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Video coding method and video coder

A video encoder and video encoding technology, applied in the field of video encoding methods and video encoders, can solve problems such as video block effect, narrow channel bandwidth, and poor video encoding quality, and achieve the effect of avoiding block effect and improving quality

Active Publication Date: 2013-01-16
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the narrow channel bandwidth and poor channel stability in the Internet and mobile communication networks, the use of existing video coding methods will cause serious block effects in the video, and the quality of video coding is poor.

Method used

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  • Video coding method and video coder
  • Video coding method and video coder
  • Video coding method and video coder

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] figure 1 It is a flow chart of the video encoding method according to Embodiment 1 of the present invention. Such as figure 1 As shown, the method includes the following processes.

[0026] Step 101: Determine whether the current frame fits into the current channel bandwidth.

[0027] If yes, it is determined that the current frame is n...

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Abstract

The invention provides a video coding method and a video coder. The video coding method comprises the following steps: judging whether a current frame is adapted to a current channel bandwidth; if so, judging that the current frame is not an inter domain routing protocol (IDR) frame; otherwise, judging that the current frame is an IDR frame; when the current frame is the IDR frame, selecting an optimal resolution ratio from a sampling resolution ratio and an original resolution ratio of the current frame; when the current frame is not the IDR frame, coding the current frame at the resolution ratio of a former frame. By adopting the video coding method and the video coder provided by the invention, the best resolution ratio can be selected timely according to the current channel status; the block effect caused by adopting a fixed resolution rate under a narrow band condition is avoided, and the video coding quality is improved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular, to a video encoding method and a video encoder. Background technique [0002] At present, the application of video services in the Internet and mobile communication fields is developing rapidly. The video service needs to encode the source video file first, and transmit the encoded video file to the user terminal through the channel of the Internet or mobile communication network. [0003] The existing video coding method adopts a mode of fixed resolution and adjustable quantization step size. During the coding process, the preset resolution is always used for coding, and the quantization step size can be adjusted. This encoding method can guarantee high-quality video transmission when the channel is stable and the bandwidth is sufficient. However, due to the narrow channel bandwidth and poor channel stability in the Internet and mobile communication network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/132H04N19/164
Inventor 唐慧明唐一枝虞露左旭光冯蔚腾
Owner ZHEJIANG UNIV
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