Of course the settings above are just a starting point. Try position.wiggle(5,10) for a film projector mis-registration effect or position.wiggle(50,50) for some violent camera shake > if you don’t want to see the edges of your layer and you don’t want to scale it beyond 100% don’t forget to render it out at a higher resolution before you comp it)įor added authenticity, you could also play around with expressions to get your artificial “hair in the gate” moving or make “fake film scratches” jump about. Try opacity.wiggle(10,50) for a faulty projector flicker effect, where 10 is frequency – changes per second, and 50 is the amplitude – the largest value the attribute will change.

To add an expression, with the relevant layer attribute highlighted select:Įven if you are new to expressions and scripting, there is still a lot you can do, with some very basic in built expressions.įor example you can use the wiggle expression to randomly effect the values of various layer attributes for different effects: After Effects uses JavaScript 1.2 for expressions, so if you’re pretty handy with ActionScript or JavaScript or the like, there’s a lot you can do within After Effects. But what you cannot do with flash is to take an “Action-Scripted” animation and render it to use in broadcast or film – with After Effects you can. One of the primary strengths of Flash is its ability to use scripting to calculate variables and attribute values on the fly, which keeps file sizes down and interactivity to a maximum. While its implementation may not be as strong or as easy as using Action Script in Flash 5, it has one critical advantage.

One of the most powerful and yet often under utilised additions to After Effects from version 5 onwards is the inclusion of expressions.

Wiggle expression opacity after effects