The RTP server on the DME serves live or stored content using the RTSP/RTP protocol. You can play the stream in StreamPlayer, QuickTime, or VLC using a URL similar to this:

Normally the default port 554 is assigned to the RTSP/RTP server, so the port number is optional in the URL. If an alternate port is assigned to the RTSP/RTP server, then the port number must be entered. There are two use cases for serving RTSP. Out-4 should be used for optimal stream stability, but if many simultaneous users are expected, the equivalent Out-3 is preferred. There are three possible protocols used for RTP serving: UDP; TCP using RTSP interleaved; TCP using HTTP tunneling. Out-4 supports all three of these options while Out‑3 does not support HTTP tunneling. This difference may affect which RTSP/RTP server to use.

Note that this output option requires no explicit configuration on the DME but is available for all live content present on the RTP streaming server, whether brought directly into the RTP server or Pushed from the Multi Protocol server using an internal Out-10. A live publishing point includes the ".sdp" extension in the publishing point name so an example of a live publishing point is:

There are two options for serving RTSP. Out-4 must be used if the VOD content contains MPEG-4 Part2 video or PCM audio. Stored content is accessed using the filename of the content. Examples of stored URLs are:

 

Objective: This use case explains how to allow a stream acquired through use case In-8 < Unicast/Multicast RTP or In-3 < RTP Auto Unicast, or most commonly via an internal Push form the Multi Protocol server (Out-10), to be served via an RTSP server from the DME to clients that support RTSP streams. Additionally this server is commonly used for delivering VOD content.