Using the Image Mask transition

You can use a black-and-white bitmap image as a transition mask in which image A replaces the black in the mask, and image B replaces the white in the mask. If you use a grayscale image for the mask, pixels containing 50% or more gray will be converted to black, and pixels containing less than 50% gray will be converted to white. Many third-party image collections can be used with this transition.

To add an image mask as a transition:

1 Drag the Image Mask transition from the Special Effect folder in the Transitions palette to the Transition track of the Timeline. The Image Mask Settings dialog box appears.

2 Click Select Image, and double-click the image file you want to use as a transition mask. The image you selected appears in the Image Mask Settings dialog box.

3 Click OK. To preview the transition, see Previewing transitions.

Adding Transitions > Changing transition settings > Using the Image Mask transition