_scale_0'
 between the filter 'ffplay_buffer' and the filter 'Parsed_format_0'
 Impossible to convert between the formats supported by the filter
 'ffplay_buffer' and the filter 'auto_scale_0'

 It now correctly errors out.

 Or:

 $ ./ffplay -v verbose -vf format=rgb24 dice_ycg6.mov
 [Parsed_format_0 @ 0x7f3288003c00] auto-inserting filter 'auto_scale_0'
 between the filter 'ffplay_buffer' and the filter 'Parsed_format_0'
 Impossible to convert between the formats supported by the filter
 'ffplay_buffer' and the filter 'auto_scale_0'

 I will submit a patch for the second point, which would just require
 making ffplay request only formats it actually supports.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10839#comment:17>
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