• Adobe After Effects Expressions

  sending submovies to frame (x) with expressions

  Posted by Mackill on November 11, 2006 at 2:05 pm

  Hi all,

  I have been having a lot of fun synching stuff to music, making them shrink, grow, exploder etc 😀

  now i have a question..

  if I want to make a sub-movie (am a flash-er, I guess that would be a composite in AE)jump to a certain frame based on an expression.. how would I do that?

  lets say the submovie has 60 frames.. and I want it to show frame 60 every time the music hits the highest point. (or 0 for the lowest.. and on and on).

  thanks for your time
  mac

  http://www.runboyrun.de
  http://www.new.soulonfire.de

  Dan Ebberts

  

  replied 19 years, 10 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  November 11, 2006 at 7:01 pm

  Assuming that you have already converted your audio to keyframes, you would enable Time Remapping for your movie and apply an expression like this to the Time Remap property:

  a = thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”);
  minAudio = 0;
  maxAudio = 20;
  minFrame = 0;
  maxFrame = 60;
  f = linear(a,minAudio,maxAudio,minFrame,maxFrame);
  f*thisComp.frameDuration;

  Adjust minAudio and maxAudio to match your audio levels.

  Dan

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