Chroma Key
RGB Keyer Only

Parameter Type
Global. For more information, see Global and Keyframeable Parameters.
Description
Use the Chroma Key parameters in the RGB Keyer effect to fine-tune the key effect.
Use of Controls
Gain
Softens the edge of the key, with a range from 0 to 100.

Soft (softness)
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.

Show Alpha
Displays the grayscale alpha channel used to apply the key effect to the foreground and background sources. Viewing the alpha channel directly allows you to examine problem areas of the key while making adjustments.

Spill
Suppresses the spill from the key color onto foreground objects that often occurs due to color reflection in the scene. The range is from 0 to 100.

Level
Controls transparency of the foreground elements against the key background.

Reverse
Inverts the key.

See Also
Key
Secondary Key
Key Color
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.