RTSP, or Real-Time Streaming Protocol, is a network control protocol designed for streaming media. It allows clients to control the playback of media streams, enabling functions like play, pause, and stop. RTSP is commonly used in applications that require real-time data transmission, such as video conferencing and live broadcasts. The protocol works by establishing a connection between a client and a media server, facilitating the delivery of audio and video content over the internet. RTSP is often used in conjunction with other protocols, such as RTP (Real-Time Protocol), to ensure smooth and synchronized media playback.