Programmers Guide to Video Systems

We programmers like to think of video as a series of frames. Each frame, we imagine in our pleasant
dreams, consists of one whole picture, say 640×480 pixels, all snapped at a single instant of time, and we like to believe there are, say, 30 of these pictures per second. To play back the video, we just display one picture after the other, at 30 images per second. We blissfully assume that the image size of the picture (640×480) is totally standardized and represents the “complete” picture. And, we assume that the pixels are square: that 100 vertical pixels is the same distance on the display monitor as 100 horizontal pixels.

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