in the timeline window: position the time marker at the point in time when you want the split to occur. select the layer you want to split. select the Edit/Split Layer menu.

How do I separate audio and video in After Effects?

How to detach audio in After Effects – Quora. . To unlink clips, select the clip or series of clips with Shift-click, then right-click and choose Unlink from the pop-up list.

Can I edit audio in After Effects?

Select your new layer, then go to Effect > Generate and select Audio Spectrum. In the Effect Controls window, change the Audio Layer to the music file you want the visualizer to use. From here, you can tweak the results or export this to a video in Premiere.