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Apple Pro Training Series DVD Studio Pro 4, Second Edition by Jem Schofield, Adrian Ramseier, Martin Sitter

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Glossary

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4:3  The most common video aspect ratio, used for NTSC and PAL video standards. Also known as the 1.33 aspect ratio. See also aspect ratio.

16:9  The widescreen aspect ratio supported by the DVD-Video specification. Also known as the 1.78 aspect ratio. See also aspect ratio.

A

AC-3 audio  Compressed audio format developed by Dolby Laboratories. Also known as Dolby Digital audio. Supports single-channel through 5.1 surround sound configurations.

action safe area  An area close to the edges of the screen, which contains information that is not as important or may be cut off on some televisions.

active area  Rectangular area that defines the part of the overlay graphic used for a button. Also defines a button’s “hotspot” that can be ...

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