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Screen projection live broadcast method and system based on UDP (User Datagram Protocol) and multicast

A multicast and screencasting technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problem of low concurrency at the streaming end, achieve the effect of reducing stuttering, reducing packet loss, and improving concurrency

Pending Publication Date: 2022-01-04
武汉美和易思数字科技有限公司
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Problems solved by technology

[0005] In view of this, the present invention proposes a method and system based on UDP and multicast for screencasting live streaming, which is used to solve the technical problem of low concurrency at the streaming end in screencasting live broadcasting

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  • Screen projection live broadcast method and system based on UDP (User Datagram Protocol) and multicast
  • Screen projection live broadcast method and system based on UDP (User Datagram Protocol) and multicast

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Embodiment Construction

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0048] see figure 1 , the present invention proposes a screencasting live broadcast method based on UDP and multicast, said method comprising:

[0049] S1. The multicast address is dynamically generated by the multicast server, and the multicast address is dynamically assigned according to the number of accesses of the receiving end;

[0050] Firstly, the multicast address is dynamically generated, allocated and managed dynamically. The sending s...

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Abstract

The invention discloses a screen projection live broadcast method and system based on UDP and multicast. The method comprises the following steps: dynamically generating multicast addresses through a multicast server, and dynamically allocating the multicast addresses according to the access number of receiving ends; the anchor end performing UDP fragmentation on to-be-sent data and sending the to-be-sent data to the multicast server; and the receiving end monitoring and receiving the data based on the allocated multicast address. According to the invention, a UDP + multicast mode is adopted in screen projection live broadcast, so that the concurrency of a flow pushing end is improved, and a receiving end can realize duplication and sharing of data in multicast only by monitoring a specified multicast IP (Internet Protocol); and the stream pushing end only needs to send data to the specified single multicast IP, so that the method can be suitable for the condition that the number of receiving ends accessed in the multicast is increased, and the lagging is reduced.

Description

technical field [0001] The invention belongs to the technical field of screen projection and playback, and in particular relates to a screen projection live broadcast method and system based on UDP and multicast. Background technique [0002] In the live broadcast of conference screencasting, a single anchor device not only needs to collect audio and video data, but also has the ability to push streams in real time for multiple participating devices, so that the memory and concurrent push capabilities will be very fast stuck in a bottleneck. During the testing process of streaming using TCP, it was found that under the premise of ensuring a certain clarity and quality, when the connection setting exceeds 20 devices, obvious lagging phenomenon begins to appear. [0003] Caton occurs because the streaming end is implemented based on the application extension method. Using this extension method requires that the memory usage during the streaming process should not exceed 50 me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/436H04N21/4363
CPCH04N21/43615H04N21/4363
Inventor 海克洪陈少成
Owner 武汉美和易思数字科技有限公司
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