Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 441

On Transparent replaces the original image with the scribble. On Original Image composites the scribble
Composite
on the original image. Reveal Original Image shows the original image through the scribble.
Stroke effect
The Stroke effect creates a stroke or border around a mask or along a Bezier path. You can also specify stroke color,
opacity, and spacing, as well as brush characteristics. Specify whether the stroke appears on top of the image, on a
transparent image, or if it reveals the original alpha channel. To use a path created in Illustrator, copy the path and
paste it into a layer in After Effects.
This effect works with 8-bpc color.
Original (top left), with mask (bottom left), and with effect applied (bottom right)
Specifies the edge quality of the stroke, between hard and soft.
Brush Hardness
Specifies the spacing between stroke segments.
Spacing
Specifies whether the stroke is applied to the original layer or to a transparent layer.
Paint Style
See also
"Fill effect" on page 425
Vegas effect
The Vegas effect generates running lights and other path-based pulse animations around an object. You can outline
just about anything, surround it with a number of lights or longer pulses, and then animate it to create the appearance
of lights chasing around the object.
This effect works with 8-bpc color.
What to base the stroke on: Image Contours or Mask/Path.
Stroke
If Image Contours is chosen from the Stroke menu, you specify what layer to take the image
Image Contours
contours from and how to interpret the input layer.
•
The layer whose image contours are used. High-contrast, grayscale layers, and alpha channels work
Input Layer
well and are easy to work with.
•
Inverts the input layer prior to creating the stroke.
Invert Input
AFTER EFFECTS CS3 435
User Guide