Manual

Chapter 55 Keying, Mattes, and Masks 813

Working With the Chroma Keyer Filter

Despite its name, the Chroma Keyer actually uses a combination of chroma and luma

keying to achieve a good key. Using the Chroma Keyer, you can create a key using any

range of color you want, including (but not limited to) the usual blue and green. You

can also fine-tune your composite by adjusting the color value, saturation, and

luminance ranges used to define your key, together or separately. For example, if you

only want to perform a luma key, you can disable color and saturation. Even when

performing a color key, you’ll get superior results by manipulating the Color Range and

Saturation controls separately.

The Chroma Keyer filter is available in the Key bin, within the Video Filters bin in the

Effects tab of the Browser. When you add this filter to a clip, a Chroma Keyer tab

appears in the Viewer.

Specifying the Type of Controls to Use for the Chroma Keyer Filter

The Chroma Keyer has a set of visual controls, as well as standard numeric interface

controls. The visual controls are those you’ll probably use most often, but you can

toggle between the two.

To use the visual controls:

m In the Filters tab, click the Visual button next to the Chroma Keyer filter.

The visual controls appear in the Chroma Keyer tab.

To use the standard numeric controls, do one of the following:

m In the Chroma Keyer tab, click the Numeric button.

m Click the Filters tab.

Visual Controls in the Chroma Keyer Filter

View Final/Matte/Source button

Color Range control

Enable/Disable checkbox

Reset button

Saturation control

Luminance control

Sliders for further adjustments

Select Color button

Invert Selection button