Apple Motion 3 - Manual (Page 925)

Chapter 10 Using Filters 925
An Example Using Primatte RT
Getting the basics down of using Primatte RT is easy. Here’s an example.
To create a simple composite using Primatte RT:
1 Import a background image into your project.
2 Import the foreground image for which a matte needs to be generated.
3 Select the foreground object, and turn off the background to directly observe the
filter’s effects.
4 Apply the Primatte RT filter to the object.