Apple Final Cut Pro 5 - Manual (Page 1032)

Chapter 12 Changing Motion Parameters 245
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3 In the Canvas or Timeline, position the playhead over the clip you just edited into track
V1, then set the sequence In and Out points to be the duration of the building clip
(choose Mark > Mark Clip or press X).
4 Perform a superimpose edit to superimpose the sign into track V2 for the duration of
the shot.
Instead of changing settings in the Motion tab, you’ll manipulate the images in
the Timeline.
Position the playhead
anywhere within the clip.
Set the In and Out points
for the duration of this clip.
The sign is now on top
of the building.