IE9 can now play HTML5 video in both the industry-standard H.264 format and the newer WebM format. With the WebM Project’s release of WebM Components for IE9 (Preview), Windows customers running IE9 can play WebM videos in Web pages. IE9 is the only browser today committed to supporting both formats directly.
In the newly published Video Format Support demo at the IE Test Drive site, you can try out for yourself Web pages with both video formats on them in different browsers. You can see how Web site authors can adjust the experience on their pages based on the browser and operating system the visitor is using. You can also see the opportunity that HTML5 video offers publishers to make video an integral part of the Web experience, especially when it is fully hardware accelerated.
The WebM Project
The WebM project is dedicated to developing a high-quality, open video format for the web that is freely available to everyone. WebM is supported by Mozilla, Opera, Adobe, Google and more than seventy other publishers and software and hardware vendors.