Method and system for synchronously broadcasting multi-terminal video based on IP (internet protocol) network
A video synchronization and IP network technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of inability to realize point-to-multipoint data transmission and poor synchronization effect of multi-point synchronous playback, and achieve synchronization effect Good, flexible adjustment, cost-saving effect
Active Publication Date: 2014-12-17
SHENZHEN AIRSMART TECH CO LTD
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[0005] The purpose of the present invention is to provide a method for multi-terminal video synchronous playback based on an IP network, aiming at solving the problems existing in the prior art that point-to-multipoint data transmission and multi-point synchronous playback cannot be realized and the synchronization effect is not good
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[0042] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0043] figure 1 It shows a multi-terminal video synchronous playback system based on an IP network in an embodiment of the present invention. The system has 6 terminal device members, in which terminal 1 is the control point installed with terminal and resource management software, and terminal 2 is the media server, and the terminals 3-6 are playback terminals, and the terminals 1-6 establish communication connections with each other through the WLAN network. Media server terminal 2 can be computer, is used for providing video file, and video file can come from the file of this computer local...
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The invention provides a method and a system for synchronously broadcasting multi-terminal video based on the IP (internet protocol) network. The system comprises a media server, a control point terminal and a plurality of broadcasting terminals, which are connected with one another in the WLAN (wireless local area network) network. The method comprises the following steps: the media server transmits video media stream data to the plurality of broadcasting terminals by the WLAN network; when the plurality of broadcasting terminals decode and broadcast the video media stream data, at least one of the plurality of broadcasting terminals transmits the absolute broadcasting time Tn of each frame of the decoded video media stream data to the media server; and the media server transmits a synchronization time order to the plurality of broadcasting terminals every the synchronization time at intervals, so that the plurality of broadcasting terminals are used for synchronously broadcasting. According to the method, the un-decompressed original video coding stream is transmitted to each broadcasting terminal, so that the un-decompressed original video coding stream can be decoded locally, and synchronously computes by an original PTS (partial transmit sequence); therefore, a coding link can be reduced, the synchronous error can be effectively controlled, the decoding precision is high, and the synchronization effect is good.
Description
technical field [0001] The invention relates to a method and system for multi-terminal video synchronous playback based on an IP network. Background technique [0002] At present, the existing synchronous playback technology adopts WiFi direct (IP-based wireless direct transmission) technology, or adopts RF wireless transceiver (non-IP) technology, generally only supports point-to-point, and cannot realize point-to-multipoint data transmission and multipoint (terminal) play synchronously. [0003] Furthermore, most of the existing technologies use screen copy technology to realize synchronous playback of multiple terminals. Due to the delay of encoding, transmission, and decoding, the playback demonstration error of each terminal cannot be less than 100ms, that is, the human vision can perceive the synchronization error. . [0004] In addition, another common method of video synchronization is to use a distributor to realize synchronous video playback of multiple playback ...
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IPC IPC(8): H04N21/238H04N21/242H04N21/434H04N21/4405
Inventor 曾德钧
Owner SHENZHEN AIRSMART TECH CO LTD