高清视频会议中音视频媒体资源方案的设计

Design of Audio and Video Media Resource Programs in HD Videoconferencing

视频会议电视终端中决定视频处理能力的核心技术是硬件设备媒体资源系统。研究针对高清视频会议终端的需求,提出基于DM6467和FPGA的视频会议媒体资源系统设计方案。方案结合视频会议音、视频的输入输出接口以及编解码能力,通过对系统架构、设计思路、组件要求以及组件之间相互协作的详细描述,分析系统的硬件架构、媒体资源管理系统,方案重点设计媒体资源管理系统的软件架构。实验结果表明,该方案可以实现高性能、高可靠性的视频会议终端。

The core technology that determines the video processing capability in video conference TV terminal is the hardware device media resource system.The study puts forward the design scheme of video conference media resource system based on DM6467 and FPGA for the needs of HD video conference terminal.The scheme takes the audio and video input and output interfaces as well as the coding and decoding capabilities in video conference into consideration,and analyses the hardware architecture of the system,media resource management system through the detailed description of the system architecture,design ideas,component requirements,and inter-collaboration between the components.The focus of the scheme is on the design of the software architecture of the media resource management system.The experimental results showed videoconferencing terminal based on this scheme is very effective and reliable.