Adobe Premiere Pro CS4 - Manual (Page 395)

389 USING ADOBE PREMIERE PRO CS4
Effects and transitions
Last updated 11/6/2011
Strobe Light effect
The Strobe Light effect performs an arithmetic operation on a clip or makes the clip transparent at periodic or random
intervals. For example, every five seconds the clip could become completely transparent for one-tenth of a second, or
a clip’s colors could invert at random intervals.
Strobe Color The color of the strobe light.
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.
Strobe Duration (Secs) How long, in seconds, each strobe lasts.
Strobe Period (Secs) The time, in seconds, between the start of subsequent strobes.
Random Strobe Probability The probability that the strobe operation will apply to any given frame.
Strobe Choose Makes Layer Transparent for each strobe to make the clip transparent. Choose Operates On Color
Only to use the operation specified by Strobe Operator.
Strobe Operator The operation to use for each strobe.
Random Seed The probability that the strobe seed will apply to a given frame.
Texturize effect (Windows only)
The Texturize effect gives a clip the appearance of having the texture of another clip. For example, you could make
the image of a tree appear as if it had the texture of bricks, and you can control the depth of the texture and the apparent
light source.
Texture Layer The source of the texture.
Light Direction The angle at which light hits the texture.
Texture Contrast The magnitude of the result.
Texture Placement How the texture layer is applied to the clip:
• Tile Texture Applies the texture repeatedly.
• Center Texture Positions the texture in the middle.
• Stretch Texture To Fit Stretches the texture to the dimensions of the clip.
Threshold effect
The Threshold effect converts grayscale or color images to high-contrast, black-and-white images. Specify a luminance
level as a threshold; all pixels that are as bright as or brighter than the threshold are converted to white, and all darker
pixels are converted to black.