ViewCast's Four-Channel Osprey-440 Video Cards Expand IES' Interactive Training Simulations for Law Enforcement, Military

DALLAS — April 18, 2005 — ViewCast Corporation (OTCBB:VCST - News), today announced that Colorado-based IES Interactive Training, provider of use-of-force training products that develop judgment and decision-making skills for law enforcement, military, and government professionals, is using ViewCast's new Osprey-440 four-channel video cards in their applications. IES, which has used Osprey cards since 2002, needed to increase channel density to support a unique new system design that calls for smaller motherboards with fewer PCI slots.

"We first chose ViewCast's Osprey cards because of their quality and stability, and have used three different models over the past several years with great success," said Jason LaMons, director of research and development at IES. "Most recently, we needed a multi-port card, which ViewCast already had in production. Through the use of ViewCast's new Osprey-440 we are able to meet all of our specific requests for the feature set and performance expectations in its final design. It was the perfect time and solution."

IES develops several interactive training simulators. One simulator is the MILO Training & Presentation System, which utilizes video and graphics to train law enforcement, military, and government personnel on firearms, tactics, and agency policies for lethal and non-lethal use of force. This simulation is completed by presenting video and graphics on a large projection screen and requires that the trainee interact with the on-screen stimuli through proper verbal commands, threat assessment, tactics, and weapons usage.

Simulator systems developed by IES require that at least three video capture sources simultaneously perform several real-time video capture functions, including video capture-to-file for later playback and capture-to-memory for video analysis or for overlaying video on top of other video. The three video channels make it possible for the company to provide features that detect trainee weapon usage, provide simulated flashlight or low-light training, and record video and audio of the trainee in a training session for later review.

The Osprey-440 allows IES to incorporate the advanced features of the system into a single video capture card, resulting in a smaller, more portable system that is still built around scalable and replaceable components. IES is developing several new features that will utilize the Osprey-440's fourth input channel.

"It's always interesting to learn about new and creative applications for our Osprey cards, and these interactive training simulators from IES have many innovative, interesting features," said George Platt, president and chief executive officer at ViewCast. "We're happy to count IES as a leading-edge developer using the Osprey-440, and look forward to seeing how other OEMs will expand their video system offerings by taking advantage of this innovative four-channel configuration."

More information about ViewCast�s range of video products is available at www.viewcast.com.

Also, visit ViewCast events page for an NAB virtual booth �Sneak Preview.�

IES Interactive Training

IES Interactive Training, a wholly owned subsidiary of Arotech Corporation (Nasdaq:ARTX - News), is a manufacturer of interactive digital training solutions to corporations, government agencies, military and law enforcement professionals around the globe. By providing unique judgment-driven systems designed by an experienced team of professionals, IES sets the standard for interactive simulation training. Flagship products include the Range 3000 XP4, a multimedia simulator; the A2Z Classroom Trainer for interactive, real-time learning; and the Range FDU, firearm diagnostics unit. For further information about IES, please visit the company's Web site.

About ViewCast Corporation

ViewCast� develops video and audio communications products for delivering content dynamically via a variety of network types and protocols. These products include Osprey� Video capture cards, Niagara� video encoders/servers and ViewCast IVN enterprise software and systems. Our products address the video capture, processing and delivery requirements for a broad range of applications and markets. ViewCast also provides professional IT services focused on merged data and video networks through its wholly owned subsidiary Delta Computec Inc.

Visit the company's Web site (http://www.viewcast.com) for more information.

Safe Harbor Statement
Certain statements, including those made by George Platt, contain "forward-looking" information within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which reflect the company's current judgment on certain issues. Because such statements apply to future events, they are subject to risks and uncertainties that could cause the actual results to differ materially. Important factors which could cause the actual results to differ materially include, without limitation, the following: the ability of the company to develop and market new products as technology evolves, and increased competition in the video communications and IT services market. For a detailed discussion of these and other cautionary statements and factors that could cause actual results to differ from the company's forward-looking statements, please refer to the company's reports on Form 10-KSB and 10-QSB on file with the Securities and Exchange Commission.

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