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Expression to use markers to control opacity
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
Edit: Reposted in AE expressions forum, sorry!
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1 Reply
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Try something like this, from Dan Ebberts:
L = thisComp.layer(“Control”);
if ((L.marker.numKeys > 0) && (numKeys > 2) && (time > key(2).time)){
t2 = key(2).time;
t3 = key(3).time;
tm = L.marker.key(1).time;
t = linear(time,t2,tm,t2,t3);
valueAtTime(t);
}else
valuehttp://www.YouTube.com/ShiveringCactus – Free FX for amateur films
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