In today’s world of moving video over IP vs. Satellite transmission, there are many new products out there in the marketplace to do just this task. One real problem is that not everyone guarantees the delivery of every packet and even if the packets successfully arrive, there is no guarantee that the packets arrive correctly in order or in a timely fashion for purposes of delivering content. Quality of Service enabled IP networks can achieve a loss-free transmission. However, there are many other factors that can cause failure of one type or another, such as; network delay queuing in routers and or switches. You may experience packet loss and reordering of packets due to link failures that can result in temporary interruption of Service and, or re-routing of packets. In short, there are a number of technical and operational issues to address when using IP networks as a transport delivery stream. The FEC or Forward Error Correction is a way of protecting a data stream across a network where packet loss and delay exist. In the case of the PATH 1 Model Vx8000, an IP video gateway transports real-time digital video over both public and private IP networks. The product has a robust Forward Error Protection methodology by using the Pro-MPEG COP-3 standards-based, and a user-selectable FEC: Pro-MPEG or ClearPath Pro for extra protection. Prior to transmission, the data is put through an algorithm that adds extra packets for error correction at the far end it acts as a shield that protects the video signal from the inherent issues of an IP network, such as packet loss, delay and jitter.
This is a very good paper named “Measuring Packet Reordering”
By John Bellardo and Stefan Savage - Department of Computer Science and Engineering University of California at San Diego http://www-cse.ucsd.edu/~savage/papers/IMW02.pdf
Path 1's Vx8000 2.0 enables you to deliver real-time, MPEG-2, MPEG-4, and VC-1 (MPEG-2 TS) video in both Standard and High Definition formats via public and private IP networks. When you consider you can process up to8 DVB/ASI Streams in a 1RU chassis, this is an extraordinary product. This is also a techno-economical product by comparison. This is not the only product that can deliver content over the internet however, presently appears to be best bang for the buck.
I am looking forward to your input about this technology or similar technologies that are in this market Segment.
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4 comments:
Thanks for posting the primer. I found it beneficial.
Does anyone know the price of Path 1 Vx8000 gateway?
I am considering Video gateways to broadcast TV programs from Indian subcontinent to USA households.
Will this be the ideal gateway? I will be using Public internet. How many channels can it transport at one time? And most important - What is the price?
Yes, please send me your contact info and I will have someone contact you. Send email to: kgarguilo@becstore.com . thank you
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