#3409: Impossible to transcode full range RGB videos with libx264, and keep full
range + proper colors
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Reporter: mzso | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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I encountered this while trying to transcode screencasted videos with
fraps or ut-video streams.
When using yuv444p pixel format I get washed out, too light videos.
"-color_range" has no affect.
People suggested: "-vf colormatrix=bt601:bt709" But it also doesn't have
an affect.
x264 itself has issues with RGB full range videos, if I use i444 with it I
also get improper output. But if I use "--output-csp rgb" it succeds in
encoding a proper output file, though with a large file size.
I can't even achieve this with ffmpeg because it doesn't let me use RGB
with libx264: "Incompatible pixel format 'rgb24' for codec 'libx264',
auto-selecting format 'yuv444p'"
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Ticket URL: <https://trac.ffmpeg.org/ticket/3409>
FFmpeg <https://ffmpeg.org>
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