Apple Motion 3 - Manual (Page 457)

Chapter 5 Using Behaviors 457
Important: Scrub does not affect clip audio.
Set Speed
This behavior allows you to change the speed (playback rate) of a clip. The speed
specified in the behavior begins at the behavior’s In point and exists for the duration of
the behavior. The clip continues playing at its default speed after the behavior’s Out
point. For example, if the Set Speed behavior begins at frame 60 and ends at frame
300, the clip plays normally until frame 59, plays back at the rate specified in the
behavior from frame 60 to frame 300, and then resumes its default playback speed at
frame 301. You can apply an “ease-in” or “ease-out” effect to the speed change.
HUD Control
The HUD contains the Speed, Ease In Time, Ease In Curve, Ease Out Time, and Ease Out
Curve parameters.
Parameters in the Inspector
Speed: A slider that sets the speed of the clip as a percentage. The default is 100%
(the clip’s normal speed). A Speed setting of 50% plays the clip at half speed.
Note: The Speed parameter can be keyframed to create variable playback rate changes.
Ease In Time: A slider that sets the number of frames over which the ease in to the
speed change occurs (from the start of the behavior). The default value is 20 frames.
Ease In Curve: A slider that defines the curvature of the ramp when easing into the
speed change. A value of 0 creates a sharp transition to the new speed; a value of 100
creates the smoothest ease in to the new speed. The default is 50%.
Ease Out Time: A slider that sets the number of frames over which the ease out of the
speed change occurs (from the end of the behavior). The default value is 20 frames.
Ease Out Curve: A slider that defines the curvature of the ramp when easing out of
the speed change. A value of 0 creates a sharp transition from the new speed to the
original speed; a value of 100 creates the smoothest ease out. The default is 50%.
Strobe
The Strobe behavior simulates the look of a strobe light or lower frame rate video by
holding a number of frames as defined by the Strobe Duration parameter over the
playback of the clip. For example, when Strobe Duration is set to 10, frame 1 is held for
10 frames, frame 11 for 10 frames, frame 21 for 10 frames, and so on. The frames in
between (2–10, 12–20, 22–30, and so on) do not appear.
HUD Control
The HUD contains the Strobe Duration parameter.