Adobe PREMIERE 5 User Manual page 199

Because the clips in a virtual clip must be on the Timeline but outside of the main video
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program, it's a good idea to create virtual clips in an area you set aside before the main program
starts in the Timeline. This reduces the possibility that edits to the main program (such as
ripple edits) will accidentally alter Timeline areas containing virtual clips. You can protect the
original clips further by building virtual clips on tracks other than the ones containing the main
program or superimpositions and by locking the clips or their tracks (see "Locking and
unlocking tracks" on page 147 or "Locking and unlocking clips" on page 165).
A virtual clip can contain one or more virtual clips. This technique, called nesting, can be
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useful when you are organizing a complex hierarchy of effects. In Premiere you can nest up
to 64 levels of virtual clips.
Because virtual clips can contain references to many clips, actions involving a virtual clip may
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require additional processing time as Premiere applies the actions to all component clips.
To create a virtual clip:
1 Drag the work area markers to mark the beginning and end of the main program (see
"Previewing a video program" on page 192). Because you are about to create a second program
within the Timeline, setting the work area to the main program only helps ensure that when
the program is finished, you export only the main program and not other areas of the Timeline.
In an area of the Timeline outside the main program work area (preferably before), add and
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edit the clips you want in your virtual clip. Apply any effects and transitions if desired.
Select the block select tool ( ).
3
Drag to create a rectangle that defines the time boundaries of the clips you want to include
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in the virtual clip. You can include parts of clips; Premiere will only use the portions of clips
inside the rectangle you drag.
Position the block select tool anywhere inside the rectangle. The pointer changes to the
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virtual clip tool ( ).
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User Guide