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Coding transmission method for medium cloud video data

A technology of video data and transmission method, applied in the field of network transmission, can solve the problems of limited network bandwidth, instability, low video encoding and transmission efficiency, and achieve the effect of solving slow transmission and optimizing encoding time.

Inactive Publication Date: 2013-12-04
武汉眸博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited computing power of current video output terminals such as computers and mobile phones, the limited network bandwidth and real-time changes make video encoding and transmission inefficient and unstable

Method used

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  • Coding transmission method for medium cloud video data
  • Coding transmission method for medium cloud video data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1, a method for encoding and transmitting video data in a media cloud, comprising:

[0048] a. At the original video data output terminal, the bandwidth of the transmission network is monitored in real time. According to the monitored current bandwidth delay and bandwidth jitter conditions, combined with the computing power of the original video data output terminal, the original video data adopts H.264 international video Codec standard for lossless compression, and control the encoding complexity in lossless compression, to obtain lossless compressed video data;

[0049] b. The original video data output terminal transmits the lossless compressed video data to the cloud server through the network;

[0050] c. After the cloud server receives the lossless compressed video data, it decodes the lossless compressed video data according to the preset H.264 international video codec standard to obtain the same restored video data as the original video data;

[00...

Embodiment 2

[0054] Embodiment 2. On the basis of Embodiment 1, the method for controlling the coding complexity in lossless compression includes:

[0055] a. Set the quantization parameter QP to 1, then perform lossless compression;

[0056] b. Set the IDR frame length;

[0057] c. Setting the number of reference frames for inter-frame prediction;

[0058] d. Set the range of inter-frame prediction search points;

[0059] e. Set whether to perform bidirectional prediction.

Embodiment 3

[0060] Embodiment 3, on the basis of Embodiment 1, the method for controlling the encoding complexity in lossy compression includes:

[0061] a. Adjust the size of the quantization parameter QP;

[0062] b. Set the number of reference frames between frames;

[0063] c. Set the size of the search range between frames;

[0064] d. Rate-distortion optimization RDO model parameter adjustment;

[0065] e. Whether to use bi-directional prediction;

[0066] f, Profile and Level parameter settings;

[0067] g. Entropy coding and block filter parameter setting.

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Abstract

The invention discloses a coding transmission method for medium cloud video data. The coding transmission method for the medium cloud video data comprises the following steps that real-time monitoring is conducted on the bandwidth of a transmission network on an original video data output terminal, lossless compression is conducted on the original video data according to a monitoring result combined with the computing power of the original video data output terminal, the coding complexity of lossless compression is controlled, lossless compression video data are obtained, and the lossless compression video data are uploaded to a cloud server through the network; the cloud server decodes the lossless compression video data, so that an original video signal is restored, secondary loss compression is conducted, and the coding complexity of the loss compression is controlled; finally, the cloud server stores loss compression video data or distributes the loss compression video data to request users. The coding transmission method for the medium cloud video data equivalently utilizes the computing power of a user side, limited transmission network bandwidth resources and the cloud server to the maximum extent so that the problems that transmission from the user side to a cloud side is slow and the calculation amount is large can be solved.

Description

technical field [0001] The invention relates to the technical field of network transmission, in particular to a method for encoding and transmitting video data in a media cloud. Background technique [0002] With the development of Web2.0, video data on the Internet has shown explosive growth, such as video sharing sites, online video chat, social networks, P2P on-demand, etc., all need to process, store and transmit a large amount of video data. In addition, the fast-growing mobile Internet serves tens of millions of users at the same time, and video data grows exponentially. [0003] Cloud computing provides computing, storage and other services to users through the Internet, and is becoming an emerging technology. Internet users rent software and hardware from cloud computing service providers, and can control sufficient computing resources without configuring local servers. With the rapid development of multimedia cloud computing, there are still some problems to be so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2343H04N21/238H04N21/24H04N7/26H04N7/32
Inventor 蒋明
Owner 武汉眸博科技有限公司
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