Transmission stream remultiplexing method

Abstract

The present invention relates to a transport stream re-multiplexing method, which re-multiplexes multi-input single-program transport stream into a multi-program transport stream for outputting. The method includes: first of all, reconfiguring the program specific information PSI and service information SI of the output transport stream according to counted program specific information PSI and service information SI of the input transport stream; secondly, dynamically uniformly and interlacedly outputting the valid data and empty packets of each transport stream according to the rate of the output transport stream; and substituting the empty packets in a certain interval into the program specific information PSI and service information SI. The invention only differentially tunes the original PCR rather than rewriting the PCR value.

Description

technical field [0001] The invention belongs to the field of digital television transmission, and in particular relates to a transmission stream remultiplexing method. Background technique [0002] In the process of digital TV transmission, in order to make full use of spectrum resources, multiple channels of digital TV programs are often transmitted in one analog physical channel. Therefore, multiple single-program transport streams need to be multiplexed into one multi-program transport stream for easy transmission. [0003] At present, there are many devices or methods for multiplexing multiple single-program transport streams into one multi-program transport stream, but they generally have one or more of the following problems: implemented by hardware, poor portability and high cost; The combination of reuse and re-multiplexing cannot be applied to the occasion of re-multiplexing multiple multiplexed single-program transport streams; the re-multiplexing method is compli...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many devices or methods for multiplexing multiple single-program transport streams into one multi-program transport stream, but they generally have one or more of the following problems: implemented by hardware, poor portability and high cost; The combination of reuse and re-multiplexing cannot be applied to the occasion of re-multiplexing multiple multiplexed single-program transport streams; the re-multiplexing method is complicated; only constant bit rate transport streams can be re-multiplexed; Poor performance indicators for multiplexing methods;

It may cause overflow in the decoder buffer at the receiving end

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