一种基于SVC编码的移动流媒体点播系统及其性能优化设计与实现

Design and Implement a Mobile Streaming Media System and Optimize the Performance Based on Scalable Video Coding

传统的流媒体系统中节目源一旦确定,终端在接收节目源的过程中采取的是同一套质量标准,这势必会造成由于终端性能、网络带宽等差异而影响流媒体系统服务质量.针对这种情况,提出了将比特平面编码方案整合于Android平台中,实现根据终端客户的不同需求、终端设备的异构性、网络带宽的变动的影响因素,制定优化策略,实时地传输不同码流质量的视频,达到为不同需求的用户提供不同服务质量的业务的目标.实验结果表明,终端设备自动检测所属网络环境,据此进行SVC编码并为用户推荐相应质量的流媒体服务.

The terminal is taken by the same quality standards in the process of receiving program source once it is determined in the traditional streaming media system.This is bound to reduce the service quality of the streaming media system caused by the difference in terminal performance,network bandwidth and others.In view of this,a SVC solution is proposed based on Bit Plane Encoding which is integrated in the Android platform.The optimized strategy is formulated according to the different needs of the end customer,the heterogeneity of the terminal equipment and the change of the network bandwidth to realize the video quality of different stream can be transmitted in real time.Experimental results show that the network environment is automatically detected by the terminal equipment,which is accorded to encode the video so that the corresponding quality of the streaming media service is recommended for users.