Autodesk Combustion 4 Fundamentals Courseware

Using the Discreet Keyer

Lesson 35

In this lesson, use the Discreet Keyer to composite an actor onto a tropical sunset.

Overview

In 2, you made a composite using an image that had a defined alpha channel-a grayscale channel of the image in which white represents opacity and black represents transparency. In this lesson, use the Discreet Keyer to generate a matte to build a composite. A matte, like an alpha channel, is a grayscale version of a clip that defines opacity and transparency, except it is not a channel belonging to the footage used in alayer. Instead, it is an image process stored with the layer.

In this lesson:

• Use the Discreet ...