The Real Time Streaming Protocol (RTSP) is a network control protocol designed for use in entertainment and communications systems to control streaming media servers. The protocol is used for establishing and controlling media sessions between end points
Presented here are the basic RTSP requests. The default transport layer port number is 554.
A DESCRIBE request includes an RTSP URL (rtsp://…), and the type of reply data that can be handled. The default port for the RTSP protocol is 554 for both UDP and TCP transports.