Converting 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" 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.

To convert audio to keyframes:

Select the audio layer in the Timeline window, and then choose Animation > Keyframe Assistant > Convert Audio to Keyframes.