User Guide

Fill color Specifies the background color.
Fill alpha channel When checked, makes the background transparent (useful if the clip
with the effect is superimposed). To access this check box from the Effect Controls
window, click Setup.
Channel Blur
The Channel Blur effect blurs a clip’s red, green, blue, or alpha channels individually. You
can specify that the blur is horizontal, vertical, or both. Use this effect for glow effects or if
you want a blur that does not become transparent near the edges of the layer. The Edge
Behavior option describes how to treat the edges of a blurred image. If you deselect it,
pixels outside of the image are transparent, which makes the edges of the blurred image
semitransparent. Select the Repeat Edge Pixels option to repeat the pixels around the
edges, preventing the edges from darkening and becoming more transparent.
Channel Mixer
Using the Channel Mixer effect, you can modify a color channel using a mix of the current
color channels. Use this effect to make creative color adjustments not easily done with the
other color adjustment tools. Create high-quality grayscale images by choosing the
percentage contribution from each color channel, create high-quality sepia-tone or other
tinted images, and swap or duplicate channels.
Red, Green, Blue Specifies the contribution of the individual source channel to the
output channel.
Constant Specifies the base amount of the input channel to be added to the output
channel.
To mix channels in an image:
1 Drag the Channel Mixer effect to the clip.
2 Drag any existing (or source) channel’s slider to the left to decrease the channel’s
contribution
to the output channel and to the right to increase it. Or, click an underlined value,
type a value between –200% and +200% in the value box, and click OK. Using a negative
value inverts the source channel before adding it to the output channel.
3 If desired, drag the slider or type a value for the channel’s constant value. This value
adds a base amount of a channel to the output channel.
4 If desired, select Monochrome to apply the same settings to all the output channels,
creating a color image that contains only gray values.
Monochrome is useful for images that you plan to convert to grayscale. If you select and
then deselect this option, you can modify the blend of each channel separately, creating a
hand-tinted appearance.
Using Help | Contents | Index Back 262
Adobe Premiere Pro Help Applying Effects
Using Help | Contents | Index Back 262
Chroma Key
The Chroma Key effect keys out all image pixels that are similar to a specified key color.
When you key out a color value in a layer, that color or range of colors becomes
transparent
for the entire layer. Control the range of transparent colors by adjusting the
tolerance level. You can also feather the edges of the transparent area to create a smooth
transition between the transparent and opaque areas.
Chroma Key
A. Original image B. Blue color keyed out C. Image on second track D. Final composite image
Clip
The Clip effect trims rows of pixels off the edges of a clip and replaces the trimmed areas