User Guide

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ADOBE AFTER EFFECTS 5.0
User Guide
Each temporal interpolation method appears as a specific icon, so you can immediately
see what kind of interpolation is applied to a keyframe. Press Ctrl (Windows) or
Command (Mac OS) as you click a keyframe icon to switch between Linear and Auto
Bezier interpolation. For information on each type of interpolation, see online Help.
Timeline keyframe icons A. Linear B. Linear in, Hold out
C. Auto Bezier D. Continuous Bezier or Bezier
Comparing interpolation methods
All interpolation methods provided by After Effects are based on the Bezier interpolation
method, which provides direction handles so that you can control the transitions between
keyframes. Interpolation methods that don’t use direction handles are constrained
versions of Bezier interpolation, and are convenient for certain tasks.
To learn more about how different temporal interpolation methods affect layer properties,
experiment by setting up at least three keyframes with different values for a temporal
property such as Rotation, and change the interpolation methods for all keyframes as
you view the Value graph in the Timeline window.
To learn more about how different spatial interpolation methods affect a motion path,
experiment by setting up three keyframes for Position with different values on a motion
path, and change the interpolation methods as you view the motion path in the Compo-
sition window. For more information, see “Determining where to set and modify
keyframes” on page 170 and “Adding keyframes to a Value graph” on page 211.
In the following descriptions of interpolation methods, the effect of each method is
described as if you had applied it to all the keyframes for a layer property. This is done to
clarify the examples. In practice, you can apply any available interpolation method to any
layer property keyframe.
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UG.book Page 201 Wednesday, February 21, 2001 12:05 PM