思科D9036在高清业务应用中编码延时的分析与研究

Analysis and Research on the Coding Delay of Cisco D9036 in HD Service Application

首先介绍数字电视业务未来的发展趋势,特别研究了天津广电前端高清业务视音频编码的技术难点。针对其平台D9036存在的编码延时问题提出了解决方案,搭建了一套完整的实验测试平台,结合实际情况,对系统各个环节进行了全面测试,包括手动切换、优化编码器的配置选项等方法,并做好详细记录。最终得出结论,可通过将视频编码配置的延时选项调整到恰当的模式,以达到确保画面质量与其所对应的必要延时之间的平衡。

Firstly,this paper introduces the future development trend of digital TV service,especially the technical difficulties of high definition video and audio coding in Tianjin Radio and TV front-end. Aiming at the problem of encoding delay in D9036,a complete experimental test platform is built. According tothe actual situation,all aspects of the system are tested comprehensively,including manual switching,optimizing the configuration options of the encoder and so on. Finally,it is concluded that the delay options of video coding configuration can be adjusted to the appropriate mode to ensure the balance between the picture quality and the necessary delay time.