Posterize

What it does: Posterize creates a print of the video image using a small set of colors as it wipes between two clips.

How to use it: Set the picture color properties, the number of colors and dithering style.

• Color Shift shifts the colors around the color wheel, for example so blues become greens and greens become yellows. This is useful to effect a subtle (or not so subtle) change in the color palette.
• Color adjusts the color richness, or saturation of the image. Turn this down to remove color; turn it up to enhance the colors.
• Brightness sets the over all light level of the image.
• Levels sets the number of colors to paint with.
• Dither determines whether or not dithering will be used for blending colors together to create missing colors.
• Tempo sets the speed at which the effect changes the image. For a sudden change, set the Tempo high. For a gradual change, set it low.
• Cross Fade sets the percentage of the transition that includes a cross fade of the image from first to second clip. Turn down Cross Fade for an abrupt switch between images. Turn it up for an increasingly gradual mix.