User Manual

2 To reveal the controls you’ll use to change how the key from Node 3 interacts with the
key from Node 2, double-click the Key Mixer node to select it.
3 Open the Key palette; a list of all input links that are connected to the Key Mixer
appears at the right.
The input list of the Key Mixer node
4 Within each list entry is the input name (Input Link 1, Input Link 2, etc.), a Matte control,
a Mask control, a gain parameter, and an offset parameter.
 To subtract Node 3’s key from that of Node 2: Turn on both the Key Input Matte button
and the Key Input Invert button for Input Link 2.
Turning on Matte and Invert for Input Link 2 to
Output Node 3 subtracted from Node 2
 To subtract Node 2’s key from that of Node 3: Turn on both the Key Input Matte button
and the Key Input Invert button for Input Link 1.
Turning on Matte and Invert for Input Link 1 to
Output Node 2 subtracted from Node 3
Chapter – 126 Combining Keys and Using Mattes 2871