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Statistical multiplexing coding method of digital television

A statistical multiplexing and digital TV technology, applied in the field of video statistical coding, can solve problems such as complex algorithm implementation, and achieve the effects of simple operation, low cost, and easy implementation.

Active Publication Date: 2016-09-21
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the algorithm implementation is very complex

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  • Statistical multiplexing coding method of digital television

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Embodiment Construction

[0020] The present invention is described in further detail below in conjunction with accompanying drawing:

[0021] refer to figure 1 , the statistical multiplexing coding method of digital television of the present invention comprises the following steps:

[0022] 1) Encoding each pre-encoded transmission video in the multi-channel pre-encoded transmission video into code streams of various encoding quality levels with the same GOP structure;

[0023] 2) caching code streams of various encoding quality levels encoded in step 1);

[0024] 3) According to the total transmission video bandwidth, select a code stream with an appropriate coding quality level among the code streams corresponding to each pre-encoded transmission video;

[0025] 4) sending the code stream of the appropriate encoding quality level corresponding to each pre-encoding transmission video selected in step 3);

[0026] 5) Steps 1), 2), 3) and 4) are repeated until all video transmissions are completed, ...

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Abstract

The invention discloses a statistical multiplexing coding method of a digital television. The statistical multiplexing coding method comprises the following steps of: 1) coding each pre-coding sending video in a plurality of paths of pre-coding sending videos with an identical GOP structure to form code streams of a plurality of coding quality levels; 2) caching the code streams of the plurality of coding quality levels coded in the step 1); 3) according to a total sending video bandwidth, selecting the code streams of the suitable coding quality level in the code streams corresponding to the plurality of paths of pre-coding sending videos; 4) sending out the code streams of the suitable coding quality level corresponding to the plurality of paths of pre-coding sending videos; and 5) repeating the steps 1), 2), 3) and 4) until all the videos are sent out, and completing the statistical multiplexing coding of the digital television. According to the invention, the statistical multiplexing coding of the digital television is realized, and the operation is relatively simple.

Description

technical field [0001] The invention belongs to the field of video statistical coding and relates to a statistical multiplexing coding method for digital television. Background technique [0002] In digital TV statistical multiplexing coding, most current methods are to encode each coded video into a code stream, and control the code rate of each coded stream through calculation and analysis. But the algorithm implementation is very complicated. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a statistical multiplexing coding method for digital TV, which can realize statistical multiplexing coding for digital TV, and is relatively simple to operate. [0004] In order to achieve the above object, the statistical multiplexing coding method of digital television of the present invention comprises the following steps: [0005] 1) Encoding each pre-encoded transmission video ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2365H04N21/4385H04N21/462
CPCH04N21/2365H04N21/4385H04N21/4621
Inventor 曹俊沈雪峰樊炜符均陈伟
Owner XI AN JIAOTONG UNIV