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Digital Compositing for Film and Video by Steve Wright

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CHAPTER 10

Video

Film is a wonderfully simple medium in concept. A shutter flicks open for a fraction of a second, and a frame of film is exposed, capturing a moment of time in full color. If something happens to be moving, it naturally leaves an agreeable streak on the film to signal its motion. Video is not nearly so simple. Video suffers from a desperate need to pack the maximum picture into the minimum signal so it can be broadcast over the airwaves. All of the moving pictures must be squeezed into a single rapidly gyrating radio wave. This one fantastically high-pitched wave must carry a black and white picture, an overlay of all of its color, plus a little sound track tucked in on the side.

Even though one frame of video is packed into ...

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