User Guide

CHAPTER 5
188
Animating Layers
5 Set the layer’s value. See the above procedures “To set a layer property by dragging in
the Timeline window” or “To change a layer’s value numerically in the Timeline window”
for information on setting a layer’s value.
6 Set an initial keyframe. For information on setting keyframes, see “Setting keyframes”
on page 163.
7 Move the current-time marker to the time where you want to add the second keyframe.
8 Change the value for the layer.
9 Repeat steps 7 and 8 as many times as you want to add more keyframes.
Setting and animating mask properties
Masks are paths that you draw or import into a Composition or Layer window to create
transparent areas for a layer. In the Timeline window, you can set mask shape, mask
feather, mask opacity, and mask expansion properties and change these properties over
time. You can also set interactions between different masks within a layer and set the type
of interaction used between the mask and the layer itself. For information on setting mask
properties, see the corresponding section for the property you want to set. For example,
to set the Mask Opacity property, see “Adjusting the opacity of a mask” on page 250. For
information on animating mask properties, see “Animating a mask” on page 253.
Setting and animating effects
Once you apply an effect to a layer, you can set keyframes for the effect property values.
You can also set multiple keyframes to animate effects. The properties available vary
depending on the effect. For more information on changing and animating effect
properties, see “Changing effect property values” on page 273 and “Changing effects over
time” on page 275.
UG.book Page 188 Wednesday, February 21, 2001 12:05 PM