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Capturing motion on the Web.

Several software programs are available for streaming media. Each Webcaster uses one or more systems, choosing from programs like RealPlayer, QuickTime, NetShow, CosmoPlayer, Shockwave Player, InterVU, VivoActive and others.

RealPlayer's features include the ability to automatically distinguish between audio and video, opening a movie window if it detects video. It doesn't cost anything to download the software, but the more advanced version of RealPlayer costs $30. In any case, more than 100,000 copies of RealPlayer are downloaded by Web surfers each day.

Some 150,000 hours of live content are reportedly produced with Real/Audio and RealVideo each week. Currently, more than 30 U.S. TV stations use RealVideo for live Internet feeds. In addition, RealPlayer is currently used for more than 650 live audio Webcasts. Reportedly, there are now more than 1,300 audio broadcasters delivering streaming media via the Internet, more than 110 of which are dedicated solely to Internet delivery of content. '

Apple's QuickTime allows one to display Web sites in 3-D, and it also allows for virtual reality applications. It is a free streaming media product for Web users. The common frame sizes for Web-designed QuickTime movies are: 160 pixels by 120 pixels for movies intended for download with conventional modems; 240 pixels by 180 pixels for movies intended for ISDN download; and 320 pixels by 240 pixels for movies intended for download with cable modems, T1 phone lines* and local networks. With QuickTime, one can achieve a frame rate of 10 frames per second with a conventional modem and frame rates of between 12 and 15 frames per second with ISDN and other advanced technologies.

The VivoActive technology, used in NetShow, incorporates a timeline feature that allows the Web developer to insert markers into the content stream at set intervals; this enables Web users to essentially fast-forward the stream. VideoActive also incorporates Siren coded technology (licensed from PictureTel), which enables FM-quality sound.
COPYRIGHT 1998 TV Trade Media, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1998, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

 
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Title Annotation:World Wide Web; Webcasting
Publication:Video Age International
Article Type:Brief Article
Date:Oct 1, 1998
Words:318
Previous Article:International Webcasters Association gears up.
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