Design and implementation of transport stream remultiplexer with cascade architecture

This paper presents the design and implementation of MPEG-2 transport stream (TS) remultiplexer with cascade architecture. The remultiplexer monitors the input transport stream packets, and uses the packetized local program data to replace the null packet in the input stream. In this way the local program data can be multiplexed into the transport stream. Compared with traditional TS remultiplexer, our design does not need the PCR correction procedure, and the synchronization of programs in the input TS can be preserved. A crucial issue of how to preserve the correct synchronization for the TS is discussed. Finally, the design is implemented and some experimental results are given.