Apple Motion 2 - Manual (Page 791)

Chapter 10 Using Filters 791
Echo
Echoes an object’s motion by repeating frames. The result is that moving areas of an
image leave a streaking trail behind as they move.
Parameters in the Inspector
Delay: Sets the amount of delay in frames between echoes. Values range from 0 to 1.
Number: Sets the number of echoes.
Decay: Sets the amount of time it takes for an echo to decay.
Amount: Sets the relative opacity of each echo. Values range from 0 to 1.
Dashboard controls
The Dashboard contains the Delay, Number, Decay, and Amount controls.
Scrub
Moves a virtual playhead around a clip, allowing you to change the timing of the clip
without moving it in the Timeline. Additionally, it allows you to animate the offset
parameter, often with interesting results. Try adding the Scrub filter to a clip, then
applying the Randomize behavior to the Frame offset, with the “Offset from” parameter
set to Current Frame. Also, you can create a hold frame by setting Offset to First Frame,
then using “Frame offset” to find the frame you wish.
Important: Scrub does not affect clip audio.
Parameters in the Inspector
Frame offset: Sets the offset of the virtual playhead. Values range from -100 to 100.
Offset from: Sets the position from which the virtual playhead is offset. Values can be
selected from First Frame or Current Frame.
Frame Blending: Toggles the blending between frames on and off.
Dashboard controls
The Dashboard contains all the same controls as the Inspector.
Strobe
Strobes the image by holding frames for a set duration. The effect is that moving
images appear to skip frames as they play.
Parameters in the Inspector
Strobe Duration: Sets the number of frames of each strobe. Values range from 1 to 60.
Dashboard controls
The Dashboard contains the Strobe Duration control.
01112.book Page 791 Sunday, March 13, 2005 10:36 PM