How to do video chat in uniapp

In recent years, video chat has become a new way for people to communicate, and with the development of smartphones and the Internet, the usage rate of video chat is also increasing. For developers, how to implement the video chat function in APP has also become a problem that needs to be solved. This article will implement a simple video chat function through the uniapp framework for your reference.

1. Prerequisites:

1. Familiar with the uniapp framework

2. Install webrtc

3. Understand the concept of real-time communication

2. Implementation ideas

1. The first thing to understand is that webrtc is based on real-time communication technology. When conducting video chat, real-time audio and video data need to be exchanged through implementation connections, so we need to first Encapsulate webrtc to realize real-time transmission of audio and video.

2. On the mobile side, what we need to deal with is to display the audio and video data through the canvas component provided by uniapp, and at the same time through the native plug-ins provided by uniapp (such as uni-mp-weixin ) to realize the call of infrastructure such as cameras and speakers, as well as the recording and stopping of audio and video.

3. During the real-time transmission of audio and video, we need to transmit after the two parties establish a connection. A connection can be established through Socket.io or other real-time communication technologies to transmit audio and video data to the other end.

3. Specific implementation steps

1. Create a uniapp project, then import webRtc, and create separate directories for audio, video and real-time communication to encapsulate the audio, video and communication modules respectively.

2. To create an audio and video processing module, we need to encapsulate all aspects of audio and video acquisition, encoding, and transmission.

3. Use the Canvas component to display audio and video images, control audio recording through mediaRecorder, and realize audio and video playback by calling audio variables and video variables.

4. In the communication part, establish a connection through Socket.io or other real-time communication technology, and transmit audio and video data to the other end.

5. Finally, create a page to call the above audio and video module and communication module.

4. Problems encountered

1. WebRtc does not support local testing, so the code must be uploaded to the server before testing.

2. When two mobile devices are connected using a wireless network, delays may occur, which will also affect the transmission of audio and video.

3. WebRtc compatibility issues. Different browsers and devices support different WebRtc versions, which need to be implemented based on the compatibility of different devices.

5. Summary

This article implements a simple video chat function through the uniapp framework, which is a good reference for developers who want to develop mobile video chat. In the process of implementing video chat, we need to consider many factors, such as audio and video processing, communication establishment, page display, etc. Only comprehensive consideration can make our video chat function more stable and smooth.

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