question about "Wave Warp" effect

Question

hi all, i have a layer added the "wave warp" effect, and i want it not just keep waving, i hope it can gradually start/stop waving , but on that "wave warp" panel i don't see the stopwatch that i can set the keyframe. do you know how i can do it?

thank you in advance.

Mylenium · Answer

Create a custom displacement map in a pre-comp and animate the parameters there, then reference it using the Displacement Map effect. A simple repeating black-white-black gradient will do for a sine wave. Wave Warp uses some odd rounding math to produce "clean" wave patterns and that likely is why things start to jump when you animate parameters in a certain way.

Mylenium

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