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Video data distribution method and system method and system for distributing video data

A technology of video data and transmission method, applied in the field of video data distribution method and system, can solve the problems of blurred bad experience, screen jumping, limited floating range, etc., and achieves the function of adaptive bit rate distribution, high-quality playback, and storage saving. The effect of space and cost

Inactive Publication Date: 2010-08-11
BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

However, if too many data frames are discarded, it will cause jumping and blurred images during video playback.
Therefore, the floating range of bit rate (bandwidth) that this approach can adapt to is limited

Method used

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  • Video data distribution method and system method and system for distributing video data
  • Video data distribution method and system method and system for distributing video data
  • Video data distribution method and system method and system for distributing video data

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Embodiment Construction

[0032] In order to solve the problems or disadvantages existing in the prior art as described in the background technology, the present invention provides a video data transmission method capable of adapting to network bandwidth, which has an adaptive code rate (bandwidth) function, compared to the first method The solution reduces the storage cost, and expands the floating range of the code rate (bandwidth) compared with the second method. The so-called video file actually includes file logo information data, audio codec information data, video codec information data, audio content data and video file data. The video file transmission method provided by the present invention, its basic principle is, based on the possible bandwidth of the network, several kinds of video files corresponding to different bandwidths (code rates) are generated in advance and saved, that is, by moderately changing the definition or resolution of the video, To reduce the amount of video data, adapt ...

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Abstract

The invention discloses a method for distributing video data. At least two video file copies with different code rates are prestored. The method comprises the following steps: receiving a client video access request which carries a network bandwidth parameter or specified video code rate; selecting a video file copy with the proximal network bandwidth parameter or specified video code rate; and when the difference between the code rate of the selected video file copy and the specified video code rate is less than a preset value, transmitting data of the selected video file copy to the client. The invention also provides a corresponding system for distributing video data. According to the invention, under the conditions of different network bandwidths, the contents of the optimum data bulk are automatically selected and distributed according to different bandwidths of users, so that the video can be played smoothly with high quality. The invention only needs to store a plurality of limited video file copies, thereby saving storage space and cost. In addition, on the premise of satisfying requirements of the user, the invention can realize the function of self-adaption code rate distribution.

Description

technical field [0001] The invention relates to the technical field of network communication and multimedia, in particular to a method and system for distributing video data. Background technique [0002] In recent years, with the popularization of the Internet, the improvement of bandwidth, and the maturity of service models, video has gradually become a mainstream application on the Internet. Distributing video data through the Internet has become one of the most popular services on the Internet. The number of video users is huge and growing rapidly. , the market capacity of online video is also growing rapidly. However, the Internet is not a dedicated network for video applications after all, but a comprehensive network that carries many services. On this comprehensive network architecture, various services compete to use basic resources, such as network bandwidth. As a special application, video has special requirements for network bandwidth: if the network bandwidth i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/173H04L29/06
Inventor 郑清芳章动鲍东山
Owner BEIJING NUFRONT MOBILE MULTIMEDIA TECH
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