User Guide

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ADOBE AFTER EFFECTS 5.0
User Guide
3 To change the value of a keyframe at any time, double-click the keyframe icon to type
a different value.
To see the new value displayed next to the property name, position the current-time
marker on the keyframe.
Adding keyframes to a Value graph
The pen tools provide the most flexible way to change temporal properties in the Value
graph or a motion path. Editing with the pen tool is similar to modifying a path in a
drawing application such as Adobe Illustrator. For more information on using the pen
tools, see “Drawing a Bezier mask with the pen tool” on page 242.
For best results with the pen tool, you should understand how Bezier interpolation affects
the Value graph and the motion path. When you use Bezier interpolation on a graph or
path, you can control the shapes of corners, making them into smooth curves or angled
corners. See “Bezier temporal interpolation” on page 203.
To add a keyframe to a Value graph using the pen tool:
1 In the Timeline window, display a layer property containing at least one keyframe.
2 Click the triangle to the left of the property name to display the Value graph.
3 Select the pen tool ( ) from the toolbox.
4 In the Timeline window, move the pen tool over the time on the Value graph where
you want to add the new keyframe, and then click to add a new keyframe.
Factors affecting speed
After you create your keyframes and motion paths, you may want to make more precise
adjustments to the way the spatial coordinates or speed of a moving layer changes through
keyframes.
UG.book Page 211 Wednesday, February 21, 2001 12:05 PM