Adobe AFTER EFFECTS 5.5 Help Manual page 137

Adobe After Effects Help
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To adjust the influence of an ease handle on the previous or next keyframe:
1 In the Timeline window, expand the outline for the keyframe you want to adjust. Then
click the triangle to the left of the property to display the Speed graph or the Velocity
graph.
2 At the desired keyframe, drag the ease handle left or right.
Changing speed numerically
You may want to specify speed more precisely than you can by dragging ease handles. In
such cases, specify speed numerically in the Keyframe Velocity dialog box.
The exact options available in the dialog box vary depending on the layer property you
are editing, and may also vary for plug-in effects. For each, speed is expressed as follows:
Anchor Point and Position Pixels per second.
Mask Shape Units per second.
Mask Feather Pixels per second for both the x (horizontal) and y (vertical) dimensions.
Scale Percent per second for both the x (horizontal) and y (vertical) dimensions.
Rotation Degrees per second.
Opacity Percent per second.
To specify speed numerically:
1 Display the Speed graph for the keyframe you want to adjust.
2 Select the keyframe you want to edit.
3 Choose Animation > Keyframe Velocity.
4 Type values for Incoming and Outgoing Velocity Speed.
5 Type values for the following options, and then click OK:
Influence specifies the amount of influence toward the previous keyframe (for
•
incoming interpolation) or the next keyframe (for outgoing interpolation).
Continuous creates a smooth transition by maintaining equal incoming and outgoing
•
velocities.
Creating smooth changes using roving keyframes
Using the roving keyframe option in After Effects, you can easily create smooth movement
across several keyframes at once. Roving keyframes are keyframes that are not linked to
a specific time; their speed and timing are determined by adjacent keyframes. When you
change the position of a keyframe adjacent to a roving keyframe in a motion path, the
timing of the roving keyframe may change.
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Fine-tuning Animation
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