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70 Glossary
broadcast user A user who has permission to broadcast to the streaming server. The
broadcast user name and password are set in the General Settings pane of Streaming Server
Admin and are used in conjunction with announced broadcasts. It is not necessary to create
a broadcast user for UDP broadcasts.
browser plug-in Software that you attach to a browser to enable it to display specific data
formats.
byte Eight bits.
C
client The user-side software or computer used to display streaming media.
codec Any technology for compressing and decompressing data. Codecs can be
implemented in software, hardware, or a combination of both.
CVS Concurrent Versions System, a programming code management system.
D, E
data rate Amount of information per second.
DNS (Domain Name Service) A service that translates host names to IP addresses.
DSL (digital subscriber line) A broadband data transmission technology that operates
over telephone lines.
DV (digital video) A digital tape-recording format using approximately 5:1 compression to
produce Betacam quality on a very small cassette.
F, G
firewall Software that protects the network applications and networking stack of a server.
IP Firewall service, which is part of Mac OS X Server software, scans incoming IP packets and
rejects or accepts these packets based on a set of filters you create.
FireWire A hardware technology for exchanging data with peripheral devices, defined by
IEEE Standard 1394. Also called iLink.
frame A single image in a movie or sequence of images.
frame rate In a movie, the number of frames per second.
FTP (File Transfer Protocol) A protocol that allows computers to transfer files over a
network. FTP clients using any operating system that supports FTP can connect to a file
server and download files, depending on their access privileges. Most Internet browsers and
a number of freeware applications can be used to access an FTP server.
LL0329.book Page 70 Wednesday, November 20, 2002 2:09 PM