This is via Todd Kopriva’s fine blog: After Effects Region of Interest. Want to learn about expressions? Check out these tutorials from Andrew Devis .
Posts Tagged ‘Expressions’
An introduction to After Effects expressions
Frederik Steinmetz gives an introduction to After Effects expressions at AE Tuts in the first of a series. This is beginner stuff so if you’ve zero experience this is a good place to start. Watch it here. Afterwards, if you just can’t wait for part two, you can visit MotionScript.com for more information or check out Harry Frank‘s expressions training title over at Toolfarm.
Deeper Modes of Expression, Part 8 posted

If you wanna be an AE Pro, dive into expressions!
Trish and Chris Meyer have been releasing a special chapter of their book Creating Motion Graphics with After Effects in what will ultimately be twelve installments of Deeper Modes of Expression. You can find these at their blog CMG Keyframes on the Pro Video Coalition. As the name implies this series really digs in deep and explores ways to help you make your comps dance in ways mere keyframes aren’t apt to allow easily. The eighth installment, Deeper Modes of Expression, Part 8: Going for a Loop, was posted yesterday.
Expression To Drop Every 10th Frame In After Effects by Brad Chmielewski
Brad Chmielewski, who I follow on Twitter has posted a new tutorial. I didn’t know this trick!
Expression To Drop Every 10th Frame In After Effects from Brad Chmielewski on Vimeo.
In this After Effects tutorial I show you how to add an expression to your footage that will drop every 10th frame. Here is the expression used;
f= timeToFrames();
p = Math.floor(f/1);
framesToTime(p*1.1)
For more information on expressions in After Effects check out aenhancers.com and the tutorials by Harry Frank over at graymachine.com.






