#10839: incorrect YCoCg to RGB conversion in swscale
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Reporter: Connor Worley | Owner: (none)
Type: defect | Status: closed
Priority: wish | Component: swscale
Version: unspecified | Resolution: wontfix
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by Balling):
See my comment in https://trac.ffmpeg.org/ticket/9132#comment:2
>Identity (and YCgCo) are very different matrices, as the order of
operations are different (MatrixCoefficients 0 (Identity) or 8 (YCgCo) not
only use different equations for the full-to-limited range adjustment but
also perform the full-to-limited range adjustment before applying the
transfer matrix).
There is no point in implementing that, Chrome/Chromium implemented it and
so did Nvidia. See https://github.com/mpv-player/mpv/issues/4340
Mpv has much better code for this that just works. Ffplay uses SDL, that
cannot support it, see #8862
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Ticket URL: <https://trac.ffmpeg.org/ticket/10839#comment:6>
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