On2 Technologies to Announce Second Quarter Earnings on July 28, 2005

On2 Technologies to Announce Second Quarter Earnings on July 28, 2005

NEW YORK, July 20 /PRNewswire-FirstCall/ -- On2 Technologies (AMEX:ONT) today announced that it will release its earnings for the second quarter of 2005 on July 28, 2005.

The company will host a conference call and a live webcast regarding its second quarter results at 5:00 p.m. EDT on July 28, 2005.

To access the live webcast, please use the following: http://www.vcall.com/CEPage.asp?ID=92863

Webcast Replay Available Until: 07/28/2006

If you prefer to dial-in, the dial-in information for the conference call is as follows:

Live Participant Dial In (Toll Free): 877-407-9210

Replay Number (Toll Free): 877-660-6853

Replay Passcodes (both required for playback):Account #: 286

Conference ID #: 162287

Teleconference Replay Available Until: 7/29/2005 11:59 PM

The earnings release and related financial information to be discussed during the conference call will be available on the company's website at: http://www.on2.com/releases.

About On2 Technologies, Inc., The Duck Corporation

On2 Technologies (AMEX:ONT) is a leading technology firm at the forefront of video compression. The company revolutionized digital media delivery with the creation of its advanced full-motion, full-screen, TrueMotion(R) VPx compression and streaming technologies. On2's TrueMotion codecs are used extensively in the video-on-demand, Internet media, videoconferencing, surveillance, and store-and-play markets. They operate with On2's own TrueCast Server and Player software, as well as third-party player and server products. On2's software is used by such leading companies as XM Satellite Radio, Macromedia, Sony, NTT, AOL, BBC, ABC News, Nullsoft, SeaChange International, China Netcom, NHK, and Nanwang Multimedia. The VP6 decoder has an installation base of millions through its inclusion in AOL 9 Media Player, Winamp 5, Viewpoint Media Player, and others. On2 licenses its software for use in set-top boxes, consumer electronics devices and wireless applications and offers high-level video encoding, customized technical support, and consulting/integration services. Located in New York City, the company has an office in Clifton Park, NY, and operations in Cambridge, UK. To contact On2 write to sales@on2.com or visit http://www.on2.com/.

Source: On2 Technologies, Inc.

CONTACT: Tim Reusing of On2, +1-646-292-3533

Web site: http://www.on2.com/ http://www.on2.com/releases http://www.vcall.com/CEPage.asp?ID=92863

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