Strobe Light Effect; Texturize Effect - Adobe AFTER EFFECTS 7.0 Manual

ADOBE AFTER EFFECTS 7.0
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User Guide
Specifies whether scattering changes at each frame. To animate scattering without keyframes,
Scatter Randomness
select the Randomize Every Frame option. If this option is not selected, scattering remains the same at each frame
unless keyframes are created for the Scatter Amount and Grain properties.

Strobe Light effect

The Strobe Light effect performs an arithmetic operation on a layer at periodic or random intervals. For example,
every five seconds the layer could appear completely white for one-tenth of a second, or a layer's colors could invert
at random intervals. The layer's quality setting does not affect Strobe Light.
This effect works with 8-bpc color.
Adjust the following controls for the Strobe Light effect:
Specifies the color of the light.
Strobe Color
Specifies the percentage of the entire effect that is applied to the layer.
Blend With Original
Specifies in seconds how long a strobe effect lasts.
Strobe Duration
Specifies in seconds the duration between the start of subsequent strobes. For example, if the Strobe
Strobe Period
Duration is set to 0.1 second and the Strobe Period is set to 1.0 second, the layer will have the effect for 0.1 second
and then be without the effect for 0.9 seconds. If this value is set lower than the Strobe Duration, the strobe effect is
constant.
Specifies the probability that any given frame of the layer will have the strobe effect,
Random Strobe Probability
giving the appearance of a random effect.
Specifies how the effect is applied. Operates on Color Only performs the strobe operation on all color
Strobe
channels. Make Layer Transparent makes the layer transparent when a strobe effect occurs.
Specifies the arithmetic operator to use when Operates on Color Only is selected from the Strobe
Strobe Operator
menu. The default setting is Copy.

Texturize effect

The Texturize effect gives a layer the appearance of having the texture of another layer. For example, you could make
the image of a tree appear as if it had the texture of bricks, and control the depth of the texture and the apparent light
source. At Best quality, the texture layer is positioned and scaled with subpixel accuracy.
This effect works with 8-bpc color.
Original layers (left and center) and with center applied as the texture (right)
Adjust the following controls for the Texturize effect:
Specifies the layer you want to use as the texture.
Texture Layer
Specifies the angle at which light hits the texture. This setting affects where shadows appear.
Light Direction
Specifies how distinct the texture appears on the effect layer.
Texture Contrast