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To apply a regional matte:
1. Open the Video Filters dialog box and place the filter you want to work
with in the Applied filters list box.
2. Click the Region button to open the Region dialog box (not available for
all filters).
3. Select an option from the Mask drop-down list to determine what kind
of matte you want to use.
4. Move the Threshold slider to control the degree of the effect. You can
also choose to invert the area being affected by selecting the Invert
option.
5. Click OK to return to the Video Filters dialog box.
REGION DIALOG BOX
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1. Mask window shows a frame from the mask.
2. Preview window shows a frame from the selected clip and the parts affected
by the filter.
3. Type drop-down box lets you select the key type to use in the Mask window.
4. Mask drop-down box lets you select the kind of matte to use.
5. Enable filter (start position) enables the filter applied to the clip starting
from the current position.
6. Threshold slider determines the sensitivity to bright and dark pixels.
7. Matte opens the Select Image Matte dialog box.
8. Preview Playback Options opens a dialog box where you can specify
where to preview the filter/effect.
9. Play in Preview Window or External Monitor outputs the results in Video
Editor's Preview and/or an external monitor.
10. Invert region area makes all colors except the selected color the key color.
11. RGB displays the RGB values of the current threshold setting.
12. Enable mask (start position) enables the mask applied to the filter starting
from the current position.
VIDEO EDITOR: CHAPTER THREE
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