Setting, Selecting, And Deleting Keyframes; To Set A Layer Property Value In The Graph Editor; About Keyframes; Using Keyframes - Adobe AFTER EFFECTS 7.0 Manual

Note: If you are changing Anchor Point values, note that the anchor point's coordinates are relative to the Layer panel,
not the Composition panel.

To set a layer property value in the Graph Editor

A value graph in the Graph Editor displays the values for each keyframe and the interpolated values between
keyframes. When the value graph of a layer property is level, the value of the property is unchanged between
keyframes. When the value graph goes up or down, the value of a layer property increases or decreases between
keyframes.
A B C
Value graph
A. Keyframe B. A level value graph indicates unchanging values. C. A rising graph indicates increasing values. D. A falling graph indicates
decreasing values.
You can change layer property values by moving the points (keyframes) on the value graph up or down. For example,
you can increase a Rotation keyframe's value by dragging a keyframe marker on the Rotation property's value graph
higher up on the graph.
Note: Values for the Anchor Point, Mask Shape, Effect Point controls, 3D Orientation, and Position properties are
spatial, so they use speed graphs by default instead of value graphs.
In the Timeline panel, display a temporal property for a layer.
1
If necessary, click the Graph Editor button to enter Graph Editor mode.
2
3 If necessary, add a keyframe at the point in time you want the change to occur.
Drag the keyframe up or down to set a new value for the layer property.
4

Setting, selecting, and deleting keyframes

About keyframes

Keyframes are used to create and control animation, effects, audio properties, and many other kinds of change that
occur over time. A keyframe marks the point in time where you specify a value, such as spatial position, opacity, or
audio volume. Values between keyframes are interpolated. When you use keyframes to create a change over time, you
must use at least two keyframes—one for the state at the beginning of the change, and one for the new state at the
end of the change.

Using keyframes

To animate a property using keyframes, you must set at least two keyframes for that property. Otherwise, changes
that you make to the layer property remain in effect for the duration of the layer.
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