• Adobe After Effects Expressions

  Expression for letters to fade out randomly

  Posted by Emma Bayat on April 24, 2017 at 8:15 pm

  So Dan Ebberts kindly posted some code for letters to appear randomly by adding an opacity animator and setting the value to 0. Then adding an expression selector and deleting the range selector. Followed by adding this expression to Amount:

  revealTime = 3; // reveal over 3 seconds
  seedRandom(textIndex,true);
  myReveal = random(revealTime);
  if ((time-inPoint) < myReveal) 100 else 0

  (Link: https://forums.creativecow.net/thread/227/17643)

  I’ve now been asked to have the letters fade out randomly as well as fade in. I’m fairly new to expressions… Anybody have any ideas?

  Kevin Camp replied 9 years, 5 months ago 3 Members · 2 Replies
• 2 Replies

• 

  Dan Ebberts

  April 25, 2017 at 12:35 am

  I’d like to help, but your spec doesn’t have enough detail about exactly what needs to happen, timing, etc.

  Dan
• 

  Kevin Camp

  April 25, 2017 at 4:19 pm

  i think you can probably do this without an expression….

  • add an animator for opacity to the text layer and set the opacity property of that animator to 0.
  • twirl down range selector and then advanced and set random order to ‘on’.
  • keyframe the animator’s offset property from 0 to 100, and then from 100 to 0.

  Kevin Camp
  Art Director
  KCPQ, KZJO & KRCW

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