A brief introduction ofReal Time Streaming

Protocol

Presented by

Rongjian Li

Roadmap

What is RTSP? Why we need RTSP? How RTSP works?

What is RTSP ? RTSP is a network control protocol

to ESTABLISH and CONTROL streaming media sessions between client and server. 

The transmission of streaming data itself is NOT a task of RTSP. It is a protocol in application layer.

Like a TV remote !

Motivation

Internet Video On Demand Internet VCR

Requirements like pause, record etc

Integration with web architecture A new application level protocol for

media files

RTSP - Architecture

REF: http://www.informatik.uni-bremen.de/~jo/teaching/cpipmm/slides/streaming-00.pdf

RTSP - Operations SETUP establish transport ANNOUNCE change description of media

object DESCRIBE get description of media object PLAY start playback, reposition RECORD start recording REDIRECT redirect client to new server PAUSE halt delivery, but keep state SET PARAMETER device or encoding control TEARDOWN remove state

RTSP – Example : Setup

www.cs.columbia.edu/~hgs/teaching/ais/slides/RTSP.pdf

Client Server

RTSP – whole procedure

www.cs.columbia.edu/~hgs/teaching/ais/slides/RTSP.pdf

Questions?