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Real-time transcoding method and apparatus, and real-time decoding method and apparatus

A transcoding and decapsulation technology, applied in the field of real-time transcoding of ultra-high-resolution video, which can solve the problems of inability to meet real-time transcoding requirements and difficult macroblock-level parallelization operations.

Inactive Publication Date: 2014-11-19
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, except for motion compensation, most of H.264 processing is difficult to perform effective macroblock-level parallelization operations
[0003] Take horizontal splicing of 4-channel 1080P cameras as an example. In simple terms, the length reaches 4*1920=7680 pixels, and the width is still 1080 pixels. Whether it is the main frequency of the X86 processor or the embedded processor, it cannot meet the needs of real-time transcoding

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Embodiment Construction

[0035] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0036] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0037] First, several concepts involved in the present invention are explained:

[0038] Video splicing technology: It is a technology that stitches several overlapping videos into a large seamless high-resolution video.

[0039] Transcoding: refers to the conversion of audio and video data from one encapsulation format or encoding format to anot...

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Abstract

The invention relates to the field of video monitoring, and discloses a real-time transcoding method and apparatus, and a real-time decoding method and apparatus. In the invention, the real-time transcoding method comprises the following steps: segmenting a complete image into N sub-images, N being an integer greater than or equal to 2; and coding the N sub-images in parallel in real time in multiple processors or multiple processor cores and then packaging them together, position information of each sub-image being included. According to the invention, an ultrahigh-resolution image is segmented into the multiple sub-images and then parallel real-time coding is carried out on the multiple sub-images, such that multiple CPUs or multi-core PCUs can be fully utilized to finish real-time transcoding of the ultrahigh-resolution image.

Description

technical field [0001] The invention relates to the field of video monitoring, in particular to a real-time transcoding technology of ultra-high resolution video in a video splicing system. Background technique [0002] The reason is that the bottleneck of high-resolution video transcoding is that video encoding and decoding cannot effectively use multi-processor or processor multi-core parallel technology, and the efficiency of encoding and decoding depends on the main frequency of the processor. The reason is that the bottleneck of high-resolution video transcoding is that video encoding and decoding cannot effectively use multi-processor or processor multi-core parallel technology, and the efficiency of encoding and decoding depends on the main frequency of the processor. Taking H.264 decoding as an example, the main computation of H.264 decoding is concentrated in five steps including entropy decoding, motion compensation, inverse quantization and inverse transformation,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18
Inventor 郭斌王川艳陈杰
Owner HANGZHOU HIKVISION DIGITAL TECH
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