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KVM video coding quantization parameter range control method

A technology for quantizing parameters and control methods, applied in the field of digital video coding, which can solve problems affecting user experience, slow video convergence speed, and inability to respond well to details of scene changes, so as to achieve faster convergence speed, stable output code stream, and guaranteed The effect of system delay

Active Publication Date: 2017-05-10
杭州比特瑞旺电脑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this patent, the video convergence speed during the switching process is relatively slow, and when the video screen changes slightly, it cannot reflect the details of the scene changes well, which affects the user experience.

Method used

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  • KVM video coding quantization parameter range control method
  • KVM video coding quantization parameter range control method
  • KVM video coding quantization parameter range control method

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Embodiment Construction

[0037] The present invention is described in detail below in conjunction with embodiment, and this example realizes the encoding of KVM video optimally by controlling the quantization parameter range of H.264 hardware acceleration encoder on Texas Instruments DM385 chip, but the present invention is not limited thereto.

[0038] A KVM video encoding quantization parameter range control method, comprising the following steps:

[0039] (1) Input a frame of KVM video image, and the target code rate BitRate and target frame rate FrameRate of video encoding;

[0040] (2) The encoding and quantization parameter mode QpMode of the current frame is set;

[0041] (3) Calculate the encoding quantization parameter range according to the encoding quantization parameter mode of the current frame;

[0042] (4) Carry out H.264 or H.265 coding to the video image of current frame according to the coding quantization parameter scope of current frame, and obtain the coding bit number FrameBits ...

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Abstract

The invention relates to a KVM video coding quantization parameter range control method comprising the following steps: inputting a frame of KVM video image and the target bit rate and target frame rate of video coding; setting the coding quantization parameter mode QpMode of the current frame; calculating the coding quantization parameter range of the current frame according to the coding quantization parameter mode of the current frame; performing H.264 and H.265 coding on the current frame of video image according to the coding quantization parameter range, and getting the number of frame bits of the current frame; and repeating the steps to code a next frame of video image. The system delay is ensured in a basically static scene. The video stream of a KVM scene is clearer at image details. Smooth stream output is ensured during scene switching. The quality convergence of video images is accelerated. A typical value range of each parameter is given so users can perform adjustment and optimization flexibly according to such factors as coder type, video resolution and system delay.

Description

technical field [0001] The invention relates to the field of digital video coding, in particular to a method for controlling the quantization parameter range of KVM video coding. Background technique [0002] Keyboard (Keyboard), monitor (Video) and mouse (Mouse) remote switching management system, that is, digital KVM system, also known as multi-computer controller, can control multiple remote computers at the same time through a set of I / O devices. An emerging computer remote centralized management technology based on IP network. With the rapid development of social information industry technology, computers and networks are distributed in every corner of our city, and the servers of large multinational companies are all over the world. Running back and forth between time, and only need to use a single I / O device to remotely access and centrally manage up to thousands of computers. The digital KVM system not only reduces energy consumption and saves space in the computer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/103H04N19/124H04N19/146H04N19/184H04N19/154
CPCH04N19/103H04N19/124H04N19/146H04N19/154H04N19/184
Inventor 朱威郑阳杨洋洪伟聪李伟超吴斌
Owner 杭州比特瑞旺电脑有限公司
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