Chroma

Sets the Chroma upstream keyer. This is available on certain, older ATEM switchers such as the ATEM 1 M/E Production Studio 4K, ATEM Television Studio HD, and the ATEM 4 M/E Broadcast Studio 4K.

Message	Description	Arguments
/mixeffect/usk/chroma	Sets the Chroma upstream keyer. This is available on certain, older ATEM switchers such as the ATEM 1 M/E Production Studio 4K, ATEM Television Studio HD, and the ATEM 4 M/E Broadcast Studio 4K.	Multiple

Argument	Type	Description
Hue	Float	Float from 0 to 360.0.
Gain	Float	Float from 0 to 100.0.
ySuppress	Float	Float from 0 to 100.0.
Lift	Float	Float from 0 to 100.0.
Narrow	Integer	0 = False 1 = True
USK	Integer	One-based index of the Upstream Keyer. Default is 1.
M/E	Integer	One-based index of the Mix Effect Bus. Default is 1.