Boost or alter saturation.

The filter accepts the following options:

intensity

Set strength of boost if positive value or strength of alter if negative value. Default is 0. Allowed range is from -2 to 2.

rbal

Set the red balance. Default is 1. Allowed range is from -10 to 10.

gbal

Set the green balance. Default is 1. Allowed range is from -10 to 10.

bbal

Set the blue balance. Default is 1. Allowed range is from -10 to 10.

rlum

Set the red luma coefficient.

glum

Set the green luma coefficient.

blum

Set the blue luma coefficient.