S-Video

A method of carrying video information on a cable that separates luminance and chrominance on separate wires, thereby providing higher video quality than composite video. See also Chrominance, Luminance and Composite Video.

sensory rich information

Information that consists of multiple sensory data (video, audio, olfactory, and /or tactile.)

set-top videoconference device

A videoconference appliance which is designed to be placed on top of a TV (hence the name) typically, although this is not the only way to use it. It mostly includes a Pan/Tilt/Zoom camera, and is controlled with a remote. Examples are a Polycom Viewstation, a Tandberg 880 or a Sony PCS-1600.

SIP

SIP stands for Session Initiation Protocol. SIP is a text-based protocol, similar to HTTP, for initiating communication sessions such as video and audio conferencing, telephony, instant messaging, presence, and events notification (including uses in interactive gaming and virtual reality.)

streaming media

Sending video or audio over a network as needed, such as Real Audio/Video or Microsoft NetShow, instead of forcing the user to download the entire file before viewing it. Typically a few seconds of data is sent ahead and buffered in case of network transmission delays. (Although some data is buffered to the hard drive, it is written to temporary storage and is gone once viewing is complete.)