Creating new layers by splitting a layer

In the Timeline window, you can split a layer at any point in time, creating two independent layers. This is a time-saving alternative to duplicating and trimming the layer--something you might do when you want to change the stacking-order position of the layer in the middle of the composition, such as an object revolving in front of and then behind another object.

When you split a layer, both resulting layers contain all the keyframes that were in the original layer in their original positions. Any applied track mattes retain their order, on top of the layer. (See "Understanding keyframes" on page 145 and "Creating track mattes and traveling mattes" on page 235.)

To split a layer:

1. In the Timeline or Composition window, select a layer.
2. In the Timeline window, move the current-time indicator to the time where you want to split the layer.
3. Choose Edit > Split Layer.