Adobe After Effects - Manual (Page 493)

scene with many subjects and a lot of detail.
Before applying the Cartoon effect, consider either setting the composition to a lower frame rate or using the Posterize Time effect on the layer
if you're trying to make a movie look like a cartoon. Consider that cartoons have much lower frame rates than live action footage.
Chris Meyer provides a video tutorial about the Cartoon effect in the After Effects CS4 New Creative Techniques series on the Lynda.com website.
Original layer based on video footage item
Cartoon effect applied with Render set to Fill
Cartoon effect applied with Render set to Edges
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