Motion 5 - Using Masks to Aid Keying Effects

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Using Masks to Aid Keying Effects

Keying is rarely a one-step process. Although adding a keying filter is the first step, there
is usually additional work that must be done to create a good key that retains detail
around the edge of your subject. You can use the mask tools and alpha channel filters
presented in this section to turn a decent key into a great one. For more information
about using Motion’s keying filters see




When using masks with keying, apply any masks after applying the keyer.


Chapter 20

Using Shapes, Masks, and Paint Strokes