Chapter 13. Superimposing Clips
In Chapter 5, “Creating a Program,” you learned that you can have as many as 99 video tracks in the timeline. Here’s where you start using them—at least, some of them.
By layering clips and adjusting their opacity, you can combine them visually in much the same way as you would mix audio. You can fade one image into another or blend several images together. Some transparency settings compare the attributes of each layer, such as brightness, and blend them according to a kind of formula—which Photoshop and After Effects users will recognize as layer modes. Other settings let you assign the transparent areas of a clip based on its brightness or color. Or transparent areas can be determined by the clip’s own alpha ...
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