Null objects don't have volume controls, but I'd like to control many audio layers in my timeline at once.
Anyone know of a way to adjust volume or toggle mute on a bunch of layers without having to precompose them?
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Sign up to join this communityAdd a Slider to your Null Object.
Alt-click on the stopwatch next to the one of the volume controls that you want to control.
This will open the Expressions box for the volume control, and a pick-whip icon will appear.
Some code will appear in the Expressions box, something like:
temp = thisComp.layer("Null 1").effect("Slider Control")("Slider");
[temp, temp]
The numbers on the volume control will turn pink to indicate that they are being controlled by an expression.
To do this to multiple audio tracks, just follow the same process.
Here is a screen shot to illustrate this: