Udp multicast – Teradek Cube Reference Guide User Manual
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Version 2
Dec „11 © Teradek, LLC 2011. All rights reserved.
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3.4. Using RTP Push: After applying your configuration, a link to the SDP file will be displayed
towards the bottom of the Stream Settings page. To open the stream, either copy the URL and
open it using your video player software, or right click the
and save the file. The saved file
can be opened directly, or added to your streaming server‟s content directory.
4. UDP multicast
4.1.
4.2. UDP multicast allows Cube to send multicast streams over RTP/RTSP. Compared to unicast
streaming, where each client connection requires Cube to send additional data, multicast
streaming relies on compatible networking equipment to intelligently duplicate the video streams.
The multicast license can be purchased through Teradek‟s online store,
The license is available individually, and is also included with the MPEG Transport Stream
license.
4.3. Configuration: To Configure Cube for multicast, Select RTP for the stream type on the Video
Setup -
> Stream Settings page. Below that, select „Enabled‟ for Multicast. Enter a destination IP
address if desired, or leave at the default value (239.192.20.1). Set the TTL value equal to or
greater than the number of network segments the video is to traverse, or leave at 1 for local
network streaming. Set the Video and Audio ports, if desired, or leave at their default values.
Lastly, be sure to select the network interface you are using to stream over in the „Network
Streaming Interface‟ field. Click „Apply.‟
4.4. IMPORTANT: Notes regarding multicast use: After applying your settings, your video stream can
be opened in the same manner as a standard RTP stream. The multicast IP address does not
need to be entered to open the video stream. For example, if a Cube has the IP address
192.168.1.100 and is set to multicast using 239.192.20.1, you would use the URL
rtsp://192.168.1.100/stream1 to open the video stream.
4.5. Additional considerations: Many capable network switches do not have multicast enabled by
default. An improperly configured switch will cause the multicast stream to look like a broadcast,