Adobe Premiere Pro CS4 - Manual (Page 371)

365 USING ADOBE PREMIERE PRO CS4
Effects and transitions
Last updated 11/6/2011
longer to render. Vertical Displacement warps the image vertically only. Horizontal Displacement warps the image
horizontally only. Cross Displacement warps the image both vertically and horizontally.
Amount Higher values cause more distortion.
Size Higher values cause larger areas of distortion.
Offset (Turbulence) Determines the portion of the fractal shape used to create the distortion.
Complexity Determines the level of detail in the turbulence. Lower values cause smoother distortions.
Evolution Animating this setting results in changes of the turbulence over time.
Note: Although the Evolution value is set in units called revolutions, it’s important to realize that these revolutions are
progressive. The evolution state continues to progress infinitely at each new value. Use the Cycle Evolution option to
return the Evolution setting to its original state at each revolution.
Evolution Options Evolution Options provide controls that render the effect for one short cycle and then loop it for the
duration of your clip. Use these controls to prerender turbulence elements into loops, and thus speed up rendering time.
• Cycle Evolution Creates a loop that forces the evolution state to return to its starting point.
• Cycle (In Revolutions) The number of revolutions of the Evolution setting that the fractal cycles through before it
repeats. The timing of the Evolution cycles is determined by the amount of time between Evolution keyframes.
Note: The Cycle control affects only the state of the fractal, not geometrics or other controls, so you can get different results
with different Size or Offset settings.
• Random Seed Specifies a value from which to generate the fractal noise. Animating this property results in flashing
from one set of fractal shapes to another within the same fractal type. For smooth transition of the roughness, use the
Evolution control.
Note: Create new turbulence animations by reusing previously created Evolution cycles and changing only the Random
Seed value. Using a new Random Seed value alters the noise pattern without disturbing the evolution animation.
Pinning Specifies which edges to pin so that the pixels along those edges aren’t displaced.
Anti-aliasing For Best Quality Specify the amount of anti-aliasing by selecting Low or High.
Twirl effect
The Twirl effect distorts an image by rotating a clip around its center. The image is distorted more sharply in its center
than at the edges, causing a whirlpool result at extreme settings.
Angle How far to twirl the image. Positive angles twirl the image clockwise; negative angles twirl it counterclockwise.
For a whirlpool result, animate the angle.
Twirl Radius How far the twirl extends from the twirl center. This value is a percentage of width or height of the clip,
whichever is greater. A value of 50, for example, produces a twirl that extends to the edges of the clip.
Twirl Center Sets the position of the center of the twirl.
Wave Warp effect
The Wave Warp effect produces the appearance of a wave traveling across an image. You can produce a variety of
different wave shapes, including square, circular, and sine waves. The Wave Warp effect is automatically animated at
a constant speed across the time range (without keyframes). To vary speeds, you need to set keyframes.
Wave Type The shape of the wave.
Wave Height The distance, in pixels, between wave peaks.