What is HD Video Distribution over LAN?
HD Video Distribution over LAN is a scalable HD video distribution solution enabling the design of multi display systems.
Simply put, HD Video Distribution allows HD video distribution over standard Ethernet LAN Network. Its the convergence of Audio Video distribution with standard IT technologies.
In essence, there are 3 core components in the system: 1) video to IP .Coder ( transmitter). 2)IP to Video . Decoder ( receiver) and of course the LAN cables and Ethernet Switch to connect CODECs.
What are the link distances of HD Video over LAN?
We can deliver 1080P HD video over 300ft over a cat5e. In general, the limit is based on limits of Ethernet, which is 300ft.
Why use HD Video Distribution over LAN?
Video over LAN /IP uses the same packetized network protocols as the internet and on the physical layer it uses standard Ethernet connections. Most of the deployment sites will be in hospitality, house of worship, education, retail and health care market requiring multiple video displays over longer distances. In these markets, there is already an IT manager on site. By using technologies familiar to the IT group, the installation and maintenance of HD Video Distribution will be 2nd nature. I also would like to add that many sites will be adding or upgrading to HD displays and have pre-run CAT5e cables which now can be utilized to now distribute HD video.
Are there any drawbacks disadvantages ?
Great question. In engineering parlance we say: " you can't get something for nothing." In order to deliver HD Video over IP/LAN, obviously the data size has to be limited. In HD Video LAN/IP , video compression such as MJPEG is used to minimize bandwidth while maximizing video quality. Native HD Video will ALWAYS be better than compressed MJPEG rendition. HD VIdeo over IP/LAN will typically be used in application where easy of use, reliability, distance and scalability is more desired and clients are willing to trade- off some video quality to achieve this. WIth that said, MJPEG is an advanced compression technique and video quality is still very very good.
So is HD Video over LAN/IP for everyone?
NO. We believe in understanding our clients application and needs first. It depends on the application. For example, if the client application is for a 4 display system at the church to host the service or if its a 50 display system for digital signage in a shopping center, then HD over LAN will fit the application. On the other hand, if the application is for a HOME theater, where the client will want the highest quality video available, we would provide solutions that distributes the video in native quality which by the way ,we have solutions for as well.
What are some of the most common applications for the technology that you are seeing at present?
House of Worship where there is a need to distribute video of the sermon or presentation to multiple monitors for the main congregation and the overflow rooms where the distance are typically 100-300ft.
Also in business where there is a need to distribute multiple messages/presentations to the HD displays on site.
Are there some applications that you think would be effective but as yet are not being deployed?
Certainly education will continue to be major user of Audio Video to enhance the learning process and getting messages out to students in an efficient manner. So I think the potential in education as well as health care AV has huge potential.
How does the cost of this technology compare with other methods of distribution?
The system is scalable which is a major advantage in terms of cost. Systems can be initially deployed to meet the current of HD Displays needed. If more displays are needed, simply add a DECODER( Receiver) unit next to the display.
Also, the physical layer of the HD Video Over LAN/IP is Ethernet so cost of adding/installing cables is minimal.
Looking forward, do you see other technologies on the horizon that will further advance the use of the LAN for HD Video distribution?
Certainly businesses are utilizing HD displays to get the message to the clients so digital signage will continue to be a driver for the HD Video over LAN.
Jeffrey Su is product manager at Octava. Graduate of Georgia Institute of Technology in Electrical Engineering