Adobe Premiere Elements 8 - Manual (Page 165)

160 USING ADOBE PREMIERE ELEMENTS 8 EDITOR
Applying effects
Last updated 8/12/2010
Adjust a clip’s anchor point
1 Select the clip in the Timeline.
2 In the Effects view, click the Edit Effects button.
3 Expand the Motion effect in the Properties view.
4 Drag the anchor point sliders for the Motion effect.
Superimposing and transparency
About superimposing and transparency
Superimposing describes the process of overlaying and combining multiple images. Video clips are completely opaque
by default, but superimposing them requires transparency. When you make clips on upper video tracks transparent,
they reveal clips on the tracks below.
In Adobe Premiere Elements, you can quickly and easily make entire clips transparent by using the Opacity effect. In
addition, you can apply any combination of opacity, masks, mattes, and keying to modify a file’s alpha channel, which
defines the transparent areas in a clip. More advanced keying effects let you make specific colors or shapes transparent.
Titles you create in Adobe Premiere Elements automatically include an alpha channel. You can also import files with
predefined transparent areas. Applications such as Adobe After Effects, Adobe Photoshop, Adobe Photoshop
Elements, and Adobe Illustrator® can save transparency. Not only will the file have an alpha channel, but it will also
conform to your project settings. See the respective user guides for information on saving files with transparency.
Adobe Premiere Elements uses the following transparency terms:
Alpha channel A channel that defines transparent areas for a clip. This invisible channel exists in addition to the visible
Red, Blue, and Green (RGB) color channels.
Opacity A setting that determines how opaque or transparent a clip is. (For example, 75% opacity equals 25%
transparency.)
Lowering opacity of upper video clip (left) reveals lower video clip (center), combining the two images (right)
Mask Sometimes used as another word for alpha channel; also describes the process of modifying an alpha channel.
Separated Red, Green, and Blue color channels (left); the alpha channel or mask (center), and all channels viewed together (right)
Matte A file or channel that defines the transparent areas of a clip. The matte determines the level of transparency in
the resulting image. In Adobe Premiere Elements, you use mattes in conjunction with the Track Matte Key.