What is the relationship between RTP, RTCP and RTSP?
RTP is a transport protocol for the delivery of real-time data, including streaming audio and video. RTCP is a part of RTP and helps with lip synchronization and QOS management, among others. RTSP is a control protocol that initiating and directing delivery of streaming multimedia from media servers, the “Internet VCR remote control protocol”. RTSP does not deliver data (though the RTSP connection may be used to tunnel RTP traffic for ease of use with firewalls and other network devices). RTP and RTSP will likely be used together in many systems, but either protocol can be used without the other. The RTSP draft contains a section on the use of RTP with RTSP.
