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259
Adobe Premiere Pro Help
Applying Effects
Using Help
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Contents
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Index
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259
Width
Specifies the wave width.
Bevel Alpha
The Bevel Alpha effect adds a beveled edge and lights to the alpha boundaries of an
image, often giving two-dimensional elements a three-dimensional appearance. (If the
clip has no alpha channel or its alpha channel is completely opaque, the effect is applied
to the edges of the clip.) The edge created in this effect is somewhat softer than that of the
Bevel Edges effect. This effect works well with text containing an alpha channel.
Bevel Edges
The Bevel Edges effect gives a chiseled and lighted three-dimensional appearance to the
edges of an image. Edge locations are determined by the alpha channel of the source
image. Unlike Bevel Alpha, the edges created in this effect are always rectangular, so
images with nonrectangular alpha channels do not produce the proper appearance. All
edges have the same thickness.
Black & White
The Black & White effect converts any color clip to grayscale; that is, colors appear as
shades of gray. You cannot keyframe this effect.
Blend
The Blend effect blends two clips using one of five modes. A cross-fade is a standard
transition between two images: The original image fades out while the new image fades
in. After you blend layers using this effect, disable the clip you selected from the Blend
with Layer menu by selecting the clip and choosing Clip > Enable.
Blue Screen Key
The Blue Screen Key effect makes all image pixels that are similar to a standard bluescreen
transparent.
Brightness & Contrast
The Brightness & Contrast effect adjusts the brightness and contrast of the entire clip. The
value 0.0 indicates that no change is made.
Using the Brightness & Contrast effect is the easiest way to make simple adjustments to
the tonal range of the image. It adjusts all pixel values in the image at once—highlights,
shadows, and midtones. Brightness & Contrast does not work on individual channels.
Broadcast Colors
The Broadcast Colors effect alters pixel color values so that the clip can be accurately
represented in a television broadcast. Computers represent colors as combinations of red,
green, and blue. Consumer video equipment represents colors using different composite
signals. Home video equipment cannot reproduce signals above a certain amplitude, and
computer-generated colors can easily exceed this limit. (Signal amplitude is measured in
IRE units; 120 IRE units is the maximum possible transmission amplitude.) Use the
Broadcast Colors effect to reduce luminance or saturation to a safe level.
