From the course: After Effects Apprentice: 09 Expressions
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Driven by sound - After Effects Tutorial
From the course: After Effects Apprentice: 09 Expressions
Driven by sound
One fun trick is to have sound appear to motivate, or move, your animations inside of a composition. Well, you can use expressions to help you do that. I'm going to go back to the Project panel and this time open up comp 08-Audio*starter where we have a speaker, we have a colorful background, and we have an audio track. I'm going to press 0 on the numeric keypad to queue up both the video and audio previews. (audio playing) Now expressions cannot directly access sound inside a layer. I'll type LL to reveal the audio waveform for that layer. However, there is a very handy keyframe assistant that can take that sound and create the keyframes for you. I'll go to Keyframe Assistant > Convert Audio to Keyframes. This looks at all your audio layers inside of composition and creates one null object-- remember, we said nulls make great master controls--and by pressing U to reveal keyframes, creates a stream of keyframe values that represent the loudness of the audio. Notice here where the…
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