5

Using the Edit Keyframes Tool
To use the following set of instructions, select the Edit Keyframes tool (above the Keyframe
Editor parameter list.
To add a keyframe
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Choose Add Keyframe from the Animation menu for any parameter to add a keyframe
at the position of the playhead.
To add a keyframe to an existing animation curve
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Double-click or Option-click the animation curve.
Curves created when keyframes are added are set to the interpolation method used by
the rest of that curve. For example, position channels default to using Bezier curves, so
new keyframes are added as Bezier keyframes. For more information on interpolation
methods, see Modifying Curves.
To add a keyframe to an animation curve and adjust its value
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Option-drag a curve segment.
A keyframe is added to the segment, and its value is displayed as you drag the keyframe.
To change the value of a keyframe
Do one of the following:
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In the graph area, drag the keyframe along the Y axis (up and down) to change its
parameter value. To change its position in time, drag along the X axis (left to right).
Press the Shift key while dragging to constrain movement to one axis.
Tip: Keyframes can also be constrained to the Y axis by turning on “Lock keyframes in
time in Keyframe Editor” in the Time pane of the Motion Preferences window.
609Chapter 12 Keyframes and Curves