USING ADOBE PREMIERE PRO

370

Effects and transitions

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.

Wave Width The size of the wave in pixels.

Direction The direction the wave travels across the image. For example, a value of 225° makes the waves travel diagonally from upper right to lower left.

Wave Speed The speed (in cycles per second) at which the waves travel. A negative value reverses the wave direction, and a value of 0 produces no movement. To vary wave speed over time, set this control to 0, and then set keyframes for the Phase property.

Pinning Which edges to pin so that the pixels along those edges aren’t displaced.

Phase The point along the waveform at which a wave cycle begins. For example, 0° starts the wave at the midpoint of its downward slope, and 90° starts it at the lowest point in the trough.

Antialiasing (Best Quality) Sets the amount of anti-aliasing, or edge smoothing, to perform on the image. In many cases, lower settings produce satisfactory results; a high setting can significantly increase rendering time.

An example of the Wave Warp effect can be found in this video.

Generate effects

4-Color Gradient effect

The 4-Color Gradient effect produces a four-color gradient. You define the gradient by four effect points, the positions, and colors of which can be animated using the Positions & Colors controls. The gradient is composed of four solidcolor circles blended together, each with an effect point as its center.

Blend Higher values create more gradual transitions between colors.

Jitter The amount of jitter (noise) in the gradient. The jitter, which reduces banding, affects only those areas where banding could occur.

Opacity The opacity of the gradient, as a fraction of the clip’s Opacity value.

Blending Mode The blend mode to use in combining the gradient with the clip.

Last updated 1/16/2012

USING ADOBE PREMIERE PRO

371

Effects and transitions

Cell Pattern effect

The Cell Pattern effect generates cellular patterns based on cellular noise. Use it to create static or moving background textures and patterns. The patterns can be used in turn as textured mattes, as transition maps, or as a source for displacement maps.

Original image (left); Cell Pattern effect creates a displacement map (center), which is used for the Displacement Map effect (right).

Cell Pattern The cell pattern to use. HQ denotes high-quality patterns that render with more definition than their unmarked counterparts. Mixed Crystals is available only as a high-quality option.

Note: The Static Plates option is identical in appearance to the Plates option. However, when evolving, the static plates retain a uniform lightness value, whereas the plates shift the lightness of the cell pattern.

Invert Inverts the cell pattern. Black areas become white, and white areas become black.

Contrast/Sharpness Specifies the contrast of the cell pattern when you use the Bubbles, Crystals, Pillow, Mixed Crystals, or Tubular cell pattern. The control specifies sharpness for any of the Plate or Crystallize options.

Note: The contrast is affected by the option chosen in the Overflow menu.

Overflow How the effect remaps values that fall outside the grayscale range of 0-255. Overflow isn’t available if sharpness-based cell patterns are chosen.

•Clip Values above 255 are mapped to 255. Values below 0 are mapped to 0. Contrast amount controls how much of the image falls outside the range 0-255; higher contrast amounts result in a mostly black or white image, with less gray. Therefore, less subtle cellular detail appears at higher contrast settings.

•Soft Clamp Remaps grayscale values to fall inside the 0–255 range. Contrast appears reduced; cells are mostly gray with very few areas of pure black or white.

•Wrap Back Values above 255 or below 0 are reflected back into the 0-255 range. For example, a value of 258 (255+3) is reflected to 252 (255-3), and a value of -3 is reflected to 3. With this setting, Contrast values above 100 increase complexity and detail.

Disperse How randomly the pattern is drawn. Lower values cause more uniform or grid-like cell patterns.

Size The size of the cells. The default size is 60.

Offset Determines the portion of the cell pattern that is used.

Tiling Options Choose Enable Tiling to create a pattern built of repeating tiles. Cells Horizontal and Cells Vertical determine how many cells wide and how many cells high each tile is.

Evolution Animating this setting results in changes of the pattern 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 Provide controls that render the effect for one short cycle and then loop it for the duration of your clip. Use these controls to pre-render the cell pattern 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.

Last updated 1/16/2012

USING ADOBE PREMIERE PRO

372

Effects and transitions

• Cycle The number of revolutions of the Evolution setting that the cell pattern 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 cell pattern, 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 cell pattern. Animating this property results in flashing from one cell pattern to another within the same cell pattern type. For smooth transition of the cell pattern, use the Evolution control.

Note: Create new cell pattern animations by reusing previously created Evolution cycles and changing only the Random Seed value. Using a new Random Seed value alters the cell pattern without disturbing the evolution animation.

Checkerboard effect

The Checkerboard effect creates a checkerboard pattern of rectangles, half of which are transparent.

Matching color produces subtle result (center); using red with high Width and low Height settings (right) creates striped result.

Anchor The point of origin of the checkerboard pattern. Moving this point offsets the pattern.

Size From How the dimensions of the rectangles are determined:

•Corner Point Each rectangle’s dimensions are those of the rectangle with opposite corners defined by the Anchor and Corner points.

•Width Slider A rectangle’s height and width are equal to the Width value, meaning the rectangles are squares.

•Width & Height Sliders A rectangle’s height is equal to the Height value. A rectangle’s width is equal to the Width value.

Feather Thickness of the edge feather within the checkerboard pattern.

Color The color of the non-transparent rectangles.

Opacity The opacity of the colored rectangles.

Blending Mode The blend mode to use to composite the checkerboard pattern on top of the original clip. The default None mode renders the checkerboard pattern only.

Circle effect

The Circle effect creates either a customizable solid circle or ring.

Edge None creates a solid disk. The other options all create rings. Each option corresponds to a different set of properties that determine the shape and edge treatment of the ring:

•Edge Radius The difference between the Edge Radius property and the Radius property is the thickness of the ring.

•Thickness The Thickness property sets the ring’s thickness.

•Thickness * Radius The product of the Thickness property and the Radius property is the ring’s thickness.

•Thickness & Feather * Radius The product of the Thickness property and the Radius property is the ring’s thickness. The product of the Feather property and the Radius property is the ring’s feather.

Last updated 1/16/2012

USING ADOBE PREMIERE PRO

373

Effects and transitions

Feather The thickness of the feather.

Invert Circle Inverts the matte.

Blending Mode The blend mode used to combine the shape and the original clip. The default None displays only the shape, without the original clip.

Ellipse effect

The Ellipse effect draws an ellipse.

Original image (left), with effect applied to the background once (center), and then applied multiple times (right)

Eyedropper Fill effect

The Eyedropper Fill effect applies a sampled color to the source clip. This effect is useful for quickly picking a solid color from a sample point on the original clip or picking a color value from one clip and using blend modes to apply this color to a second clip.

Original image (left), and with different color samples applied (center and right)

Sample Point The center of the sampled area.

Sample Radius The radius of the sampled area.

Average Pixel Color Which color values are sampled:

•Skip Empty Samples the average RGB color values, excluding those of transparent pixels.

•All Samples the average of all RGB color values, including those of transparent pixels.

•All Premultiplied Samples the average of all RGB color values, premultiplied with the alpha channel.

•Including Alpha Samples the average of all RGB color and alpha channel values. The result is that the sampled color also contains the average transparency of the sampled pixels.

Maintain Original Alpha When selected, the effect maintains the original clip’s alpha channel. If you choose Including Alpha from the Average Pixel Color menu, the original alpha is stenciled over the sampled color.

Blend With Original The effect’s transparency. The result of the effect is blended with the original image, with the effect result composited on top. The higher you set this value, the less the effect affects the clip. For example, if you set this value to 100%, the effect has no visible result on the clip; if you set this value to 0%, the original image doesn’t show through.

Last updated 1/16/2012