Apple Motion 4 - Manual (Page 380)

The Keyframe Editor is displayed, the animation curve appears, and a new, untitled curve
set is created. For more information on curve sets, see
Filtering the Parameter List .
Retiming in the Timeline
By default, a 60-frame clip played back at 30 frames per second takes two seconds to
display its 60 frames. If its In point is frame 1, its Out point is frame 60. Speed and duration
are interactive; that is, if you increase the speed at which the clip plays back, its duration
automatically decreases. Playing back the same clip at 15 frames per second would take
twice as long. The clip’s In point remains the same, but its Out point is now 120.
For more detailed information about retiming, see Retiming . For more information on
using the Retiming behaviors, see Retiming Behaviors .
Adjusting a Clip’s Speed
Motion allows you to easily change the timing of clips in the Timeline.
To shorten the clip’s duration and speed up its playback speed
1 With the pointer over the end of the clip, press and hold down the Option key.
The pointer turns into the retime pointer.
2 Drag the Out point of the clip’s bar to the left.
As you drag, the tooltip displays the clip’s duration and speed.
Note: To use the retime pointer, Constant Speed must be chosen from the Time Remap
pop-up menu in the Properties tab of the Inspector. When Variable Speed is chosen, the
retime pointer has no effect.
380 Chapter 8 Using the Timeline