Video Conferencing White Papers
Digital Video for the Next Millenium
Overview The simplest definition of digital video is the representation or encoding of an analog video signal in digital bits for storage, transmission and display. If you have access to the World Wide Web, chances are you have viewed digital video files. Digital video files pervade the analog television and 70 mm film world. Digital video is a growing presence in the academic arena, from digitized course lectures to archival footage housed in the campus library. Video conferencing — for collaboration, Internet-based communication and teaching — is an important digital video service. Digital video-on-demand, another key service, is defined for this white paper as the creation, storage, transmission and display of archived digital video files in an IP network environment. Digital video may be streamed to a computer, so that playback begins before the entire video file is received, or non-streamed, requiring that the entire file be downloaded be playing. Streaming videos may be served as multicast or unicast streams. Video-on-Demand generally refers to unicast, where a single video file is requested by a user and streamed to the user's computer for playback. Multicast — the transmission of a single digital video file to multiple users in a scheduled environment — is included in this digital video-on-demand white paper for convenience, since most vendors providing on-demand video files to a single user (unicast) also provide products for multicast of both stored files and live broadcasts.
| Publisher | Video Development Initiative (ViDe) | File Format | HTML |
|---|---|---|---|
| Date Published | August 2003 | Downloads | 8 |
| Format | White Papers | ||
| Topics | |||
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