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Video replacing method, video playing system and device

A video and video content technology, applied in the field of radio and television broadcast control, can solve the problems of poor accuracy, low precision of replacement time control, inability to automatically detect and replace video content, etc., and achieve high control precision, simple and effective control

Inactive Publication Date: 2009-09-16
PEKING UNIV FOUNDER GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a video replacement method, video playback system and device, which are used to solve the problems in the prior art that the video content cannot be automatically detected and replaced, and the control precision of the replacement time is low and the accuracy is poor

Method used

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  • Video replacing method, video playing system and device
  • Video replacing method, video playing system and device
  • Video replacing method, video playing system and device

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Embodiment Construction

[0028] Because in the current radio and television system (video playback system), video playback generally uses mono (audio channel) for playback, and video broadcast signals can contain multiple audio channels (multi-channel), generally including 4 audio channels , at this time, other audio channels are in an idle state and have not been well utilized. The embodiment of the present invention utilizes idle audio channels to realize video replacement playback: the central server sets the trigger according to the synthesized play list Event, insert a characteristic signal in an idle audio channel, and control the local server in a different place to play the replacement video at the corresponding time through the inserted characteristic signal; the local server detects the idle channel, and when the inserted characteristic signal is detected, obtain the replacement video The content data is played within the time range corresponding to the characteristic signal.

[0029] In the...

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Abstract

The invention discloses a video replacing method, a video playing system and a device thereof, which are applied to radio and television playing process. The method comprises that: a central server detects a synthetic playing program list; when a trigger event which is set to start video replacing is detected, a characteristic signal is inserted on an idle audio channel of a video broadcasting signal to be transmitted according to the trigger event so as to acquire a synthetic video broadcasting signal; a local server receives the synthetic video broadcasting signal transmitted by the central server to detect the idle audio channel; and when the characteristic signal is detected, a time slice capable of playing a replaced video can be determined according to the characteristic signal, and content data of the acquired replaced video is played in the time slice. Through accurately controlling a trigger point by the trigger event, automatic replacing of video of different places can be realized, and the method has high control accuracy, and is timely and precise.

Description

technical field [0001] The invention relates to the technical field of radio and television broadcasting control, in particular to a replacement method for remote video playback, a video playback system and a device. Background technique [0002] The broadcasting of radio and television programs is generally broadcast by the TV station’s transmission tower to send video broadcast signals to various places for playback. If various places want to change the broadcast content and replace a certain segment of video content as needed, it can only be inserted into the program manually. The way to replace the video content of a certain period of time. [0003] With the rapid development of radio and television technology and the diversification of radio and television needs, in the field of radio and television broadcast control, the demand for remote replacement of radio program content is becoming stronger and stronger. At present, relying on manual observation of program conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/222H04N5/93
Inventor 张鲁平曾亮刘刚李进安郭宗明
Owner PEKING UNIV FOUNDER GRP CO LTD
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