Creating a split-screen effect

The one little gotcha is that the garbage matte effects reveal part of a clip -- they don't shrink the clip to fit it in the borders of the garbage matte, as happens when you use Motion to make PIPs.

gotcha: an unexpected usually disconcerting challenge, revelation, or catch; also : an attempt to embarrass, expose, or disgrace someone (as a politician) with a gotcha


Gotcha is a relaxed pronunciation of "I got you" or "I've got you" usually referring to an unexpected capture or discovery.