Video source switching method and device

A video source and video playback technology, applied in the multimedia field, can solve problems such as heavy system load and poor network performance, and achieve the effects of reducing system load, avoiding switching actions, and improving network performance

Inactive Publication Date: 2015-05-27
LETV INFORMATION TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a method and device for switching video sources, which are used to solve the problems of heavy system burden and poor network performance in the prior art during the switching process of video sources

Method used

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  • Video source switching method and device
  • Video source switching method and device

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Embodiment Construction

[0033] Solve the problem of heavy system burden and poor network performance in the existing technology during the switching process of video sources. The ratio of the bit rate of the currently playing video source determines whether to switch the video source, and when the client determines that the video source needs to be switched, the bit rate is selected according to the bit rate of the locally playable video source to meet the preset conditions, and switch the currently playing video source to a video source whose bit rate meets the preset conditions. Adopting the technical scheme of the present invention, the ratio of the network transmission speed at the current moment to the code rate of the currently playing video source is used as the standard for switching the video source, and the final switch is selected according to the code rate of the video source that can be played by the client. The target video source, so as to ensure smooth video playback, avoid blind vide...

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Abstract

The invention discloses a video source switching method and a video source switching device. The video source switching method comprises the following steps: a client side detects the code rate of a local currently-played video source and the current network transmission speed; the client side acquires the code rates of playable video sources respectively; when the client side determines that the ratio of the current network transmission speed to the code rate of the currently-played video source reaches a preset threshold, the client side switches the currently-played video source to a video source of which the code rate meets a preset condition. Through adoption of the technical scheme, the ratio of the current network transmission speed to the code rate of the currently-played video source is used as a criterion for judging whether to switch the video source, and according to the code rates of the playable video sources at the client side, the final target video source is selected to play, so that a blind video source switching action is avoided on the basis of ensuring smooth video playing, and further the burden on a system is reduced and the network performance is effectively improved.

Description

technical field [0001] The invention relates to the field of multimedia technologies, in particular to a video source switching method and device. Background technique [0002] With the rapid development of multimedia technology, streaming media can be transmitted and played in various ways, among which, a P2P (Peer to Peer; point-to-point) streaming media system is a commonly used streaming media transmission and playback system. [0003] In the existing P2P streaming media system, the streaming media content is cut into multiple data blocks (chunk), and each data block is used as the basic unit of streaming media data transmission, so as to complete the transmission of continuous data streams between nodes (Peer) , where each data block is represented by a unique chunk id. The sharing and exchange of program content all depend on the buffer message (abbreviated as BM) exchanged between nodes to describe the buffer state of the node, that is, the sharing and exchange of pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/442H04N21/438H04N21/462
Inventor 马宙李茗张海李卓
Owner LETV INFORMATION TECH BEIJING
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