Effects 115
Applying video effects
Effects can add variety and visual excitement to a video. Some effects, like
Brightness/Contrast or Gamma, are designed to correct the original video;
others, like Filter Effects, Mosaic or Diffuse Glow, are simply special effects.
The supported special effects are described as follows (see also effects for colour
correction on p. 123):
• Chroma Key - A method of removing a colour (or a colour range)
from one video to reveal another video or image behind it. The
"removed" colour becomes transparent.
• Colourize - Offers an easy way to apply a colour tint/wash.
• Diffuse Glow - This broadens highlights in the video by brightening
gradually outward from existing highlights.
• Emboss - The Emboss effect remaps contours to simulate a bas-relief
effect. This creates a convex rounded edge and shadow effect.
• Filter Effects - Filter Effects encompass Shadows, Glows, Bevels,
Emboss, Colour fills and 3D special effects. Apply individually or in
combination.
• Gaussian Blur - The Gaussian Blur effect smoothes the image or video
by averaging pixels. It's especially useful for removing a moiré
(interference) pattern from scanned images and can help clean up
regions of visual interference from fine patterns.
• Gradient Map - The Gradient Map adjustment is for remapping
lightness information in the video to a new colour range. It makes for
great "posterized" effects and is a quick substitute where a pop-art feel
is being sought.
• Greyscale - This effect creates shades of grey; monotones ranging
from black through to white.
• Invert - This effect inverts the colours, in the same way that a photo
and its negative are opposites of each other.
