VBrick dme Admin Manual page 74

Field
Unannounced UDP
To configure a unicast/multicast output:

Objective: This use case describes how an existing RTP stream can be relayed as a unicast or
multicast output from the DME. This allows the rebroadcast of stream acquired through use
case In-8 < Unicast/Multicast RTP or In-3 < RTP Auto Unicast or (most commonly)
through an RTP Auto Unicast (Out-10) from the Multi Protocol server. For a step-by-step
procedure that explains how to configure a multicast relay in greater detail, see the Play a
DME Stream topic.
Announced UDP
Unannounced UDP
1. The SDP file generated for input use case In-8 < Unicast/Multicast RTP will need to be
copied, renamed, and modified when relayed to another destination. Leave the original
SDP file in place. For the remaining cases, the sdp file will be automatically generated
2. Create a new Relay in System Configuration > RTP Relay Settings by clicking on new
relay.
3. Enter a relay name identifying this relay.
4. In Source Settings enter the IP address
If the input is In-8, enter the original SDP filename for mount point. In other cases,
select the Target Name of the "Push RTP via RTSP". Note that the mount point must always
have a ".sdp" file extension. For In-3 or Out-10, use the stream name. If using Announced
UDP, go to Step 7.
5. Enter the multicast or unicast address or hostname to send the stream to in
. Since this is not an auto-unicast relay to another DME (Step 7) or a server that
Settings
supports auto-unicast, select
the first stream listed in the SDP file. Subsequent streams use an incremental even
number value. If this is a multicast, and needs to adhere to multicast time-to-live
restrictions, enter the value in the Multicast TTL field.
62
Description
Check this box when the stream will not be announced via Auto
Unicast. The stream will be sent to the specified IP address and port
number. The most feature is most commonly used for multicast stream
distribution. In this use case, the most common means for a player to
access this stream is by fetching the sdp file via HTTP. For unicast the
only method for playback requires the inconvenient step of placing an.sdp
file on the destination server so it is not recommended.
• Base Port – the port to which the stream is sent. It can be an
arbitrary port. It must however be an even number and, in the case of
unicast, be a unique port number on the destination server. The Base
Port will be used to send either audio or video depending on the
order of streams in the .sdp file. The first stream uses the Base Port
number; the next stream uses Base Port number + 2.
• Multicast TTL – Used to specify the number of routers the
multicast stream will pass through before it stops propagating over
the network. Range = 1–255. Set this for the topology of the
network you are working on.
– follow Steps 1–4, and 7.
– follow Steps 1–6.
Unannounced UDP
, Select Request incoming stream.
127.0.0.1
and enter the first port number used by
Destination
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