Multi-node low-delay parallel encoding method for 8K ultra-high definition

An encoding method and multi-node technology, applied in the field of multi-node low-latency parallel encoding, can solve the problems of large delay, inability to allocate code rate effectively and reasonably, large encoding delay, etc., so as to achieve low transmission delay, The effect of low latency and balanced encoding time

Active Publication Date: 2020-03-27
HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
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AI Technical Summary

Problems solved by technology

But there are also certain disadvantages, that is, the delay will be relatively large, and the code rate allocation cannot be effectively allocated reasonably
In particular, in order to improve the overall encoding performance, the more nodes, the greater the encoding delay

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  • Multi-node low-delay parallel encoding method for 8K ultra-high definition

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 In the described embodiment, a multi-node low-latency parallel encoding method for 8K ultra-high definition, specifically includes the following steps:

[0025] (1) Deploy master-slave nodes, which are connected by high-speed network cards, one master node and CJ slave nodes, and deploy an overall encoding and transcoding system on the master node, including input signal collection, input audio and video decoding, and input audio and video Preprocessing (such as chroma space conversion, HDR conversion, image quality enhancement, etc.), encoded audio and video multiplexing, IP distribution, etc., and only the encoding core and necessary modules for communicating with the master node are deployed on the slave node.

[0026] (2) Initially, first initialize the number of CTU rows of the coded Slice of the master-slave node,...

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Abstract

The invention discloses a multi-node low-delay parallel coding method for 8K ultra high definition. The method comprises: using master-slave multi-node coding, video coding being based on slice coding, dividing a complete to-be-coded frame into a plurality of slices; respectively distributing different coding nodes for coding, limiting each slice to comprise a plurality of integer CTU rows, the number of the CTU rows being variable, performing dynamic adjustment according to the coding time of each node, transmitting coded code streams back to a main node after each node finishes coding, and the main node splicing code stream data into a complete frame. The method has the beneficial effects that 8K real-time coding in the formats of HEVC, AVS2 and the like is realized, the coding performance can be improved and the coding delay can be reduced by adding the coding server, and the coding time of the master coding node and the slave coding node can be balanced, so that the optimum of thewhole system is achieved, and the minimum delay is achieved.

Description

technical field [0001] The present invention relates to the technical field of video decoding, in particular to a multi-node low-latency parallel encoding method for 8K ultra-high definition. Background technique [0002] HEVC is the latest generation of video coding standard released by the International Telecommunication Union (ITU-T) in 2013. Compared with the previous generation coding standard H264, the compression efficiency of HEVC has doubled, which can greatly reduce the 8K ultra-high-definition video that is currently popularized. bit rate, reducing bandwidth consumption. [0003] AVS2 is the latest generation standard for ultra-high-definition video applications released by China in December 2016. The coding framework of AVS2 is similar to HEVC, and its coding efficiency is slightly better than HEVC. At present, the AVS2 video standard has become the only video coding standard adopted by the State Administration of Radio, Film and Television of China, and has br...

Claims

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Application Information

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IPC IPC(8): H04N21/233H04N21/234H04N21/2343
CPCH04N21/23418H04N21/234309H04N21/2335H04N21/234363
Inventor 谢亚光李日朱建国陈勇
Owner HANGZHOU ARCVIDEO TECHNOLOGY CO LTD
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