Apple Final Cut Pro 7 - Manual (Page 504)

Exceptions to Normal Use of Source and Destination Controls
There are several exceptions to the way you normally use Source and Destination controls
to specify destination tracks for source clip items.
When Dragging Clips Directly to the Timeline
If you drag a clip from the Browser or Viewer directly into a specific track in the Timeline,
it is placed on that track even if that track is not a destination track. However, the currently
selected destination tracks modify this operation in two ways:
• If the video Source and Destination controls are disconnected and you drag a clip to an
audio track: No video is edited into your sequence, and vice versa.
• If you connect nonadjacent Source controls: The source clip items are edited into the
sequence using the track separation defined by the Source controls. For example, if A1
and A3 are the current audio destination tracks, a clip that you drag to your sequence
will always have one empty track between the two source audio clip items, and will
keep that one-track offset no matter which audio tracks you drag the items into.
When Using the Superimpose Edit
If you edit a clip into your sequence using a superimpose edit, it is edited into the track
above the currently selected destination track. Any clips that are already there are moved
up to a new track, creating one or more additional tracks if necessary. (Superimpose edits
are explained in
“Three-Point Editing.” )
When Recording with the Voice Over Tool
The Voice Over tool records audio to the track connected to Source control a2. For more
information, see
“Using the Voice Over Tool.”
Locking Tracks to Prevent Edits or Changes
If you want to set one or more tracks as temporarily “off limits” to edits or changes, you
can lock them using the Lock Track control in each track’s header. While a locked track
can be specified as a destination track, no media will be edited into a locked track. Locked
tracks appear cross-hatched in the Timeline.
To lock a single track
µ
Click the Lock Track control to the left of the track.
The icon changes to a closed lock, and a crosshatch pattern is displayed on the track. No
edits will be placed on the locked track until you unlock it.
To lock a video track using keyboard shortcuts
µ
Press F4 and the number of the track you want to lock (for tracks 1 through 9).
504 Chapter 34 Working with Tracks in the Timeline