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To adjust influence of a direction handle on an adjacent keyframe
Along with controlling the level of acceleration and deceleration, you can also extend the influence of a keyframe
outward or inward in relation to an adjacent keyframe. Influence determines how quickly the speed graph reaches
the value you set at the keyframe, giving you an additional degree of control over the shape of the graph. The
direction handle increases the influence of a keyframe value in relation to the neighboring keyframe when you drag
it toward the neighboring keyframe, and it decreases the influence on the neighboring keyframe when you drag it
toward the center of its own keyframe.
In the Timeline panel, expand the outline for the keyframe you want to adjust.
1
2
Click the Graph Editor button and display the speed graph for the property.
Using the Selection tool, click a keyframe and drag the direction handle left or right.
3
Changing speed numerically
You may want to specify speed more precisely than you can by dragging direction 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-ins. For each, speed is expressed as described in the following table:
Keyframe type
Anchor Point and Position
Mask Shape
Mask Feather
Scale
Rotation
Opacity
To specify speed numerically
Display the speed graph for the keyframe you want to adjust.
1
2
Do one of the following:
•
Select the keyframe you want to edit, and then choose Animation > Keyframe Velocity.
•
Double-click the speed keyframe.
3
Type values for Incoming and Outgoing Velocity Speed.
Type values for the following options, and then click OK:
4
Specifies the amount of influence toward the previous keyframe (for incoming interpolation) or the next
Influence
keyframe (for outgoing interpolation).
Creates a smooth transition by maintaining equal incoming and outgoing velocities.
Continuous
Note: By default, the proportions of the current Scale or Mask Feather values are preserved as you edit the values. If you
don't want to preserve proportions, click the link icon next to the property values in the Timeline panel to remove the
icon.
Measurement of speed
Pixels per second
Units per second
Pixels per second for both the x (horizontal) and y
(vertical) dimensions
Percent per second for the x (horizontal), y (vertical),
and z (depth) dimensions
Degrees per second
Percentage per second
ADOBE AFTER EFFECTS 7.0
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