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Output Stream Configuration
DME Admin Guide 135
Playlist Conventions
When generating HLS streams it is important to understand the conventions used for
creating playlists so they can be played via an HTTP URL.
RTP Relay Overview

To access the RTP Relay functionality:
1. Navigate to
Output Configuration
>
RTP Relay
.
Use this page to configure or edit relays. A streaming RTP relay forwards an RTP stream
from a source to either a multicast or multiple unicast destinations. One of the primary
functions of a relay is to minimize the usage of network bandwidth across limited bandwidth
WAN links by receiving an single incoming stream and outputting either a multicast stream
or serving multiple unicast streams.
Relays can also be used to distribute the load across multiple servers. The incoming stream
can be provided to multiple destination servers and then redistributed to clients. Possible
destination servers, include QuickTime, Darwin, or another DME. There are a number of
methods for receiving an incoming stream. The most common is to receive an incoming
stream into the Multi Protocol Server and then push the stream to the RTP Server (Out-
10). It is also possible to receive a Push directly into the RTP server (In-3) or to receive an
unannounced unicast or multicast. In this scenario you will need to manually place the
multicast/unicast .sdp file from the source on the destination server.
Another important use case for providing input to the RTP server is from the VC Gateway.
This input does not require explicit configuration. In addition to the output options for
delivering multicast or unicast streams via Push mechanisms, streams are available via the
RTPSP/RTP server without any explicit configuration. When clients open an RTSP stream
to the .sdp file from a server, they will receive a reflected unicast of the incoming stream.
This method can be used to distribute the stream to either client players or to multiple
destination servers.
To Play: iOS Viewing URL
Individual streams that are
not part of a master playlist:
http://<dme_ip_address>/HDS/<stream_name>/
playlist.f4m
All streams in a master
playlist:
http://<dme_ip_address>/HDS/<master_playlist_name>/
playlist.f4m
Note : Each relay must have a unique source. A single source may have
multiple destinations.
Note : If a stream which is present on the RTP server is to be used as source
for any output from the Multi Protocol serer, an RTSP/RTP Pull (In-6)
must configured on the Multi Protocol server. For more about configuring
this scenario, see Out-7 > Relay (Unicast/Multicast).