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Glossary 71
H
hinting Hinting creates a track for each streamable media track in the file that tells
QuickTime Streaming Server how and when to deliver each frame of media. The hinting
process performs in advance the required calculations, allowing QTSS to serve up a larger
number of streams. Hinting also allows new codecs to be used without the need to upgrade
the server.
HTML (Hypertext Markup Language) The code inserted in a file to be displayed on a
web browser page. The markup tells the web browser how to display a web page’s words and
images for the user.
HTTP (Hypertext Transfer Protocol) An application protocol that defines the set of
rules for linking and exchanging files on a network.
I
IEEE The Institute of Electrical and Electronics Engineers, Inc., an organization dedicated to
promoting standards in computing and electrical engineering.
Instant On An advance in Apple’s patent-pending Skip Protection technology that
dramatically reduces buffer, or wait, time for an instantaneous viewing experience with
streaming video on a broadband connection.
IP (Internet Protocol) A connectionless protocol used to transmit packets of data from
one machine to another. TCP and UDP use IP for their host-to-host data communications.
IP address A unique numeric address that identifies a computer on the Internet.
IP subnet A portion of an IP network, which may be a physically independent network
segment, which shares a network address with other portions of the network and is
identified by a subnet number.
ISP (Internet service provider) A business that sells Internet access and often provides
web hosting for ecommerce applications as well as mail services.
J, K, L
JavaScript A scripting language used to add interactivity to web pages.
key frame A sample in a sequence of temporally compressed samples that does not rely on
other samples in the sequence for any of its information. Key frames are placed into
temporally compressed sequences at a frequency that is determined by the key frame rate.
key frame rate The frequency with which key frames are placed into temporally
compressed data sequences.
LAN (local area network) A network maintained within a facility, as opposed to a WAN
(wide area network) that links geographically separated facilities.
LL0329.book Page 71 Wednesday, November 20, 2002 2:09 PM