Adobe After Effects CS3 Manual de usuario Pagina 264

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AFTER EFFECTS CS3
User Guide
259
Lock or unlock masks
Locking a mask prevents you from selecting it in the Timeline, Composition, and Layer panels or setting it as a target
in the Layer panel. Use this feature to avoid unwanted changes to the mask.
1 In the Timeline panel, expand the Masks property group.
2 In the A/V Features column, click the box underneath the Lock icon next to the mask you want to lock or
unlock. A mask is locked and cannot be selected when its Lock switch is selected—i.e., when the Lock icon appears
in the box.
Note: To unlock multiple masks at one time, select one or more layers and choose Layer > Mask > Unlock All Masks.
Copy, cut, save, reuse, and delete masks
You can reuse masks in other layers and compositions—particularly Bezier masks you’ve spent a long time
perfecting. Mask paths are stored inside a composition in a project file. It can be useful to create a project with
compositionsjustforstoringcomplexlayermasks.Whenyouwanttouseamaskfromanotherproject,importthat
project into your current project.
Copy, cut, duplicate, or paste a mask
To copy or cut selected masks to the clipboard, choose Edit > Copy or Edit > Cut.
To duplicate selected masks, choose Edit > Duplicate.
To paste a mask onto a layer, select the layer and then choose Edit > Paste. If a mask is selected, this replaces the
selected mask.
Save a mask
1
In the Timeline panel for the composition containing the layer and mask you want to save, expand the layer and
its mask properties.
2 Do one of the following:
To save an animated mask, select the mask keyframes you want to save.
To save a nonanimated mask, select the mask.
3 Copythemaskorkeyframes,andpastethemaskorkeyframestoanewlayer.Thenewlayercanbeasimplesolid.
Reuse a mask
1
Open the composition containing the mask you want to reuse. If you saved the mask in another project, import
the project and then open the masks composition.
2 In the Timeline panel, expand the saved masks layer and mask properties.
3 Select the mask or keyframes.
4 Copy the mask or keyframes, and paste the mask or keyframes to the layer to which you want to apply the mask.
Delete masks
To delete one mask, select the mask in the Timeline panel and press Delete.
Todeleteallmasks,selectthelayercontainingthemasksyouwanttoremoveandchooseLayer>Masks>Remove
All Masks.
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