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Video coding method and apparatus

A video coding and sub-video technology, applied in the field of video coding methods and devices, capable of solving problems such as poor video image quality

Active Publication Date: 2015-08-19
DATANG MOBILE COMM EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing method of segmenting and mixing video images, after encoding the segmented video images, in the process of data transmission, if the encoded video image data of a certain segment is lost, it means The quality of the video images of multiple conference scenes related to the conference scene contained in this segment has deteriorated

Method used

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  • Video coding method and apparatus
  • Video coding method and apparatus

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Experimental program
Comparison scheme
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Embodiment 1

[0018] refer to figure 2 , shows a flow chart of steps of a video encoding method according to an embodiment of the present invention.

[0019] The video coding method of the present embodiment includes the following steps:

[0020] Step S102: Obtain the pixel information of the split-screen area corresponding to each terminal in the mixed video image and the arrangement information of the split-screen area.

[0021] Wherein, the pixel information of the split-screen area includes: the pixel value of the width of the split-screen area and the pixel value of the height of the split-screen area; For example, the mixed video image contains four split-screen areas, the first split-screen area is on the left side of the second split-screen area, the third split-screen area is below the first split-screen area, and the fourth split-screen area is The screen area is below the second split screen area and on the right side of the third split screen area.

[0022] It should be note...

Embodiment 2

[0030] refer to image 3 , shows a flow chart of steps of a video encoding method according to Embodiment 2 of the present invention.

[0031] The video encoding method of this embodiment specifically includes the following steps:

[0032] Step S202: The video encoder obtains the pixel information of the split-screen area corresponding to each terminal in the mixed video image and the arrangement information of the split-screen area.

[0033] The video encoder in this embodiment may be an H.264 video encoder, or any other applicable type of video encoder.

[0034] Both the basic grade and the extended grade of the H.264 video encoder support the FMO (Flexible Macroblock Ordering, flexible macroblock ordering) video image division method. This video image division method uses the macroblock allocation mapping technology to allocate the macroblocks in the video image. into different slice groups, the video encoder can independently decode the video images in each slice group. ...

Embodiment 3

[0057] refer to Figure 4 , shows a flow chart of steps of a video encoding method according to Embodiment 3 of the present invention.

[0058] In this embodiment, the pixel information of the split-screen area corresponding to each terminal in the obtained mixed video image and the arrangement information of the split-screen area are used to generate a sequence parameter set, and the mixed video image is divided according to the sequence parameter set. The sub-video images corresponding to each split-screen area are divided into the same image slice group as an example to describe the video encoding method in this embodiment.

[0059] The video coding method of the present embodiment includes the following steps:

[0060] Step S302: The video encoder obtains the pixel information of the split-screen area corresponding to each terminal in the mixed video image and the arrangement information of the split-screen area.

[0061] Step S304: The video encoder generates a sequence...

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Abstract

The invention provides a video coding method and apparatus. The method comprises: obtaining pixel information and arrangement information of split screen zones corresponding to all terminal in a mixed video image; dividing a sub video image, corresponding to each split screen zone, of the mixed video image into a same image slice group; carrying out coding on sub video images of all image slice groups to generate coded video image data and sending the coded video image data to all terminals. According to the provided video coding scheme, even though the video image data corresponding to a certain slice group during transmission of the coded video imaged data are lost, only the video image data of one split screen zone corresponding to the slice group are lost; and thus only the quality of the video image of the split screen zone is influenced and the image qualities of other split screen zones are not influenced.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to a video encoding method and device. Background technique [0002] In a multi-point video conferencing system, a video mixer will be set up, and the set video mixer is used to mix the video images received from each terminal into a frame of video images, and then encode the mixed frame of video images sent back to each terminal. The conference scene corresponding to each terminal can be displayed on the mixed frame of video image, and the user can simultaneously see the conference site scene corresponding to each terminal participating in the multipoint video conference. At present, the more commonly used encoding method is H.264 video encoding, which is a high-performance video encoding technology. Correspondingly, the more commonly used video mixer is the H.264 video encoder. [0003] At present, in a multi-point video conference, after the H.264 video encoder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/177H04N7/15
CPCH04N7/15
Inventor 樊国栋罗飞
Owner DATANG MOBILE COMM EQUIP CO LTD
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