Adobe AFTER EFFECTS 5.5 Help Manual page 126

Adobe After Effects Help
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You can use Hold interpolation only for outgoing temporal interpolation (for the frames
following a keyframe). If you create a new keyframe following a Hold keyframe, the new
keyframe will use incoming Hold interpolation. See "Adjusting direction handles to create
curves and corners" on page 128.
Changing the interpolation method
You can apply and change the interpolation method for any property keyframe. Setting
different interpolation methods for different keyframes can create a more complex
appearance and add variety to your animations.
Change the interpolation method for a keyframe using the Keyframe Interpolation dialog
box, or change it directly on a Value graph or motion path. Before you use the Value graph
or motion path, note which kind of interpolation you want to change. Editing interpo-
lation on a Value graph affects only the temporal interpolation of a layer property. Editing
interpolation on a motion path affects only the spatial interpolation of a layer property.
For more information on using the Value graph, see "Controlling change through interpo-
lation" on page 122.
To change an interpolation method for a keyframe using the Keyframe Interpolation
dialog box:
1 In the Timeline window, select the keyframes you want to change.
2 Choose Animation > Keyframe Interpolation.
3 For Temporal Interpolation, choose one of the following options:
Current Settings preserves the interpolation values already applied to the selected
•
keyframes. Choose this option 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 apply a temporal interpolation
•
method using default values.
4 If you selected keyframes of a spatial layer property, choose one of the following
options for Spatial Interpolation (available only for Position, Anchor Point, Effect Point, and
3D Orientation keyframes):
Current Settings preserves the interpolation settings already applied to the selected
•
keyframes.
Linear, Bezier, Continuous Bezier, and Auto Bezier apply a spatial interpolation method
•
using default values.
5 If you selected keyframes of a spatial layer property, use the Roving menu to choose
how a keyframe determines its position in time, and then click OK:
Current Settings preserves the currently applied method of positioning the selected
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keyframes in time.
Rove Across Time smooths the rate of change through the selected keyframes by
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automatically varying their position in time, based on the positions of the keyframes
immediately before and after the selection. See "Creating smooth changes using roving
keyframes" on page 137.
Lock to Time keeps the selected keyframes at their current position in time. They stay in
•
place unless you move them manually.
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