Apple Final Cut Pro 6 - Manual (Page 610)

Chapter 16 Working with Multiclips 277
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Note: If the Multiclip Playback option is not enabled, you can still switch and cut during
playback, but the angle in the Canvas is not updated until playback stops. Also,
multiclip angles are not played simultaneously in the Viewer. Instead, only the active
angle is played.
To set up Final Cut Pro to edit multiclips in real time, choose the following options:
 Multiclip Playback option: Enable this option in the RT pop-up menu in the Timeline
so that all multiclip angles play in real time in the Viewer. This option and the Open
playhead sync option allow you to view all of your multiclip angles in real time while
you play your sequence.
 Open playhead sync option: Choose the Open option from the Playhead Sync pop-up
menu in the Viewer or Canvas. This option automatically opens the multiclip beneath
the Timeline playhead in the Viewer, so you can view all of its angles at once.
 View options in the Viewer: Choose the number of multiclip angles you want to
display in the Viewer from the View pop-up menu.
Select the active angle in
the Viewer.
Enable the Multiclip
Playback option in the
RT pop-up menu.
Choose a multiclip view from
the View pop-up menu.
Choose Open from
the Playhead Sync
pop-up menu.