Set Multiview Window

Assigns a video source to a Multiview window.

Message	Description	Arguments
/mixeffect/multiview/window	Assigns a video source to a Multiview window.	Multiple

Argument	Type	Description
Window ID	Integer	One-based index that is the window id.
Source	Integer	Video source id.
Multiview ID	Integer	One-based index of the Multiview. Default is 1.

The sources available to the Multiview are greater than the other Video Source pickers. Look in Switcher Settings > Source Labels > All to see a list of possible values for your switcher.