Chapter 9. Keying
The word keying might conjure up images of a weather person on the evening news, or a shooting technique used in major motion pictures, but with After Effects, even the simplest, least-expensive project can take advantage of this technique.
Lesson overview
In this lesson, you’ll learn how to do the following:
Create a garbage mask.
Use the Color Difference Key effect to key an image.
Check an image’s alpha channel for errors in a key.
Use the Spill Suppressor effect to remove unwanted light spill.
Key out a background using the Keylight effect.
Adjust the contrast of an image using the Levels effect.
In this lesson, you will build a promotional ...
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