How it works...

Real-time streaming protocol:

As with SIP (which is used for signaling, while RTP is used for the transport of the media), the streams controlled by RTSP may use any transport protocol; in many cases, they also use RTP. The protocol is intentionally similar in syntax and operation to HTTP and uses the same syntax.

The most common RTSP methods (commands) are (C-Client, S-Server).

Command

Direction

Function

OPTIONS

C to S or S to C

Determines the capabilities of the server/client

DESCRIBE

C to S

Gets a description of the media stream

GET_PARAMETERS

C to S

Retrieves the value for parameters in the URI

ANNOUNCE

C to S or S to C

Announces a new session's description

SETUP

C to S

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