变码率TS流动态复用算法设计

Study and Application of Variable Bit-rate TS Stream Dynamic Multiplexing Algorithm

为使视频服务器直接播出变码率的TS流节目,提出了一种变码率TS流动态复用算法,根据当前PCR值计算得到码流的实时速率,然后根据此速率对插入到MPTS(多节目传输流)中的TS包数量进行调整,从而实时地调整码率的播出速率。测试结果表明该算法简单有效,所生成复用流的各项指标符合标准。

To enable direct broadcast variable bit-rate TS stream, this paper presents a dynamic multiplexing algorithm of variable bit-rate TS stream. The algorithm calculates real-time rate according to the PCR value and adjusts the number of TS packets inserted into MPTS based on this rate. Thus the broadcast rate of variable bit-rate TS stream is adjusted in real-time. Test results show that the algorithm is simole and effective,the specifications of the MPTS accord with standards.