[FFmpeg-trac] #3409(undetermined:reopened): Impossible to transcode full range RGB videos with libx264, and keep full range + proper colors

[FFmpeg]

#3409: Impossible to transcode full range RGB videos with libx264, and keep full
range + proper colors
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             Reporter:  mzso         |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Changes (by mzso):

 * status:  closed => reopened
 * resolution:  invalid =>


Comment:

 Looks like the colors are not right after all. If I use the colormatrix
 filter the result just gets worse. A lot of detail loss.

 -vcodec libx264 -preset slower -crf 18 -pix_fmt yuvj444p:
 http://screenshotcomparison.com/comparison/64322

 -vcodec libx264 -preset slower -crf 18 -pix_fmt yuvj444p -vf
 colormatrix=bt601:bt709:
 http://screenshotcomparison.com/comparison/64323

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Ticket URL: <https://trac.ffmpeg.org/ticket/3409#comment:10>
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