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Chapter 13. Keyframe Interpolation > Adjusting Temporal Interpolation Numerical...

Adjusting Temporal Interpolation Numerically

If neither the speed nor velocity graph provide the precision you need, you can adjust speed and velocity numerically.

To change the speed or velocity numerically:

1.
Expand the layer outline to view the speed or velocity graph for an animated layer property.

2.
Select the keyframe you want to adjust (Figure 13.84).

Figure 13.84. Select the keyframe you want to adjust.


3.
Choose Animation > Keyframe Velocity, or press Shift-Command-K (Mac) or Shift-Ctrl-K (Windows) (Figure 13.85).

Figure 13.85. Choose Animation > Keyframe Velocity.


A Keyframe Velocity dialog box appears, displaying the property type you're adjusting (Figure 13.86).

Figure 13.86. A Keyframe Velocity dialog box appears.


4.
In the Keyframe Velocity dialog box, enter values for the incoming velocity and outgoing velocity.

The unit of measurement used by the velocity value depends on the property.

5.
In the Incoming Velocity section of the dialog box, enter a value for Influence.

This determines how much influence the previous keyframe's value exerts over the interpolated values. In the graph, it affects the length of the ease handle.

6.
In the Outgoing Velocity section of the dialog box, enter a value for Influence.

This determines how much influence the next keyframe's value exerts over the interpolated values.

To automatically maintain equal values for the Incoming and Outgoing Velocities, check Continuous.

7.
Click OK to close the Keyframe Velocity dialog box.


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