Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 220

• In layer bar mode or in the Graph Editor, adjust the time difference between two keyframes. Decrease speed by
moving one keyframe farther away from the other, or increase speed by moving one keyframe closer to the other.
Shorter temporal distance between keyframes increases layer speed.
• Apply the Easy Ease keyframe assistant, which automatically adjusts the speed of change as motion advances
toward and retreats from a keyframe.
See also
"Work with the Graph Editor" on page 186
"About animation, keyframes, and expressions" on page 185
Work with the speed graph
After you have set the shape of a motion path or created keyframes for a property, you can adjust the speed. Using
the speed graph, you can adjust the rate of change of a value.
For example, you can change the motion of a layer so that it slows just before a keyframe and then speeds up just after
the keyframe, or so that it moves quickly over a certain distance and then slows down smoothly. By adjusting the rise
and fall of the speed graph, you can control how fast or slow a value changes from keyframe to keyframe.
Note: Like the value graph, the speed graph displays x, y, and z (3D only) values in different colors: x values are red, y
values are green, and z values are blue.
You can control the values approaching and leaving a keyframe together, or you can control each value separately.
The incoming handle increases the speed or velocity when you drag it up, and decreases the speed or velocity when
you drag it down. The outgoing handle influences the next keyframe in the same way. You can also control the
influence on speed by dragging the handles left or right.
A B C
Direction handles in speed graphs
A. Incoming direction handle B. Speed control C. Outgoing direction handle
AFTER EFFECTS CS3 214
User Guide