Roxio DVDit Pro HD, User Manual, Page: 199 / 222

Glossary
16:9
The aspect ratio of a widescreen TV screen (also expressed as 1.78:1 or 1.78).
4:3
The aspect ratio of a standard TV screen (also expressed as 1.33:1 or 1.33).
AACS
Advanced Access Control System. AACS is a powerful content protection system
supported by both Blu-ray and HD-DVD formats. Its inclusion is a prerequisite for
going to replication.
AC3, AC-3
Another name for Dolby Digital .
AIFF
Audio interchange file format. An uncompressed or compressed digital audio file
format developed by Apple Computer, Inc. Files have the extension
.aif or . aiff .
analog
A representation of an object that resembles the original. Film, VHS videotape, and
LP records are examples of analog storage media. The term exists only in contrast to
digital .
anamorphic
A widescreen (16:9 aspect ratio) image that has been squeezed horizontally to fit into
a 4:3 frame. When played back on a widescreen TV or on a PC, the image is stretched
to the correct proportions. On a standard TV, the image may be displayed in its
squashed form,
letterbox ed, or using pan and scan , depending on how the viewer has
set up the DVD player.
aspect ratio
The shape of an image, described as the ratio of the width to the height. For example,
a 4:3 image is one-third wider than it is tall. This ratio is usually expressed in whole
numbers (for example, 16:9 or 4:3). Compare with
pixel aspect ratio .
asset
Generic term for media file.
authoring
The process of collecting and linking individual media elements (video, audio,
graphics, and text) to create a DVD.
Authoring
media
A recordable DVD disc that is designed for use in professional DVD recorders.
Authoring discs let the DVD author write encrypted DVD files to the disc. Compare
with
General media .
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