#Ip fast channel tv#

In this scheme each Set Top Box simultaneously joins additional multicast groups (TV channels) along with the one requested by the user.

#Ip fast channel tv#

I perform an empirical analysis of a particular solution to the channel change delay problem, namely, predictive pre-joining of TV channels. Synchronisation and buffering of video streams can cause channel change delays of several seconds. This is the latency experienced by users when switching between TV channels. In this dissertation I investigate some of the challenges faced by IPTV distribution network operators, and I propose novel techniques to address these challenges.įirst, I address one of the major concerns of IPTV network deployment: channel change delay. It is therefore challenging for an IPTV operator to guarantee the quality of experience expected by its users, and doing so in an efficient manner. IPTV distribution imposes stringent requirements on both performance and reliability. It causes therefore no surprise the rapid roll-out of IPTV services by operators worldwide in the past few years. The distribution of digital TV services over IP networks, or IPTV, offers carriers flexibility and added value in the form of additional services. The advent of IP networks and the increased availability of broadband access created a new vehicle for the distribution of TV services. The distribution of television is currently dominated by three technologies: over-the-air broadcast, cable, and satellite. The development results show that the VA-PRTS has highly practical real-field feasibility. The experiment results show that the proposed VA-PRTS improves the quality of the viewer experience for interactive panoramic video streaming services. Compared to conventional methods, VA-PRTS increases the bitrate saving by over 57% and decreases the interactive delay by over 66%, while maintaining a level of perceptual video quality. For the proposed VA-PRTS, this paper defines a cutoff visual attention metric algorithm to determine the quality of the encoded video slice based on the capability of visual attention and the progressive streaming method based on the priority of RoI video data.

VA-PRTS enables the receiver to speed up the time to display without degrading the perceptual quality. This paper proposes a visualattention-aware progressive region of interest (RoI) trick mode streaming service (VA-PRTS) that prioritizes video data to transmit according to the visual attention and transmits prioritized video data progressively. In the near future, traditional narrow and fixed viewpoint video services will be replaced by high-quality panorama video services.