[Andrew Sherman]

I’ve updated this now and it works nicely on things like opacity and separated position dimensions. I know how to update it to work for arrays (eg for scale), I just have not done that yet. However, When I try to run this easing script on something like keyframes on an effect slider, it gives me an error “undefined is not an object”. Do you know how I can get this to work for effect properties as well? It’s working correctly easing transform properties, but not effect properties.

// Get the selected properties
var selectedProperties = app.project.activeItem.selectedProperties;
// Define easing
var easeSlow = new KeyframeEase(0, 90);
// Loop through the selected properties
for (var i = 0; i < selectedProperties.length; i++) {
  // Get the selected keyframes on the property
  var selectedKeyframes = selectedProperties[i].selectedKeys;
  // Apply easing to each selected keyframe
  for (var j = 0; j < selectedKeyframes.length; j++) {
    var keyframeIndex = selectedKeyframes[j];
    selectedProperties[i].setTemporalEaseAtKey(keyframeIndex, [easeSlow], [easeSlow]);
  }
}

[Andrew Sherman]

Perfect – thank you!

[Andrew Sherman]

So I found how to apply an expression in After Effects using a shortcut.

You will need to use automation software to create a macro (performs multiple steps one after another), and control your shortcuts.

Automation software options

Mac: Soundflow (highly recommended), Keyboard Maestro, Stream Deck

Windows: Auto Hot Key, Stream Deck

These are the steps I included in my macro, on Mac:

– Manually select layer

– Press trigger (in my case it’s a stream deck button but it could be a customer keyboard shortcut)

Automated steps:

– Press S to show scale property

– Press Command Alt A (select the visible properties)

– Menu: Animation / Add expression (or use the shortcut)

– Use your automation software to paste a pre-defined expression into the expression area, which is now active

– Press numpad enter to exit the expression editor

So with a single button press, I can apply an expression.

Taking it further, you can make it so that you press a button, and a search option pops up, you type a few letters and then press enter to choose your desired expression, and then it gets applied once you select it. You will need to use an advanced automation platform like Soundflow to get that kind of functionality.

[Andrew Sherman]

Fantastic, thank you so much Dan

[Andrew Sherman]

Dan, I’m a long-time beneficiary of your wisdom on these forums, so just wanted to say thank you, and I’m also a user of some of your paid scripts on aescripts.

I’m trying to get this expression to work but I’m getting a syntax error (I think it’s the t = time line). Do you know how this might be resolved? I’m using latest AE CC.

I also wanted to know how I might use a different easing, like one of the other Penner easings (expo or bounce etc). Do I just change the calculation in the function with the relevant math?

// Penner easeInOutExpo

function easeInOut (t,b,c,d) {

if (t <= 0) return b;

if (t >= d) return b + c;

if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;

return c/2*((t-=2)*t*t*t*t + 2) + b;

}

var xstartVal = 500;

var ystartVal = 500;

var xendVal = 500;

var yendVal = 800;

var startDur = 0;

var endDur = 1.8;

t = time – (startDur + inPoint);

d = endDur – startDur;

y = easeInOut (t,ystartVal, yendVal – ystartVal, d);

x = easeInOut (t,xstartVal, xendVal – xstartVal, d);

[x,y];