decorative banner

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. Image Mask Settings dialog box
  4. Click OK. To preview the transition, see Previewing transitions.
  5. The Image Mask transition reveals the B clip through the white pixels of a selected image file, and the A clip through the black pixels.
    The Image Mask transition reveals the B clip through the white pixels of a selected image file, and the A clip through the black pixels.