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For More Information (Windows Media Format SDK)

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[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

  • For the latest information about known issues with the Windows Media Format SDK, see the release notes posted on the MSDN Library Web site.
  • For features, articles, and answers to frequently asked questions about streaming media in general and the Windows Media SDKs in particular, see the Windows Media Developer Center at the Microsoft Web site.
  • For more information about obtaining a license for the Windows Media Format SDK, see the Windows Media Licensing page at the Microsoft Web site.
  • For detailed, low-level descriptions of the data objects that make up ASF files, download the ASF specification from the Microsoft Web site.
  • For features, articles, best practices, and answers to frequently asked questions about digital rights management (DRM) and Windows Media Rights Manager, see the Technical Articles on the Digital Rights Management page at the Microsoft Web site.

About the Windows Media Format SDK