Improving the Adaptivities of Over-The-Top Television System

Over The Top technology (OTT) – thanks to the adaptive streaming, i.e. automatically adjusting the video stream’s quality – quickly takes over the role of its precedent IPTV and becomes the indispensable service for any provider of streaming video over the Internet. However in deployment, there are still several white spaces to improve the technology. In this paper we propose 3 techniques toward that goal. Firstly, taking into account the limited resource of the encoders, we propose a temporal and spatial determination of the pre-generated bitstreams based on the statistical analysis of network traffic. The number of streams remains unchanged but they fit better to the real condition of the transmission network. Secondly, addressing the booming number of available digital TV programs, we provide an adaptively customized catalogue of the TV programs. The broadcasted programs are organized by their contents’ natures. Viewers’ historical interaction with TV is incorporated to further fine-tuning the program lists proposed to viewers themselves. Finally, facing to the extreme situation when the OTT servers can still reach to the saturated state, we propose to switch adaptively between serve-client and peer-to-peer topologies to retrieve the requested TV program in an efficient way. These three adaptivity-methods are combined together in a full chain of OTT distribution system to be evaluated on their overall performance. The impact is expected to be pertinent.