linear wipe with stroke

[Dan Ebberts]

How about using the beam effect with this expression for the beam’s Starting Point:

pct = effect(“Linear Wipe”)(“Transition Completion”);
x = width*pct/100;
[x,0]

And this for its Ending Point:

pct = effect(“Linear Wipe”)(“Transition Completion”);
x = width*pct/100;
[x,height]

You also need to set the beams length to 100%

Dan

[Filip Vandueren]

It gets a bit more difficult when you decide to rotate the angle or add softness etc.

Here’s an alternative without expressions:

-Linear Wipe
-Solid Composite: Set the color to the color of your border, But Set Opacity to 50%
– Minimax: Operation: Maximum, Radius: 8 (=border width), Channel=Alpha
– Alpha Levels: Input Black Level=128

Okay, now you can use the direction and even the feathering of the wipe to adjust the feathering of the border.

Also these 3 effects work together after any wipe, so you can use this to add a border to an iris wipe, a radial wipe, or even an animated mask. Basically everything that alters the alpha of the layer get’s a border. So this won’t work well on footage that allready has an alpha.

Come to think of it, you can achieve a very similar effect by just adding a Layer Styles -> Stroke, only without it responding to the feather.

[Manuel Lino]

As Filip Vandueren recomended, adding a Layer Styles -> Stroke worked out perfectly for me!

[Brie Clayton]

Thanks for the solve, Filip!