[Live-devel] RTSP Metadata

[Ross Finlayson]

The payload format defined by the ‘ONVIF’ document (section 5.1.2.1.1) is not described in an IETF RFC, so it is not an official Internet standard.  However, you can probably implement it using our “SimpleRTPSink” class.

Please read:
	http://live555.com/liveMedia/faq.html#liveInput-unicast

You will need to define and implement a “FramedSource” subclass that delivers - by reimplementing the “doGetNextFrame()” virtual function - a piece of ‘metadata’ that you wish to stream.  You will also need to define and implement your own subclass of “OnDemandServerMediaSubsession”, and reimplement the following virtual member functions:
	- createNewStreamSource()
	- createNewRTPSink()
Your implementation of "createNewRTPSink()” should create (and return) a “SimpleRTPSink” object, by calling:
	SimpleRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic, 90000, “application”, “vnd.onvif.metadata”);

(Perhaps change the last parameter from “vnd.onvif.metadata” to one of the other values listed in section 5.2.2.4 of the ‘ONVIF’ document, depending on what kind of metadata you end up streaming.)


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/