Adobe 25510629 User Guide - Page 71
Finished, composited scene
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TIP 32 bit AVI with Alpha 4. The clip is in the Output Clips folder, or the path that you set for it. Assign the clip to the overlay as you would any source. 5. Proceed with any resizing, repositioning, and so on. If you're working with a photographic image, a quick way to isolate the image with alpha all around is to shoot it against a greenscreen and then delete that background in Photoshop. If you want to have two or more objects in the foreground, you can put them in a single image. Be aware, however, that they will move as a unit if you change their size, position, or orientation. Finished, composited scene The following is an example of what the finished, composited scene looks like. NOTE This example illustrates a common problem that ruins the illusion of the composited scene. The subject's toes are in a position where the overlay does not cover them. You have several options for remedying the problem: Include the area within the pink circle as part of the overlay image. Use the Mask Painter to make that region of the input clip transparent. For more information, see "Cropping and spot masking the source clip" on page 83. Reposition the subject a few pixels to the left. For more information, see "Changing the position and scale of a layer plane" on page 92. Depending on the scene and where the subject walks, you may also be able to use the Input Cropping controls. For more information, see "Cropping the edge of a frame" on page 84. Creating and assigning sources and virtual sets 71