Microsoft Silverlight will Support H.264 and AAC
At IBC 2008 Microsoft will be demonstrating a technology preview of H.264 video and Advanced Audio Coding (AAC) audio playback support in Silverlight, and H.264 authoring using Microsoft Expression Encoder and Windows Server 2008 for delivery. Until now, Silverlight has supported the SMPTE VC-1 and Windows Media formats, as well as MP3 for audio.
"We’ve always wanted Silverlight to support a variety of formats, so today we’re announcing that H.264 and AAC support will be available in a future version of Silverlight, which will offer content owners greater flexibility and choice to deliver video and audio" said Scott Guthrie, corporate vice president of the Developer Division at Microsoft.
Microsoft Silverlight is a cross-browser, cross-platform, and cross-device plug-in for delivering the next generation of .NET based media experiences and rich interactive applications for the Web.
Source: Microsoft