Apple Motion 4 - Manual (Page 1022)

Mix: Sets what percentage of the original image is blended with the keyed image.
HUD Controls
The HUD contains the following controls: Key, Color Level, Tolerance, Edge Thin, and
Invert Matte.
Color Key
This filter can pull a key based on any color you select. Bear in mind that if the color is
too close to that of the subject you’re trying to isolate, parts of your foreground subject
may disappear as well. The resulting effect renders the selected color transparent, allowing
a background image to show through.
Original image Color Key filter rendering gray transparent
Parameters in the Inspector
Color: Picks the color for your key. Use the disclosure triangle to display Red, Green, and
Blue sliders for more precise color selection.
Tolerance: Sets the color tolerance for your key.
Invert Matte: Sets whether or not the alpha channel of your color key is inverted.
Mix: Sets what percentage of the original image is blended with the keyed image.
HUD Controls
The HUD contains the following controls: Color, Tolerance, and Invert Matte.
1022 Chapter 16 Using Filters