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Chapter 10. Expressions > Muting Keyframes

Muting Keyframes

How many times have I heard someone wish for the ability to temporarily disable keyframes in After Effects? You can do this with just about the simplest expression it is possible to write. Not only is disabling keyframes useful when working with an element that is meant to be barely or only occasionally visible (say, one with a keyframed Opacity level below 10%), but you can also use this trick for any property that will let you set an expression. This method of applying expressions is so elementary, there is no excuse for anyone not to use it.

Consider the opacity example: You have an element that is flickering at low opacity, that is blinking, or that for some other reason has Opacity keyframes assigned. You don't want to lose these keyframes, but they prevent you from properly seeing the layer for setup.


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