colorcontrast

Adjust color contrast between RGB components.

The filter accepts the following options:

rc

Set the red-cyan contrast. Defaults is 0.0. Allowed range is from -1.0 to 1.0.

gm

Set the green-magenta contrast. Defaults is 0.0. Allowed range is from -1.0 to 1.0.

by

Set the blue-yellow contrast. Defaults is 0.0. Allowed range is from -1.0 to 1.0.

rcw

gmw

byw

Set the weight of each rc, gm, by option value. Default value is 0.0. Allowed range is from 0.0 to 1.0. If all weights are 0.0 filtering is disabled.

pl

Set the amount of preserving lightness. Default value is 0.0. Allowed range is from 0.0 to 1.0.