https://bugs.kde.org/show_bug.cgi?id=415371

--- Comment #5 from Jean-Baptiste Mardelle <j...@kdenlive.org> ---
I made a few tests regarding this issue. Problem seem to happen only if the
project's colorspace is different than the clip colorspace.
If you use a project matching your clips's profile (using a bt.601 colorspace),
it works as expected, the lut doesn't change the image.

However, when using a rec.709 color profile, adding the lut causes a color
shift. However, when applying another effect after the lut, like "Position and
Zoom" that is an rgb filter causing a yuv > rgb conversion, the colorshift is
gone and the clip colors match the original clip.

I am not sure if the problem is limited to clips using a full color range. So
the issue seems to lie somewhere in MLT, when converting full range clips in
bt.601 to rec.709, applying a LUT and exporting to YUV format.

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