2.2.5.2.3.1 application/vnd.ms.wms-hdr.asfv1

A data URL with the MIME type "application/vnd.ms.wms-hdr.asfv1" MUST be present at the SDP session level. The data URL MUST use the base64 encoding mode. The data URL MUST encode an ASF file header representing the content being described by the SDP.

The ASF file header that is generated by the server MUST conform to all requirements in the ASF specification [ASF]. The ASF file header MUST describe the content that the server is able to stream. For example, if the content consists of one audio stream and one video stream, then the ASF file header MUST contain an ASF Properties Object [ASF] section 3.2 for each of the two streams.