Key
Chroma Key and Luma Key Effects

Parameter Type
Global. For more information, see Global and Keyframeable Parameters.
Description
Selects the primary key color to be replaced by video. Available in both Chroma Key and Luma Key.
Use of Controls
Other Options button
Opens the Windows Color dialog box or Macintosh Color Picker for precise color selection. For more information, see Using the Windows Color Dialog Box and Using the Macintosh Color Picker.

Hue
Identifies the key color. The Hue parameter is measured as values on a color wheel ranging from 0 to 255. The start (0) and ending (255) values are both red.

Sat (saturation)
Specifies the amount or intensity of the color. Values range from 0 to 255, where 0 is no chrominance and 255 is a fully saturated color.

Lum (luminance)
Specifies the brightness of the color. Values range from 0 to 255, where 0 is black and 255 is full brightness or white.

Gain
Specifies how much of the foreground and the background video is displayed. Values range from 0 to 63. A Gain of 0 shows only the foreground. A Gain of 63 replaces all the foreground video with the background video.

Soft (softness)
Determines how the bordering colors along the edge of the key are processed in the effect. Colors that border the luminance or chroma specified for the key are displayed as a blend of the foreground and the background video. Values range from 0 to 63. The higher the Softness value, the more of the background video is blended in the border colors. Use the Soft slider to improve the appearance of the edges of the keyed areas.
See Also
Secondary Key
Spill SuppressionKey Color
Chroma Key
Matte Control
Color Correction

Some features described in Help are available only in Avid Xpress Pro or Avid Xpress DV. For more information about Avid Free DV go to
www.avid.com.