Transport stream multiplexer conforms to the DVB standard with the ability to multiplex and re-multiplex the incoming real-time transport stream, combining the dynamic bit rate control function of GMT + AVS encoder to fully improve the utilization efficiency of frequency band resources and improve the image quality. Realize the data exchange with the encoder to complete the closed-loop dynamic statistical multiplexing: Through real-time analysis of multiple program content, realize the dynamic allocation of the code rate of the different contents of the program, thereby improving the coding efficiency, saving the use of bandwidth .