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 interpolation 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 interpolation.
To change an interpolation method for a keyframe using the Keyframe Interpolation dialog box: - In the Timeline window, select the keyframes you want to change.
- Choose Animation > Keyframe Interpolation.
- 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.
- 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.
- 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 keyframes in time.
- Rove Across Time smooths the rate of change through the selected keyframes by 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.
- Lock to Time keeps the selected keyframes at their current position in time. They stay in place unless you move them manually.
To change an interpolation method directly in a window: - Display the Value graph in the Timeline window or the motion path in the Composition or Layer window.
- Using the selection tool, press Ctrl (Windows) or Command (Mac OS) as you click the keyframe marker you want to change. The interpolation method that the keyframe changes to depends on the current interpolation:
- If the keyframe uses Linear interpolation, it changes to Auto Bezier.
- If the keyframe uses Bezier, Continuous Bezier, or Auto Bezier, it changes to Linear.
Note: You can change interpolation methods directly for temporal keyframes in the Timeline window and for spatial keyframes in the Composition and Layer windows. A Linear keyframe (left) changes to Auto Bezier (right).
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