Cloud director multi-camera inter-frame synchronization method and system

A frame synchronization and multi-camera technology, applied in the field of cloud computing processing, can solve problems such as out-of-sync audio and video, lower live broadcast quality, and inability to synchronize

Pending Publication Date: 2021-02-09
广州赞赏信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cloud directors in the industry have a pain point that has not been well resolved: when pulling streams and directors between different ca

Method used

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  • Cloud director multi-camera inter-frame synchronization method and system
  • Cloud director multi-camera inter-frame synchronization method and system
  • Cloud director multi-camera inter-frame synchronization method and system

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Experimental program
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Embodiment 1

[0041] A method for synchronizing frames between multiple cameras in cloud broadcasting, the method comprising:

[0042] S1. Synchronization of NTP alignment and timestamp at the streaming end: when the streaming end is initialized, time synchronization is performed with the NTP server (NetworkTime Protocol); after time synchronization, the difference between the local time and the NTP time is obtained, which is recorded as the clock difference ; During collection, the collection time stamp is the local time plus the clock difference, and the time stamp is corresponding to the NTP time as a unified reference time for synchronization;

[0043] S2. Frame synchronization between cloud directors and broadcasters: When the cloud director is directing, a frame synchronization sequence is performed according to the timestamp of the streaming end; when all the audio and video frames participating in the synchronization are synchronized according to the timestamp, they are handed over t...

Embodiment 2

[0064] For this purpose, see figure 2 : The present embodiment also provides a frame synchronization system among multiple cameras of cloud broadcasting, including an NTP server, at least one terminal, and cloud broadcasting; each terminal is connected to the NTP server for time correction when pushing streams, so The cloud guide includes at least one camera position, frame synchronization, Render and output, each terminal corresponds to a camera position, and the camera positions are divided into machine positions with frame synchronization marks and machine positions without synchronization marks, so The camera position with the frame synchronization flag is connected to the Render through frame synchronization, the camera position without the synchronization flag is directly connected to the Render, and the Render is connected to the output.

[0065] It should be noted, figure 2 The dotted line box on the left of the center represents different terminals, and they must f...

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Abstract

The invention provides a cloud director multi-machine inter-position frame synchronization method, which comprises the following steps of: when a stream pushing end is initialized, carrying out time synchronization on the stream pushing end and an NTP server; after time synchronization, obtaining a difference value between the local time and NTP time, and recording the difference value as a clockdifference value; in view that during collection, the collection timestamp is the sum of the local time and the clock difference value, enabling the timestamp to correspond to NTP time to serve as unified reference time of synchronization; when the cloud director directs, performing frame synchronization sorting according to the timestamp of the stream pushing end; and when all the audio and videoframes participating in synchronization are synchronized according to the timestamp, rendering the audio and video frames by a renderer. The invention also provides a cloud director multi-machine inter-position frame synchronization system. Through time synchronization and frame synchronization mechanisms, inter-camera audio and video synchronization during cloud director processing is realized.Even if a network fluctuates, the error between cameras can be reduced to be within one frame. Frame synchronization can be realized between any cameras.

Description

technical field [0001] The present invention relates to the technical field of cloud computing processing, in particular to a frame synchronization method and system among multiple cameras of cloud broadcasting. Background technique [0002] With more and more cloud services, cloud broadcasting is becoming more and more popular. Compared with local broadcasting, it has the advantages of high-performance processing capability and sufficient and stable remote streaming bandwidth. However, cloud directors in the industry all have a pain point that has not been well resolved: when pulling streams and directors between different cameras, they cannot be synchronized. The result is that the audio and video may be out of sync, which greatly reduces the quality of the live broadcast. [0003] Based on this, there is an urgent need for a frame synchronization method and system among multiple camera positions of cloud broadcasting that can realize frame synchronization between any cam...

Claims

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Application Information

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IPC IPC(8): H04N21/2187H04N21/43H04N21/8547H04J3/06
CPCH04N21/2187H04N21/4307H04N21/8547H04J3/0667
Inventor 周鹏鹏
Owner 广州赞赏信息科技有限公司
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