With the increase in network speeds for both wired and wireless networks, video streaming has become a reality. But different networks are characterized by different network speeds and latency. Also different kinds of devices are used with different networks. These devices range from Desktop/Laptop computers with very high resolution and very high processing power to Mobile Phones with small displays, low processing power and limited battery life. A single common non-scalable video feed for all these different profiles of networks and devices is impractical as streaming a high quality feed may not be possible over GPRS type of networks and streaming a low quality feed may not be visually acceptable to a user with high network bandwidth and high resolution display. To overcome this problem multiple video feeds are used, each catering to a different profile of users. Content creation process becomes complex as multiple files have to be created usually using a different codec and file format. Deployment involves replication of hardware and software infrastructure and associated overhead of maintenance, hence increased cost.
KeywordsMotion Vector Scalable Video Code Enhancement Layer Scalable Video Residue Prediction
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