Microsoft Silverlight

• Company: Microsoft
• Website: http://www.microsoft.com/silverlight/

Silverlight is Microsoft's rich internet application platform. This is a list of the container and codec formats that Silverlight can play back natively:

Containers:

• presumably ASF

Video Codecs:

• WMV1: Windows Media Video 7
• WMV2: Windows Media Video 8
• WMV3: Windows Media Video 9
• WMVA: Windows Media Video Advanced Profile, non-VC-1
• WMVC1: Windows Media Video Advanced Profile, VC-1
• H.264: Announced for the next version of Silverlight

Audio Codecs:

• WMA 7: Windows Media Audio 7
• WMA 8: Windows Media Audio 8
• WMA 9: Windows Media Audio 9
• MP3: ISO/MPEG Layer-3
  • Input: ISO/MPEG Layer-3 compliant data stream
  • Channel configurations: mono, stereo
  • Sampling frequencies: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, and 48 kHz
  • Bit rates: 8-320 kbps, variable bit rate
  • Limitations: "free format mode" (see ISO/IEC 11172-3, sub clause 2.4.2.3) is not supported.
• AAC: Announced for the next version of Silverlight

Tools

Microsoft's tool Expression Encoder 1.0 can convert A/V files to the Silverlight format. A trial version is available at http://www.microsoft.com/Expression/products/download.aspx?key=encoder.

References

• Supported Media Formats and Protocols (at MSDN)
• Announcement concerning H.264 and AAC support