• Adobe After Effects Expressions

  A simple fade in/out expression

  Posted by Dmitry Yershov on November 10, 2012 at 1:14 pm

  Hi,

  I’m kind of a noob with Expressions, so can anyone help me with an expression that:

  1. Changes the layer’s opacity from 0 to 100 over 6 frames
  2. Then after exactly after 8 seconds the opacity changes from 100 to 0 over 6 frames

  Thanks!

  Dan Ebberts replied 13 years, 6 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  November 10, 2012 at 5:01 pm

  Something like this should work:

  
fadeTime = framesToTime(6);
if (time < inPoint+8)
linear(time,inPoint,inPoint+fadeTime,0,100)
else
linear(time,inPoint+8,inPoint+8+fadeTime,100,0);


  If you wanted the 8 seconds to not include the fade-in, then you could change the last line to this:

  linear(time,inPoint+8+fadeTime,inPoint+8+fadeTime*2,100,0);

  Dan

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