Chapter 25. Effects: Track Mattes

You want a video clip to play in the letters of your title. You know it will look very cool—but you don’t know how to do it. Look to Premiere Pro’s built-in keying effects for the answer: Composite the title and video together with the Track Matte Key effect.

Keying effects are a way to combine, or composite, elements of multiple images into one final image. Basically, you stack images on top of each other, then you identify specific elements of the top image to cut out using a matte or key so that images beneath can show through. The Track Matte Key effect uses an image’s alpha channel or luma (white) information to delineate the matte elements.

For the example, you would place the title in one video track and ...

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