User Guide

CHAPTER 6
220
Fine-tuning Animation
5 Type values for the following options, and then click OK:
• Influence specifies the amount of influence toward the previous keyframe (for incoming
interpolation) or the next keyframe (for outgoing interpolation).
• Continuous creates a smooth transition by maintaining equal incoming and outgoing
velocities.
Creating smooth changes using roving keyframes
Using the roving keyframe option in After Effects, you can easily create smooth movement
across several keyframes at once. Roving keyframes are keyframes that are not linked to
a specific time; their speed and timing are determined by adjacent keyframes. When you
change the position of a keyframe adjacent to a roving keyframe in a motion path, the
timing of the roving keyframe may change.
Roving keyframes are available only for spatial layer properties such as Position. In
addition, a keyframe can rove only if it is not the first or last keyframe in a layer, because
a roving keyframe must interpolate its speed from the previous and next keyframes.
The original motion path (left) indicates different velocities between keyframes. After the keyframes
are set to rove (right), the motion path displays consistent speed over the range of keyframes.
UG.book Page 220 Wednesday, February 21, 2001 12:05 PM