In effects that reference layers, you can use masks for greater control over the
effect’s influence. You can also use expressions to animate mask points.
In the Project panel, select the Turtle.mov file, and drag it to the Timeline panel, placing it
below the Watching_TV.mov layer.
Choose Fit Up To 100% from the Magnification Ratio pop-up menu at the bottom of the
Composition panel so that you can see the whole composition.
Select the Selection tool ( ), and then drag the Turtle.mov layer in the Composition panel
until the anchor point is centered in the TV screen.
Note
If you’re using a Mac with Retina display, you’ll see Fit Up To 200%.”Zooming and panning by touch
If you’re using a touch-enabled device, such as a Microsoft Surface, Wacom Cintiq Touch,
or multi-touch trackpad, you can use your fingers to zoom and pan. Touch gestures let you
zoom and pan in the Composition, Layer, Footage, and Timeline panels.
To zoom: Pinch two fingers closer together to zoom in, or move them further apart to zoom
out.
To pan: Move two fingers in unison to pan up, down, left, or right in the panel’s current
view.