• Adobe After Effects Expressions

  Basic AE expression – subtract average value from current value

  Posted by Danny Thompson on February 13, 2014 at 7:08 pm

  I’m looking to eliminate the jitter in a shot using a single point tracker. I am unsure of the syntax to use.

  I want to take the average value of the tracker over 5 frames and subtract the current x,y from that, so the x,y offset is for the jitter of the tracker only. How do I write this expression?

  Darby Edelen replied 12 years, 3 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Darby Edelen

  February 15, 2014 at 5:47 pm

  I think the smooth() method should do it for you:

  
width = framesToTime(5);
samples = 5;

  value.smooth(width, samples) - value;


  Darby Edelen

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