RTSP Protocol
The Real-Time Streaming Protocol (RTSP) is a stateful protocol defined in RFC 2326 (1.0) and RFC 7826 (2.0). It defines methods including OPTIONS, DESCRIBE, SETUP, PLAY, PAUSE, RECORD, ANNOUNCE, GET_PARAMETER, SET_PARAMETER, and TEARDOWN for controlling streaming media sessions. RTSP URLs follow the rtsp:// scheme. Sessions are established before streaming begins and media is transmitted via RTP/RTCP on separate channels.