Previewing Transitions Before Rendering Them
If you have to render your transitions, it’s a good idea to preview complex transitions
first. You can preview transitions while you’re modifying them or any time before
To preview a transition, do one of the following:
Move the playhead in the Canvas, the Timeline, or the Transition Editor over a frame of
That frame of your transition is rendered and displayed in the Canvas, on your external
monitor, or both, depending on how your external video settings are configured.
Note: Make sure the Caps Lock key is not engaged. The Caps Lock key
Move the playhead in the Canvas or Timeline to a frame just before your transition,
then choose Mark > Play > Every Frame (or press Option-\ or Option-P).
Final Cut Pro plays every frame of your transition, although not in real time.