RTSP

RTSP is the "Real Time Streaming Protocol" developed by the IETF and published as [RFC 2326]. RTSP is a protocol for use in streaming media systems which allows a client to remotely control a streaming media server, issuing VCR-like commands such as "play" and "pause", and allowing time-based access to files on a server.

RTSP servers typically use RTP as the protocol for the actual audio/video data.

For more information about RTSP, see [rtsp.org]