Expression to use markers to control opacity

[Luca Lange]

Hello,

I am not that familiar with AE expressions, so excuse the (probably) basic question.

I have two layers, layer 1 with a mask on it, layer 2 with markers on it.
How can I set the opacity of the mask on layer 1 to 0% (100% otherwise), for all frames for which layer 2 has markers?

Thanks,

Luca

[Dan Ebberts]

This should work:


m = thisComp.layer("Layer 2").marker;
v = 100;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (timeToFrames(m.key(n).time) == timeToFrames(time)){
v = 0;
}
}
v


Dan

[Luca Lange]

Exactly what I was looking for, thanks!