Mute Audio at Markers Expression

[Stephen Dixon]

A little bit hard to understand what you’re asking. Maybe explain exactly what you want to do.

[Dustin Mans]

Turn the sound on and off with an expression, similar to triggering the Opacity on /off with markers.

[Andrei Popa]

I think you can use the same expressions, just replace 100 and 0 with 0,-192

m=thisComp.marker;
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
}
if (n > 0){
t = time - m.key(n).time;
if (Math.abs(t) <= 5*thisComp.frameDuration) 0 else -192
}else
value

if (marker.numKeys > 0){
m = marker.nearestKey(time);
t = m.time;
if (m.index%2){
ease(time,t,t+2*thisComp.frameDuration,0,-192)
}else{
ease(time,t,t+3*thisComp.frameDuration,-192,0)
}
}else{
value
}

[Stephen Dixon]

Those expressions you posted both do what you want, they turn the sound on and off with markers. But I’m guessing when you say on and off, maybe you want the sound to start at one marker and end at the other? If so use the second expression, but invert the logic—it currently turns the audio OFF if the current time is between two markers, so you want to do the opposite; turn the audio ON if the time is between two markers.

To invert the logic you could either swap the contents of the curly brackets (the two lines starting with ease…) or add a logical not to the if() using the javascript notation !. in other words, line 4 should be if(! m.index%2){

[Dustin Mans]

An error tells me the code needs to modified to be two dimensions?

[Filip Vandueren]

Ah yes, makes sense for L/R stereo audio

replace 0 and -192 with [0,0] and [-192,-192]

[Dustin Mans]

Thanks they are working!

How to edit this expression to use comp markers instead of the layer markers?

if (marker.numKeys > 0){
m = marker.nearestKey(time);
t = m.time;
if (m.index%2){
ease(time,t,t+2*thisComp.frameDuration,0,-192)
}else{
ease(time,t,t+3*thisComp.frameDuration,-192,0)
}
}else{
value
}