MPEG-2传输中复用及解复用器的一种设计方案

在介绍MPEG-2传输流的格式及传输过程中的复用和解复用问题的基础上,提出了一种MPEG-2传输信号流的复用及解复用的设计方案.复用时,插标记位,不删空包,简化了复用器设计,节约了复用器资源;解复用时,再删空包并提取PCR计算码率,恢复原始码流.最后给出了利用FPGA实现该方案的具体方法和工作流程,该复用、解复用方案简洁清楚,十分利于实际工程实现.

A Design of Multiplexer and Demultiplexer in MPEG-2 Transport

Based on the introduction of the syntax of MPEG-2 TS (Transport Stream) and some problems of multiplex and demultiplex, we bring forward the design scheme of MPEG-2 TS special multiplexer and demultiplexer. In our design, we adopt the method of inserting marker but not deleting stuff packages to simplify the design of multiplexer as well as save the resource of it. While in demultiplexer, the stuff packages are deleted and the PCR is picked up to calculate symbol rate so as to recover the original TS. In this paper, we also describe the working flow and implementation of this design by FPGA. The design is so clear and concise that it can be well realized in practical project.