2.2.3 Extensions to RTSP

This section defines extensions to RTSP, in addition to the extensions defined in [DLNA].

RTSP headers not defined in this section are defined in [DLNA], [RFC2326] or [RFC2616]. In cases where an RTSP header is defined by multiple specifications, the definitions provided by [DLNA] take precedence over definitions in [RFC2326] and [RFC2616]. Definitions in [RFC2326] take precedence over definitions in [RFC2616].

This section defines the syntax of the RTSP headers by using the ABNF syntax, as specified in [RFC5234]. Any ABNF syntax rules that are not specified in [RFC5234] use the ABNF extensions that are specified in [RFC2326].