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

FFmpeg trac at avcodec.org
Fri Jun 9 23:54:42 EEST 2017


#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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Comment (by Djfe):

 someone just informed me, that the file I uploaded doesn't contain any
 information about which color matrix it conforms to.
 FFmpeg obviously guessed BT.709 since it's a full hd video.
 But in fact it was BT.601

 The only issue I can see here, is that FFmpeg has to guess the color
 matrix, but doesn't warn the user about that.

 But the original issue might be a different one, so don't close this, yet
 ;)

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Ticket URL: <https://trac.ffmpeg.org/ticket/3409#comment:20>
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