Everything Engineering
Login:   Password:
Not Register?    Sign Up NOW!
Date: 30 August 2008
Google
 
Video solutions  
Search Country   Reset filter

Product Name: Video solutions

Product Description

Videoconferencing

Videoconferencing provides low quality two-way (duplex) video and audio between remote sites, often over a narrow bandwidth link. Defined by the ITU H.320 standard, both software and hardware compatible solutions are available for connecting over single or multiple 64kbps ISDN channels. The uptake of this technology has grown steadily within many market sectors as a flexible and cost-efficient method of delivering live two-way video. Most notable has been its use within media to provide "live via videophone" reports, although other areas also include government, military and commercial sectors.

For videoconferencing solutions see:

Store-and-forward video

This technique allows a user to capture high-quality, video normally on to a PC or Mac, where it is then compressed for transmission over a link. The level of compression determines the quality of picture received at the other end and the time taken to transmit. Typically, the latest compression techniques, mpeg-4 or a derivative, allow one minute of broadcast-quality video to be transmitted in as little as 10 minutes over a single 64kbps channel. Systems can also provide live modes, but picture quality degrades significantly to videoconferencing levels. Typically used by broadcasters, with some government applications.

For store-and-forward video solutions see:

Video surveillance

Video surveillance provides a remote one-way video feed, often at a low frame rate but at high resolution for situation monitoring. Connections to the remote site can be either automatically triggered via motion sensor or alarm trip, or simply "dialled in". With an expanded network of remotely steered cameras it is possible for security conscious organizations to maintain a high level of surveillance with a minimal on-the-ground presence.

Video streaming

A one-way video feed distributed via the Internet or corporate LAN using Internet Protocol (IP) and displayed on local viewing software, such as Realplayer, Windows Media Player or Quick Time. Quality varies depending on the compression technique (eg mpeg-4), target audience and application. Typically, "live" footage is at a similar level to videoconferencing, whilst pre-recorded tends to offer multiple streaming rates allowing higher quality over broadband links. As a method for low-cost point-to-multipoint (from one to many) video distribution, video streaming has seen a rapid uptake. It is now used for covering sporting events, concerts and, of course, breaking news stories.

For video streaming solutions see:

Home | Members.Benefit | Privacy.Policy | Bookmark.This.Page | Contact.Us
© 2006 - 2007 4engr. All Rights reserved |Recommended Engineering Sites:| Center for Respect of Life and Environment | Internet Dictionary|Enginering intent(Engineering Events) | Map Archive