Technology Trend and its Impact on Video on Demand Service over Internet
Sanjoy Paul · 2010
This chapter claims that the technology trend of higher bandwidth (5×) and better compression (2×) is providing a 10× improvement in cost-performance, and is also enabling the download of a video over the Internet in a time almost comparable to the time needed to procure a video from a store. The challenges for smooth delivery of video over the Internet are packet loss and jitter. Open networks that do not have access to the transport network solve the problem of packet loss by slowing down the sender, based on the loss statistics obtained from the receiver(s), and address the jitter problem by using a relatively large playout buffer at the receiver. Closed networks, on the other hand, are able to eliminate packet loss by admitting only as much traffic as can be handled by the network. They deal with jitter by scheduling at the routing elements inside the network. Controlled Vocabulary Terms jitter; packet loss; video on demand