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A multi-node low-latency parallel encoding method for 8K UHD

A coding method and multi-node technology, which is applied in the field of multi-node low-latency parallel coding, can solve problems such as large coding delay, code rate allocation cannot be effectively allocated reasonably, and large delay, so as to reduce coding delay, The effect of low latency and improved encoding performance

Active Publication Date: 2022-01-11
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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  • A multi-node low-latency parallel encoding method for 8K UHD

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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 encoding method for 8K ultra-high definition. It adopts master-slave multi-node encoding, video encoding is based on slice encoding, divides a complete frame to be encoded into several slices, assigns different encoding nodes for encoding, and limits each slice to contain a certain number of integer CTU lines, the number of lines Variable, dynamically adjusted according to the encoding time of each node. After each node is encoded, the encoded code stream is sent back to the master node, and the master node is splicing the code stream data into a complete frame. The beneficial effects of the present invention are: Realize 8K real-time encoding in formats such as HEVC and AVS2, increase the encoding performance and reduce the encoding delay by adding an encoding server, and can balance the encoding time of the master-slave encoding nodes to achieve the optimization of the overall system, And with the lowest latency.

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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Patent Type & Authority Patents(China)
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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