• Adobe After Effects

  Keyframing Expressions

  Posted by Anton Purr on May 12, 2012 at 9:47 pm

  Hi There,

  Does anyone know how to keyframe expressions? I’m not very well versed with them and am trying to figure out how to change the value of the Wiggle Expression in various points along a null position layer.

  Thanks in advance.

  Anton Purr replied 14 years ago 3 Members · 3 Replies
• 3 Replies

• 

  Dan Fredley

  May 12, 2012 at 10:27 pm

  Add a “Slider control” effect and then instead of typing numbers in the wiggle expression, pick whip the slider control value. Then you can keyframe the slider control. You can do this for both the frequency and amplitude.

  https://adobe.ly/Juv02D

  Dan Fredley
• 

  Matthew Keane

  May 12, 2012 at 10:51 pm

  Be careful when animating the frequency parameter though. If the frequency changes before the wiggle has finished a loop, things can get a bit jittery.
• 

  Anton Purr

  May 12, 2012 at 11:35 pm

  Thanks guys. I ended up just precomping my scene and splitting the layer while attaching it to different nulls in the end – but great to know for next time.

  cheers

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