Method, device and system of data transmission

A video data transmission and data technology, applied in the field of data transmission, can solve the problems of unguaranteed QoE, insufficient consideration of QoE, affecting users' viewing of video data, etc., so as to reduce the amount of data and avoid wireless network congestion.

Inactive Publication Date: 2014-11-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, when video data is compressed and transcoded, the main purpose is to reduce the transmission data volume of video data, which does not fully consider the user's QoE (Quality of Experience, user experience). When video data is over-compressed , After transcoding, it will seriously affect the user's viewing of video data, resulting in the user's QoE not being guaranteed

Method used

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  • Method, device and system of data transmission
  • Method, device and system of data transmission
  • Method, device and system of data transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the embodiment of the present invention provides a method for video data transmission, the method comprising:

[0044] S101: Acquiring video data;

[0045] Optionally, the video data may be obtained directly; or obtained by decoding the encoded video data, that is, obtaining the second encoded video data, and decoding the second encoded video data to obtain the video data.

[0046] Wherein, the second encoded video data is encoded video data obtained by encoding original video data.

[0047] S102: Determine a first encoding parameter according to a preset video quality evaluation parameter threshold and the video data;

[0048] Optionally, by acquiring temporary first encoding parameters; encoding the video data according to the temporary first encoding parameters to obtain temporarily reconstructed video data; acquiring the temporary reconstructed video data and the video data Video quality evaluation parameter value; determine whether th...

Embodiment 2

[0059] Such as figure 2 As shown, the embodiment of the present invention provides a method for video data transmission, including the following steps:

[0060] S201: Obtain second encoded video data;

[0061] Wherein, the second encoded video data is obtained after encoding the video data to be obtained;

[0062] S202: Decode the second coded video data to obtain video data;

[0063] S203: Obtain a temporary first encoding parameter;

[0064] Optionally, the first encoding parameter may be a preset temporary first encoding parameter; or obtain the second encoding parameter of the second encoded video data as the temporary first encoding parameter. The second encoding parameter is a parameter used when encoding the video data to generate the second encoded video data.

[0065] Optionally, the first coding parameter and the second coding parameter are quantization parameters, and the temporary first coding parameter is a temporary quantization parameter QP (Quantization Pa...

Embodiment 3

[0075] Such as image 3 As shown, the embodiment of the present invention provides a video data transmission method, including steps S301-S306, wherein, S301-S302 is the same as S201-S202; S305-S306 is the same as S207-S208, the specific steps refer to Embodiment 2, No more details here, different from embodiment 2, this embodiment also includes the following steps:

[0076] S303: Query the corresponding relationship between the threshold value of the video quality evaluation parameter and the encoding parameter stored locally, and obtain the encoding parameter corresponding to the preset threshold value of the video quality evaluation parameter;

[0077] S304: Use the corresponding encoding parameter as a first encoding parameter.

[0078] Optionally, the corresponding relationship between the threshold value of the video quality evaluation parameter and the coding parameter may be as shown in Table 1, which agrees that the threshold value of the video quality evaluation par...

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Abstract

Disclosed in the present invention are a data transmission method, apparatus and system, which belongs to the communication technical field. Said method comprises the following steps: obtaining video data; determining first coding parameters according to a preset threshold value of video quality evaluation parameter and said video data; coding said video data according to said first coding parameters and obtaining a first coding video data; sending said first coding video data to the user terminal. Embodiment of the invention determines the first coding parameters according to the preset threshold value of the video quality evaluation parameter and said video data, thus the quality of experience (QoE) of the user is ensured; furthermore, by coding said video data with the selected first coding parameters to obtain the first coding video data, the data volume of the video data is reduced, and the wireless network congestion caused by large amounts of video data is avoided.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method, device and system. Background technique [0002] Video business has become the business with the largest Internet traffic, and it will be a business form that will occupy a dominant position in Internet applications in the future. However, due to the huge amount of data generated by video services, while providing rich information, it also occupies a large amount of network bandwidth during network transmission, and the network bandwidth is limited. Therefore, a large amount of video data will cause wireless network congestion. . [0003] In the prior art, video data can be compressed and transcoded to reduce the amount of transmitted data, reduce the transmission delay of video data, and avoid network congestion. [0004] The inventor finds that the prior art has the following defects in the process of realizing the present invention:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04N19/164H04N19/124H04N19/146H04N19/154
CPCH04N19/002H04N19/0009H04N19/154H04N19/124
Inventor 彭程晖张伟李波杰张锦芳
Owner HUAWEI TECH CO LTD
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