Apple Final Cut Pro 7 User Manual
Page 1166
• Freeze frame (0 percent speed): So far, all these graphs have illustrated forward-playing
clips, represented by a line that slopes upward. A freeze frame, represented by a flat
line, may also be created with the keyframe graph.
Sequence time
Freeze frame
Sour
ce time
• Reverse speed (less than 0 percent speed, or negative speed): When a clip plays in reverse,
previous frames of the video clip are mapped to successive frames of the Timeline.
Reverse speed is represented by a line that slopes downward.
Sequence time
Rev
erse s
peed
Sour
ce time
• Acceleration/deceleration: Finally, the most powerful feature of the keyframe graph is
the ability to adjust the transition in a clip from one speed to another, at whatever
velocity you require. Gradual changes from one speed to another are represented by
curves. For example, a gradual transition from slow motion to fast-forward might look
like this:
Sequence time
Acc
eler
ation
Sour
ce time
Note: Bezier curves in the Speed parameter are constrained so that any value along the
curve is limited by the minimum and maximum values of the surrounding keyframes.
For more information on using Bezier handles to smooth keyframes, see
For more information on working in the keyframe editor of the Timeline, see
“Working with the Timeline Keyframe Editor.”
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Chapter 69
Changing Clip Speed