Video coding and delivery challenges for next generation IPTV

作     者：Appleby, S. Crabtree, B. Jeffery, R. Mulroy, P. Nilsson, M. 

作者机构：BT Video Coding & Streaming Res Team Ipswich Suffolk England 

出 版 物：《BT TECHNOLOGY JOURNAL》 (英国电信技术杂志)

年 卷 期：2006年第24卷第2期

页      面：174-179页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：Internet Protocol Television Video coding Broadcast Industry Obstetric Delivery Internet Protocol networks Throughput 

摘      要：Current generation, large-scale, Internet protocol television (IPTV) systems borrow heavily from the broadcast industry, which makes a number of delivery assumptions that do not apply to IP networks. Consequently we can perceive major improvements if we better match the delivery of IPTV services with the underlying network transport. We can expect next generation IPTV systems to adapt video streams dynamically to maximise throughput, allow constant quality delivery, and degrade gracefully in congested networks. This paper outlines the challenges in optimising IPTV delivery and the contribution that BT s research has made to overcoming some of these.