中文摘要：

本文面向影响用户体验质量最重要的因素之一的视频质量，一方面，为了满足用户日益增长的视听娱乐需求，研究高清IPTV的图像质量处于什么水平，能否满足用户对视频质量的要求；另一方面，为了提高企业的核心竞争力，研究运营商在目前的视频质量情况下如何持续演进提升。在对现网IPTV高清频道与数字电视频道进行了一个全貌的评测之后，给出了进一步提升IPTV高清频道视频质虽的建议，并在现网环境下验证丁建议的可行性和有效性。

英文摘要：

This paper focused on the video quality, one of the most important factors of user quality of experience. On the one hand, it researched on the level of video quality of HD IPTV to meet the growing customer demand in the audiovisual entertainment, and on the other hand, worked on the strategy for China Telecom to promote the video quality and therefore to enhance the core competitiveness of China Telecom. After a panoramic measurement of the existing IPTV HD channels and cable digital TV HD channels, the recommendations to further improve the video quality of IPTV HD channels was proposed, and the feasibility and effectiveness of the proposals in the current network environment was verified.