Adobe After Effects

Mattes

Let’s now bring our masked Beemo into our other comp. The easiest way to do this is with copy/paste.

• Select the Beemo.jpeg layer.
• Copy it with ⌘-C/Ctrl-C or Edit > Copy.
• Double-click the Computer-Layers composition in the Project panel.
• Paste Beemo into it with ⌘-V/Ctrl-V or Edit > Paste.
• Reposition and scale Beemo so she’s somewhat aligned in the frame of the computer screen.

Creating a Matte

What if I only want to see Beemo within the confines of the Screen layer? That’s a job for a matte, not a mask. A matte is similar to a mask in that it’s used to crop an image. However, a matte is a two-layer process. I’ll use the transparency ...