Time; To Automatically Ease Speed; To Use Exponential Scale (Pro Only); Time-Stretching - Adobe AFTER EFFECTS 7.0 Manual

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Select the keyframes you want to change and choose Animation > Keyframe Interpolation. Then choose Lock To
Time from the Roving menu.

To automatically ease speed

Although you can manually adjust the speed of a keyframe by dragging direction handles, using Easy Ease automates
the work.
After you apply Easy Ease, each keyframe has a speed of 0 with an influence of 33.33% on either side. When you ease
the speed of an object, for example, the object slows down as it approaches a keyframe, and gradually accelerates as
it leaves. You can ease speed only when coming into or out of a keyframe, or both.
In the Graph Editor or in layer bar mode, select a range of keyframes.
1
2 Do one of the following:
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Choose Animation > Keyframe Assistant > Easy Ease (to ease speed coming both into and out of selected
keyframes), Easy Ease In (to ease speed coming into selected keyframes), or Easy Ease Out (to ease speed coming
out of selected keyframes).
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Click the Easy Ease

To use Exponential Scale (Pro only)

You can simulate a realistic acceleration of a zoom lens when working with 2D layers by using Exponential Scale,
which converts linear scaling of a layer to exponential scaling. This is useful for creating a cosmic zoom, for example.
Zooming optically with a lens is not linear—the rate of change of scaling increases as you zoom. To simulate this
acceleration, Exponential Scale converts the velocity of the scaling to an exponential curve.
In layer bar mode or in the Graph Editor, hold down the Shift key and select starting and ending keyframes for
1
the scale property.
2 Choose Animation > Keyframe Assistant > Exponential Scale.
Note: Exponential Scale replaces any existing keyframes between the selected starting and ending keyframes.

Time

Time-stretching

Speeding up or slowing down a layer is known as time-stretching. When you time-stretch a layer, the audio file or the
original frames in the footage (and all keyframes that belong to the layer) are redistributed along the new duration.
Use this command only when you want the layer and all layer keyframes to change to the new duration.
Time-stretching a layer redistributes keyframes along the new duration.
If you time-stretch a layer so that the resulting frame rate is significantly different from the original frame rate, the
quality of motion within the layer may suffer. For best results when time-remapping a layer, use the Timewarp effect.
, Easy Ease In , or Easy Ease Out button located at the bottom of the Graph Editor.
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User Guide