Adobe After Effects Classroom in a Book (2020 release)

9 Using the Roto Brush Tool

Lesson overview

In this lesson, you’ll learn how to do the following:

• Extract a foreground object from the background using the Roto Brush tool.

• Correct the segmentation boundary across a span of frames.

• Touch up a matte with the Refine Edge tool.

• Freeze a matte across a clip.

• Animate properties for creative effects.

• Track a face in footage.

This lesson will take about an hour to complete. If you haven’t already done so, download the project files for this lesson from www.adobepress.com/AfterEffectsCIB2020, following the instructions in the Getting Started section under “Accessing the lesson files and Web Edition ...