Stream Prioritization
[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 It has been superseded by Source Reader and Sink Writer.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.]
When you create an ASF file, you can specify a priority order for its constituent streams. If you stream a prioritized file and the available bandwidth is not enough to deliver all of the streams, the reader will drop streams in reverse priority order. In this way you can guarantee that the most important streams in your file will not be dropped due to network difficulties.
Stream prioritization is configured with a stream prioritization object and added to the profile. A profile can contain only one stream prioritization object.
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