Network Stream Selector


The NSS (Network Stream Selector) system provides real-time video streaming from multiple RF reception points to a central
location. The system is perfect for organizations that require reliable and high-quality video transmission from remote
The NSS system consists of a professional PC in a rack and a UPS, also in a rack, providing a compact and robust solution for
video streaming in any format and resolution. The RF receivers have the capability to send the Transport-Stream over IP, and
the NSS system analyzes the different real-time videos to select the best one at any given moment in time. This selection is
based on the analysis of video quality, frame rate, number of cuts, and video stability. The best video is then sent through UDP
or RTP to the designated destination IP:PORT, which can be either unicast or multicast.
With the NSS system, users can select the input ports from which the computer will receive the TS videos, and specify the
destination IP:PORT to send the best video. The system’s web server provides a user-friendly interface, allowing for easy
configuration and management.
With its compact design and robust components, the NSS system is designed to provide reliable and high-quality video
streaming for years to come.


The Network Stream Selector (NSS) is a Linux-based solution designed for use in Dell EMC PowerEdge R250 rack computers and a SAI. The system is equipped with two RJ45 inputs, capable of supporting up to 1GBps. The NSS is equipped with a SAI that provides a safe shutdown in the event of a power failure, and the SAI and computer communicate through an RS232 connection.

The system supports up to 18 video inputs and is compatible with both UDP and RTP protocols. The NSS analyzes all incoming videos using advanced criteria, such as framerate, number of cuts, number of corrupt packets, video stability over time, and quality, to determine the best video at any given time. The best video is then transmitted to the user-defined IP address via the web server, ensuring a completely transparent data transfer. The NSS supports all video codecs and formats supported by other SVP devices, including H265, H264, MPEG-2, and all video formats. In addition to video, the NSS also transmits audio and any other data within the Transport-Stream frame.

Videos to be analyzed should be sent to the IP address of the Dell computer, and the ports can be selected through the web server. Any changes made in the web server are saved in memory, so the device will automatically start functioning without the need to specify the ports and recipient address again. Both the ports and recipient address can be modified at any time through the web server.

If you configure both RJ45 ports to be on the same LAN (i.e., they are both connected to the same network switch or router), then the traffic will be load-balanced between the two ports. This means that the network will send data through both ports simultaneously, which can improve network performance and reduce network congestion.

If you configure the two RJ45 ports to be on different LANs, then each port will be assigned a different IP address and network configuration. In this case, the traffic that is destined for one LAN will be sent through the port that is connected to that LAN, and the traffic that is destined for the other LAN will be sent through the other port. This configuration can be useful if you need to connect your computer to two separate networks, such as a local network and a VPN network.