A class real-time video projection method and system based on webrtc
A real-time video and video technology, applied in the field of educational information display, can solve the problems of reducing the difficulty of thread deployment and management, not providing "video shooting and synchronous projection to solve the details, etc., to enhance classroom interaction, reduce dependence on the network environment, Eliminate the effect of cumbersome links
Active Publication Date: 2022-04-19
FOCUS EDUCATION TECHNOLOGY CO LTD
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Problems solved by technology
The projection sender and the projection display end transmit image data and audio data through the WebRTC standard in a unified manner, without using the data adapter lines of their respective protocols, and realize the point-to-point projection method, which can reduce the difficulty of thread deployment and management, and realize the image at the same time Simultaneous display of data and audio data provides good user experience; however, this patent is only a real-time projection of mobile screen recording, and does not provide more detailed solutions for "video shooting and simultaneous projection"
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[0056] The present invention will be further described below in conjunction with accompanying drawing and exemplary embodiment:
[0057] Such as figure 1 A schematic flow diagram of a WebRTC-based classroom real-time video projection method is shown, and the specific steps include:
[0058] Step S101: Establish a TCP control command channel between the PC-side application and the mobile terminal (tablet computer, mobile phone and other mobile devices, here pad) applications; establish and maintain the communication between the PC-side application and the Pad-side application based on the TCP protocol TCP communication, specifically:
[0059] Step S101-1: Start the TCP server through the TCP service module applied on the PC side, set the service port number to 55088, and start listening to see if there is a connection request sent by the Pad side;
[0060] Step S101-2: Start the UDP broadcast on the PC side, the UDP service port number is 6667, and the broadcast content is: t...
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The invention discloses a WebRTC-based classroom real-time video projection method and system, which is characterized in that the application program is configured on the PC side and the mobile side respectively by applying the WebRTC standard, and the tablet side application is responsible for turning on the camera and the camera of the tablet computer during projection. The microphone is used to collect video and audio data and data encoding, and based on the point-to-point data transmission channel established by WebRTC, the video and audio are transmitted to the PC as a media stream. The playback of the media stream, on the one hand, performs the saving and local storage of the media stream; at the same time, it supports the remote and real-time control of the video playback on the PC side by the mobile terminal. Real-time video transmission and projection in the local area network can be achieved without the need to build an additional streaming media server, which saves the tedious links of deploying streaming media servers and reduces the complexity of real-time projection system deployment.
Description
technical field [0001] The invention relates to the field of educational information display, in particular to a WebRTC-based classroom real-time video projection method and system. Background technique [0002] In the classroom, teachers use video projection to enhance the interactivity of classroom teaching. Most of the methods used are to save video files locally on laptops, tablets or mobile phones, and connect them to projection display devices through data adapter cables to achieve projection. purpose of display. With the increasing demand for real-time projection in the classroom, people began to study how to send real-time audio and video data collected in the classroom to the PC for display. The patent "a wireless video projection system applied to teaching scenes" (application number: 201810669242.8) A solution is proposed: build an RTMP streaming media server for video reception, playback and storage. However, the data transmission between the player and the serv...
Claims
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IPC IPC(8): H04L9/40H04L65/1066H04L65/60H04L65/611H04L65/65H04L67/06H04L67/104H04L67/1095H04L67/14H04L69/16H04N9/31
CPCH04L65/1066H04L67/025H04L67/06H04L67/104H04L67/1095H04L67/14H04L69/16H04L63/0876H04N9/3179H04L65/75H04L65/611H04L65/65H04L65/70
Inventor 吴小建
Owner FOCUS EDUCATION TECHNOLOGY CO LTD