2.2.5.2.3 Program Parameters URL Attribute ("a=pgmpu")

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The pgmpu (program parameters URL) attribute specifies a data URL, as specified in [RFC2397]. Such URLs are useful for encoding binary data or other kinds of data that use a syntax that can conflict with the SDP syntax.

The ABNF syntax for this attribute is as follows:

 pgmpu     = "a=pgmpu:" 
             dataurl              ; defined in [RFC2397] section 3

As specified in [RFC2397], the data URL specifies the kind of data it encodes using a MIME-format media type. RTSP Windows Media Extensions specify two different MIME types for use on data URLs.