After Effects CS3 | Go to CS4 Help

Modify Bezier direction handles

In the Graph Editor, keyframes that use Bezier interpolation have direction handles attached to them. You can retract, extend, or rotate the direction handles to fine-tune the Bezier interpolation curve.

Retracting a direction handle makes a tighter, sharper Bezier curve. Extending a direction handle makes a larger, smoother Bezier curve. By default, when you retract or extend a direction handle, the opposite handle on the keyframe moves with it. Splitting direction handles makes the two direction handles attached to a keyframe behave independently.

To retract or extend direction handles, drag the direction handle toward or away from the center of its keyframe with the Selection tool.
To split direction handles, Alt-drag (Windows) or Option-drag (Mac OS) a keyframe with the Selection tool. You can also Alt-drag (Windows) or Option-drag (Mac OS) outside a keyframe to draw new handles, whether or not there are existing handles.
To manipulate the direction handles of two neighboring keyframes simultaneously, drag the value graph segment between the keyframes.
Modifying a Bezier direction handle

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Del Frost said on Apr 25, 2008 at 7:48 AM :

Correction to previous entry!! (Sorry)

With reference to THIS page:

http://livedocs.adobe.com/en_US/AfterEffects/8.0/WS3878526689cb916558
66c1103906c6dea-7d86.html

Headed:

Modify Bezier direction handles

The first sentence states:

In the Graph Editor, keyframes that use Bezier interpolation have direction
handles attached to them. You can retract, extend, or rotate the direction
handles to fine-tune the Bezier interpolation curve.

I have been unable to rotate handles in the graph editor. Is this entry wrong
or am I just not getting it?

Todd_Kopriva said on Apr 25, 2008 at 8:18 AM :

Here's what I did to test and make sure that you can rotate Bezier direction handles in the Graph Editor:

1. Press Ctrl+N to create a new composition.
2. Press Ctrl+Y to create a new sold-color layer.
3. Press Shift+F3 to switch to the Graph Editor.
4. Press Alt+Shift+S to add a keyframe to the Scale property.
5. Press Page Down to move the current-time indicator to the next frame.
6. Press Alt+Shift+S to add another keyframe to the Scale property.
7. Click the Convert Selected Keyframes To Auto Bezier button at the bottom of the Graph Editor.
8. Drag the Bezier direction handle around.

My guess is that you were trying to rotate Bezier handles in the speed graph, not the value graph. That's reasonable, since the picture above shows a speed graph. You can extend and retract (but not rotate) handles in the speed graph.

After Effects CS3 | Go to CS4 Help

Modify Bezier direction handles

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