This is the most simple kind of wiggle. You just need to specify how fast (Frequency) and how much (Amplitude) it should wiggle and the iExpression then wiggles around the keyframed value. You cannot only apply it to positions of layers, but to any 1D, 2D, 3D or color property. Applied to the opacity of a layer, it causes a flickering, for example.

  • Frequency

    number of wiggles per second (i.e. how fast it wiggles)

  • Amplitude

    maximal size of the wiggle (i.e. how much it wiggles)

  • Advanced
    Octaves

    number of octaves of noise to add together. The more octaves the more detail is in the wiggle.

    Amplitude Multiply

    controls how fast the harmonics drop off

Basic Wiggle iExpression

by default applied to: 
position
can be applied to: 
1D properties
2D properties
3D properties
colors
iExpression Bundle: 
Download at aescripts.com

What are iExpressions?

iExpressions are After Effects expressions with an easy to use interface.

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