Adobe 65008009 - After Effects CS4 Using Manual page 242

Last updated 12/21/2009
Change interpolation method with the Keyframe Interpolation dialog box
The Keyframe Interpolation dialog box provides options for setting temporal and spatial interpolation and—for
spatial properties only—roving settings.
1 In layer bar mode or in the Graph Editor, select the keyframes you want to change.
Choose Animation > Keyframe Interpolation.
2
For Temporal Interpolation, choose one of the following options:
3
Preserves the interpolation values already applied to the selected keyframes. Choose this option
Current Settings
when multiple or manually adjusted keyframes are selected and you do not want to change the existing settings.
Linear, Bezier, Continuous Bezier, Auto Bezier, and Hold
4 If you selected keyframes of a spatial layer property, choose one of the following options for Spatial Interpolation:
Preserves the interpolation settings already applied to the selected keyframes.
Current Settings
Linear, Bezier, Continuous Bezier, and Auto Bezier
If you selected keyframes of a spatial layer property, use the Roving menu to choose how a keyframe determines its
5
position in time, and then click OK:
Preserves the currently applied method of positioning the selected keyframes in time.
Current Settings
Smooths the rate of change through the selected keyframes by automatically varying their position
Rove Across Time
in time, based on the positions of the keyframes immediately before and after the selection.
keeps the selected keyframes at their current position in time. They stay in place unless you move them
Lock To Time
manually.
For more information on smoothing the rate of change through selected keyframes, see
keyframes" on page 243.
Change interpolation method with the Selection tool in layer bar mode
❖
Using the Selection tool, do one of the following:
• If the keyframe uses Linear interpolation, Ctrl-click (Windows) or Command-click (Mac OS) the keyframe to
change it to Auto Bezier
• If the keyframe uses Bezier, Continuous Bezier, or Auto Bezier interpolation, Ctrl-click (Windows) or Command-
click (Mac OS) the keyframe to change it to Linear.
Change interpolation method in the Graph Editor
• Click the keyframe with the Convert Vertex tool
• Select one or more keyframes, and then click the Hold, Linear, or Auto Bezier button at the bottom of the screen to
change the interpolation method.
A
Interpolation buttons in the Graph Editor
A. Hold B. Linear C. Auto-Bezier
Apply a spatial interpolation method using default values.
.
B C
Apply a temporal interpolation method using default values.
to toggle between linear and Auto Bezier interpolation.
USING AFTER EFFECTS CS4
Animation and keyframes
"Smooth motion with roving
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