To move layers to the start of the timeline in Adobe After Effects, you can use the keyboard shortcut CMD + shift + left bracket to move a selected layer to the top of the layer stack. This does not change the in-point of the layer but rather the stacking order.
Understanding Layer Positioning in After Effects
When working with layers in After Effects, it's essential to understand how they are positioned both in the layer panel and on the timeline:
- Layer Stacking Order: Layers are stacked on top of each other in the timeline, with the top layer being the most visible and the bottom layer being hidden by other layers. This is determined by their position in the layer panel.
- Layer In-Points: The start point on the timeline at which the layer begins to be visible is the in-point. You can move a layer's in-point along the timeline without changing its stack order.
How to Move Layers
Although the question asks about 'moving layers to start', it seems to have been referring to moving the layer in the layer stack, and not to the beginning of the timeline. With that being said here are ways to move layers:
Moving Layers to the Top of the Layer Panel
To move a selected layer to the top of the layer stack:
- Select the Layer: Click on the layer you wish to move in the layer panel.
- Use the Keyboard Shortcut: Press CMD + shift + left bracket (macOS) or Ctrl + Shift + Left Bracket (Windows).
- Result: The selected layer will now be the topmost layer. The layer will remain active.
Moving Layers to the Beginning of the Timeline
To move a layer to the beginning of the timeline:
- Select the Layer: Click on the layer you wish to move in the layer panel.
- Drag the Layer: Click and hold on the left edge of the selected layer in the timeline, and drag it to the beginning of the timeline.
- Keyboard Shortcut: Alternatively, use the [ or { keys to move the in-point to the current time indicator.
Practical Application
Here are some situations where moving layers might be necessary:
- Creating Visual Hierarchy: Layers at the top of the layer stack will render over layers below them. This is critical for designing visual effects and motion graphics.
- Compositing: In compositing, you often need to layer different elements and adjustments in a specific order.
- Animation Control: By moving layers around, you can start and stop layers at your desired times.
Moving layers is a core task within After Effects. Understanding the different techniques can help streamline your workflow and be more efficient.
