Animate with Audio in After Effects

A walkthrough of how to use music and sound files.

You’ll get loads of people telling you not to use audio in Adobe After Effects. That you should use Audition or another sound editor and Premiere Pro or other video editor. And yeah, you can do a lot more in those programs, but it’s also entirely possible to use AE with audio and create animations and motion graphics synchronised to music. And also as a really quick way to add sound effects to your VFX shots.

In this video, I cover adding audio files, using their waveform and using layer markers for visual cues. I also look at the audio Spectrum and Audio Waveform effects (found in the Generate category) which makes it super easy to get you voice on screen. We’ll look at the Keyframe Assistant’s Generate keyframes from Audio and then combining that with expressions to drive animations. And finally, how you can create a repeating sound effect, using the expression below, driven by layer markers.

Expression used

len = thisLayer.source.duration;
if(marker.numKeys > 0){
m = marker.nearestKey(time).index;
if(marker.key(m).time > time) m--;
if(m > 0){
mt = marker.key(m).time;
if(time < mt+len){
linear(time, mt, mt+len, 0, len);
}else 0
}else 0
} else value;

Published by ShiveringCactus

Tutorials and videos, mainly After Effects, but with some 3D and puppetry stuff too.

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