Roxio DVDit Pro HD, User Manual, Page: 206 / 222

Glossary
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Jacket
Picture
A picture that shows the disc’s First Play menu/title. The Jacket Picture is displayed
on-screen when the disc is stopped in a player that supports the Jacket Picture format.
JPEG
A lossy compressed bitmap graphics format developed by the Joint Photographic
Experts Group. Files have the extension . jpg or . jpeg .
k
Standard abbreviation for kilo (thousand). Used as a prefix in units of measurement
such as kbps (kilobits per second) and kHz (kilohertz).
K
Standard abbreviation for 1,024 (2
10
). Used as a prefix in measurements of computer
bytes.
KB
Kilobyte. 1,024 (2
10
) byte s.
kbps
Kilobits (1,000 bit s) per second. A unit of measurement for bit rates.
kHz
Kilohertz. 1,000 cycles per second. A unit of measurement for frequencies.
letterbox
A method for displaying widescreen (16:9) material on a standard (4:3) TV screen.
The entire image is displayed in its proper aspect ratio across the center of the screen.
Horizontal black bars (mattes) are added to the top and bottom of the image to fill the
gaps between the image and the top and bottom edges of the screen. Compare with
pan and scan .
lossless
Refers to compression methods that do not throw away any data.
lossy
Refers to compression methods that involve throwing away some data to achieve very
high compression levels.
M
Standard abbreviation for mega (million). When used in units of measurement such as
bits or Hertz, it means one million (1,000,000 or 10
6
). When used for measuring bytes
of computer data, it means 1,048,576 or 2
20
.
MB
Megabyte. 1,048,576 (2
20
) byte s. A unit of measurement for computer data.
Mbps
Megabits (1,000,000 bit s) per second. A unit of measurement for bit rates.
menu
A screen containing buttons that link to specific locations in a DVD-Video
presentation. The viewer activates buttons to display the linked material.
MHz
Megahertz. 1,000,000 cycles per second. A unit of measurement for frequencies.
motion
menu
A DVD menu that has a video background and/or animated button images.
movie
A title containing a single video clip. It may also have audio and subtitle tracks. A
movie can contain up to 99 chapter points.
DVDit_Pro_HD.book Page 206 Monday, September 25, 2006 2:32 PM