Utilize bandwidth estimation and scalable video coding to improve IPTV performance

• Main Authors: Chien-tai Lee, 李建泰
• Other Authors: Jiann-Jone Chen
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/19772935081286056642

碩士 === 國立臺灣科技大學 === 電機工程系 === 100 === With the advance of multimedia technologies and Internet prevalence, multimedia has become one of major information communication tools. To provide network multimedia services, both Internet Protocal TV (IPTV) and Peer-to-Peer (P2P) network control are the most important technologies. The Internet multimedia has evolved from voice communications to high definition (HD) video communications. The Open IPTV Forum, OIPF, is aiming to propose the IPTV system standard, which proclaims the potential of IPTV-related technologies. In this thesis, we proposed to adjust and refine the IPTV system, which comprises media codec systems, streaming control and H.264 encoder and rate control units, to satisfy the application requirement of Internet multimedia. The Content Delivery Network (CDN) and P2P networks are integrated to provide the P2P-IPTV service. For live video streaming, we proposed to utilize both scalable video rate control (SVRC) and network traffic monitor (NTM) for better services, in which the latter helps to provide feedback control that takes peer bandwidth capacity, network connection information, and delay parameters, to dynamically adjust the bit-rate of the video encoder. The bandwith estimation method is developed to solve the bottleneck of insufficient bandwidth in a sharing network environment. To improve the reliability of video transmission quality, the SVRC module and NTM method are designed to operate under the best bandwith utilization of IPTV system. Compared to previous researches, our experiments show that the proposed bandwith estimation as a feedback control for IPTV control can effectively reduce the transmission delay, and improve the stability of transmitted video quality.