Configuring Text Streams
[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 It has been superseded by Source Reader and Sink Writer.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.]
Text streams are essentially the same as custom arbitrary streams. There is no configuration information associated with a text stream to identify the type of text encoding, so the writer object cannot verify samples.
To configure a text stream, you must ensure that the WM_MEDIA_TYPE structure contains a major media type of WMMEDIATYPE_TEXT. You must also set a bit rate and buffer window for the stream.
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