Method for statistics of multiplex transmission stream

Abstract

A statistical method for the multiple transport flow includes initialization, statistics of input information and multiple transport streams etc. The invention provides a simple and efficient method completely without encoder, which is used for the multi-channel statistics of basic document flow of video and audio.

Description

technical field [0001] The invention relates to a method for statistically multiplexing transmission streams. Background technique [0002] Digital audio and video codec standards that have been maturely applied now, such as MPEG-2, and a number of representative international standards that have emerged in recent years, such as MPEG-4, H.264 / MPEG-4 AVC (a standard established by ITU-T The international standard for video compression coding jointly formulated with ISO / IEC MPEG), the standard AVS independently formulated by my country, etc., some of these standards are called the system part, this part mainly discusses how to combine single or multi-channel basic audio and video Streams and other data are combined into single and multiplexed streams suitable for storage and transmission. A transport stream is a data stream defined in part of the system, which combines one or more programs with one or more different clock bases into a single stream, and its rate can be constant...

AI Technical Summary

Problems solved by technology

[0004] At present, there are statistical multiplexers developed and produced by some well-known companies on the market. Most of these multiplexers are implemented by hardware, and in the process of statistical multiplexing, there is a process of communication with the encoder, that is, within a period of time, Check the number of bits of the code stream of the input multi-channel program. If it exceeds a certain range, the encoder is required to re-encode the program during this period until it meets the requirements. This implementation method is suitable for the situation where encoding and multiplexing are realized at the same time , for that kind of video code stream already exists, when it is required to multiplex these video elementary streams into a transport stream with a constant transmission rate, this kind of multiplexer cannot complete the statistical multiplexing well, because when the code stream does not meet the requirements case, it has no way to communicate with the encoder to ask the encoder to re-encode

Most of the current statistical multiplexing methods for transport streams are not separated from the encoder, and they are not for the statistical multiplexing of multi-channel video elementary stream files that have already been compiled.

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