Code: Select all
-C K, --modular_colorspace=K
Color transform: -1 = default (try several per group, depending
on effort), 0 = RGB (none), 1-41 = fixed RCT (6 = YCoCg).
Note - if anyone wants an easy way to convert to JXL and keep Color Profile - https://github.com/JacobDev1/xl-converter