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Set Channels
This effect copies channels from other layers to the red, green, blue, and alpha channels of
the current layer. For example, you can take the luminance of one layer and put it into the
color channel of the selected layer. All source layers are centered in the current layer. With
Best quality selected, any stretched layers are anti-aliased.
Use Stretch Layers to Fit to resize all other layers to the size of the layer to which Set
Channels is being applied.
Set Matte
This effect replaces the alpha channel (matte) of a layer with a channel from another layer
above it for the creation of traveling matte effects.The effect is intended only to provide
compatibility with projects created in earlier versions of After Effects that use the Set
Matte effect. It is easier and faster to create traveling mattes using a track matte. See
"Creating track mattes and traveling mattes" on page 164.
For more information, see the After Effects product section on Adobe's Web site.
Shift Channels
This effect replaces red, green, blue, and alpha channels in the image with other channels.
In Take (Channel) From, specify which channel to use as a source.
Note: You can use this effect to display the alpha channel for a layer if you set the RGB
channels to Alpha and set the alpha channel to Full.
Distort effects
Use these effects to geometrically distort an image.
A
A. Original B. Mirror C. Polar Coordinates
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