User`s guide

Chapter 4 Working with Effects and Filters
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Creating Wipes with the PixelChooser
This is an example of what you can achieve with the PixelChooser feature. You can easily
create wipes from one image to another using the PixelChooser’s region controls and the
Make Alpha Key filter. See “BCC Make Alpha Key” on page 311.
To create wipes:
1. Create two tracks in the timeline and place the starting image on the top track and the
transition media (the ending image) on the bottom track.
2. Apply the Make Alpha Key filter to the top track. In the Controls window, set Alpha
From to Full On.
3. You can now animate the PixelChooser’s region controls to create a wipe between the
source image and the transition image.
To create a soft-edged wipe:
• Adjust the Blend controls.
The wipe in the example below was created using the Distance to Point region type, setting
the center point in the top left corner, and animating the To value until the flower image fills
the screen.
Previewing Effects
You can preview effects as you apply them to individual tracks and entire compositions, or
as you apply animation, to see how the rendered output appears.
When working on one track in a complex composition, you can preview the isolated element
more rapidly by closing the Composite window and opening a Preview window for the track.
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