From the course: After Effects Compositing: 4 Color Keying

Dividing the matte: Introduction

- I'm gonna throw out a metaphor for when shots get more complex, when there's more color spill, and when edge detail is a little more critical. Now, you wouldn't move out of your apartment by trying to carry all of the items in one load. If you did, you'd probably drop some things and you'd be pretty exhausted at the end. And you'd probably think it was not worth trying to do that. Similarly, with a complex green screen shot, you're better off trying to break it down into manageable portions rather than trying to get the whole thing in one pass. So in this section I'm gonna show you how to break the job down so that you're carrying more manageable amounts. Which is to say, breaking down the mat into smaller, more bite-sized sections that are easy to manage. The extra, little bit of trouble can save you a lot of trouble later in the process.

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