The "Wobbly Keyframe" problem has been plaguing After Effects animators everywhere. greyscalegorilla made this short cast on how to get rid of the problem.

The Difference Matte effect creates a transparency a mask or a matte by comparing the pixels in a source layer with the pixel in a defined difference layer, and then keying out (eliminating) pixels in the source layer that match both the position and color in the difference layer.

In this tutorial, Aharon Rabinowitz shows you tips and techniques for creating interesting fire and water-based effects with your Artbeats footage.

This is a variation on the pendulum expression.

Keyframes were applied to Jack's position at frames 0 and 1 to move him out of the box