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The Internet Protocol television (IPTV), new revenue-generating services, brings the end user a much more entertainment experience at an affordable cost. The IPTV brings not only the traditional voice and data services but also the new features such as video on demand (VoD), broadcast TV, customized ad insertion, and so on. However, the realization of the IPTV business requires much wider bandwidth,...
The reliable video transmission is very challenging. Efficient coding and transmission control techniques are required to meet the needs of QoS (quality of service). RTP, a real time transmission protocol, can provide the services of video transmission control. H.264, the latest coding and compression standard from ITU-T, is currently dominating the field by offering a flexible architecture and compression...
The availability of inexpensive CMOS cameras and microphones that can ubiquitously capture multimedia content from the environment is fostering the development of Wireless Multimedia Sensor Networks (WMSNs), i.e., distributed systems of wirelessly networked devices that can retrieve video and audio streams, still images, and scalar sensor data. WMSNs require the sensor network paradigm to be re-thought...
At present, video delivery over the wired or wireless packet-switched networks has been motivating a series of researches into video encoding, quality of service (QoS), multimedia communication, and service models of networks. However, most of researchers lack a suitable video delivery simulation platform closer to the real video delivery system. Different from other existing simulation mechanisms,...
Fountain codes were introduced as an efficient and universal forward error correction (FEC) solution for data multicast over lossy packet networks. They have recently been proposed for large scale multimedia content delivery in practical multimedia distribution systems. However, standard fountain codes, such as LT or Raptor codes, are not designed to meet unequal error protection (UEP) requirements...
Video multicast over multirate wireless networks imposes great challenges in designing efficient rate adaptation schemes due to the multi-layer hierarchical video coding and heterogeneous fading across multicast receivers. We propose a cross-layer framework for rate selection in video multicast, where different video layers have diverse loss-rate QoS requirements and thus may employ different transmission...
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