• Adobe After Effects Expressions

  Random point in loop

  Posted by Sam Pipes on September 24, 2009 at 4:39 pm

  I have a 20-second loop of various images appearing in sqquence. I want to use this same loop for a bunch of different security monitors. How do I use Time Remap to make it so that each iteration plays at a different point in the loop?

  Dan Ebberts

  

  replied 16 years, 7 months ago 2 Members · 3 Replies
• 3 Replies

• 

  Dan Ebberts

  September 24, 2009 at 5:20 pm

  Try this time remapping expression:

  loopLength = 20;
  seedRandom(index,true);
  preRun = random(loopLength);
  (time + preRun)%loopLength

  Dan
• 

  Sam Pipes

  September 24, 2009 at 8:08 pm

  That works grewat! One thing, though: are there any other options for the random seed? I keep getting three or four TVs showing the same image.
• 

  Dan Ebberts

  September 24, 2009 at 8:15 pm

  Just change the first parameter until you get something you like:

  seedRandom(101,true);

  Dan

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