Adequate Bandwidth
Even with packet loss mitigation, video over IP will only work if the network is capable of carrying the content with some reasonable maximum packet loss rate. In practice, this means that video over IP will not work on overloaded networks. Since IP does not of itself offer any traffic guarantees, this must be applied at the network engineering level. One approach to this is the "quantity of service" approach which simply allocates sufficient bandwidth to video-carrying traffic that it will not congest under any possible load pattern. Other approaches include dynamic reduction in frame rate or resolution, network admission control, bandwidth reservation, traffic shaping, and traffic prioritization techniques, which require more complex network engineering, but will work when the simple approach of building a non-blocking network is not possible. See RSVP for one approach to IP network traffic engineering.
The Pro-MPEG Wide Area Network group has done much recent work on creating a draft standard for interoperable professional video over IP.
Read more about this topic: Professional Video Over IP
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