Apple Final Cut Pro 7 - Manual (Page 1123)

To remove Bezier handles from a keyframe in a motion path
Do one of the following:
µ
Control-click a keyframe with Bezier handles in the Canvas, then choose Make Corner
Point from the shortcut menu.
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Select the Smooth Point tool in the Tool palette (or press the P key three times), then
click a keyframe with Bezier handles.
Controlling Speed Along a Motion Path
The speed at which a clip travels along a motion path is determined by two factors:
• The spatial, or physical, distance between two keyframes in the Canvas: The farther a clip
has to travel in a given duration, the faster its apparent movement. The less distance
a clip moves, given the same amount of time, the slower it appears to go.
• The duration, or distance in time, between two keyframes in the Center parameter of a clip’s
Motion tab: Two keyframes 1 second apart result in faster motion than two keyframes
4 seconds apart.
You can modify a clip’s velocity, changing the quality of its movement. With no velocity
adjustments, clips move at full speed and then come to a full stop. This can result in
abrupt, artificial-looking motion. Final Cut Pro gives you the ability to change the velocity
of a clip’s motion over time, using velocity handles to modify the keyframes of a clip’s
motion path in the Canvas.
By adjusting a keyframe’s velocity in the Canvas, inertia can be added to a clip’s motion.
You can adjust the first keyframe of a motion path so that, instead of taking off at full
speed from a complete stop, the clip starts off slowly and then speeds up over time. These
speed changes are indicated by velocity tick marks along that clip’s motion path.
Note: In the two examples below, the motion is at a single constant speed.
Tick marks farther
apart indicate
slower motion. Tick marks closer
together indicate
faster motion.
1123 Chapter 67 Adjusting Parameters for Keyframed Effects