To Convert Audio To Keyframes - Adobe AFTER EFFECTS 7.0 Manual

Adds the same set of deviations to all dimensions.
All Dimensions The Same
Set Frequency to specify how many deviations (keyframes) per second After Effects adds to the selected
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keyframes. A low value produces only occasional deviations, while a high value produces more erratic results. A
value between 0 and 1 creates keyframes at intervals of less than one per second. For example, a value of 0.5 creates
one keyframe every 2 seconds.
7 Set Magnitude to specify the maximum size of the deviations. After Effects sets the specified magnitude to the
units of the selected property, so a value for one property may produce very different results in another property.
Click Apply and preview the results.
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9 If necessary, choose Edit > Undo The Wiggler to reset the keyframes, adjust the values for Frequency and
Magnitude, and then reapply The Wiggler.

To convert audio to keyframes

The Convert Audio To Keyframes keyframe assistant analyzes amplitude within the composition work area and
creates keyframes to represent the audio. This keyframe assistant creates a new layer called "Audio Amplitude" repre-
senting all audio sources in the composition, with three Expressions effects that contain the keyframes: Left Channel,
Right Channel, and Both Channels.
You can use the Convert Audio To Keyframes keyframe assistant, along with expressions, to link the changes in audio
amplitude to other layer properties, such as Scale or Opacity. For example, link the audio keyframes to the Scale
property of a layer to make the layer grow and shrink as the amplitude increases and decreases.
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Select the Timeline panel, and then choose Animation > Keyframe Assistant > Convert Audio To Keyframes.
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