BOOK_CONTENT
From Video and Media Servers: Technology and Applications, Second Edition

Overview

All media server architectures can be looked at as being constructed from elements, or subsystems, of an overall system. In this chapter, we will be concerned with the front end of a specialized and unique system, the video server. While referring to this type of media server as simply a "video server," we understand and accept that video servers generally have inputs and outputs that include a media makeup of video, multiple audio channels, and usually at least some form of control interface.

A video server must essentially allow for the input, storage, and retrieval of video data in real time. Although the internal architectures of video servers will vary significantly from manufacturer to manufacturer, the basic principles of the video server remain essentially the same.

We can see in Figure 8-1 that the video server is comprised of an input side, a processing/storage section and an output side. Video and audio inputs and outputs can be of any flavor, including composite and component, analog or digital. The control and data I/O can be a mixture of timecode, machine control, or network interfaces.


Figure 8-1: Basic video server structure.

The makeup of the video server subsystems, including the interface to and between each subsystem, is the major factor in a video server's performance. The more a video server system is flexible in each of the subsystems, the higher the degree of applications it has.

Input and Output

The formats typically found in video server inputs and outputs vary depending...

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Products & Services
Video Servers
Video servers enable distribution of video signals over networks including local area networks (LANs) and the Internet.
Digital Video Recorders
Digital video recorders record and store video camera output in digital form on disk.
Video Connectors
Video connectors are electrical connectors used for carrying analog or digital data and video signals. They can be used on the end of a cable, as part of an electronics device, or with another device with a video input or output.
Audio Visual Services
Audio visual service providers design, integrate, and install multimedia equipment for corporate, production, and broadcasting applications.

Topics of Interest

Overview The media servers discussed up to this point remain within the "video server" definition because they deal essentially with video and audio, vertical blanking interval (VBI) data, and the...

Processor Speed and Functionality Processor systems have become more reliable and more powerful. The architectures of the video I/O subsystems now provide more flexibility, including such...

Overview Capacity, storage, memory. Three similar terms regularly associated as a primary metric in video server specifications. The terms understandably are the easiest to market, yet seldom do they...

HASAN SARPER, MOHAMMED AHMED SHAH, I?IK AYBAY Computer Enginnering Department, Eastern Mediterranean University, Magosa, North Cyprus E-mail:{hasan.sarper, ahmed.shah, isik.aybay}@emu.edu.tr This...

Factors Contributing to the Media Server Evolution The enabling technologies behind video servers make DTH, news feed distribution, pay-per-view, video-on-demand and other terrestrial commercial...