Apple Final Cut Pro 7 - Manual (Page 163)

Chapter 8 Adding Video Filters and Transitions 163
Delete a transition:
Click the transition in the Timeline to select it.
1
Press Delete. 2
Add a transition to an edit point:
Click the line between two clips in the Timeline to select the edit point.
1
With the edit point selected, choose Effects > Default - Cross Dissolve to apply a cross 2
dissolve to the selected edit point.
Position the playhead before the transition and play the sequence to see the transition.
3
Change the duration of a transition:
Position the pointer over either side of the transition and drag to lengthen or shorten
1
the transition.
Lengthening the transition slows it down, and shortening the transition speeds it up.
Play the sequence to see the transition.
2
Apply a different transition to a cut:
Click the cross dissolve transition to select it.
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Choose Effects > Video Transitions > 3D Simulation > Cube Spin. 2
Play the sequence to see the transition. 3