Agora Video SDK provides a robust solution for real-time video and audio communication. Integrating it with a React application can enable features like video calling, conferencing, and live streaming. This guide will walk you through implementing Agora Video SDK in a React project, with step-by-step instructions and code examples.
Before starting, ensure you have the following:
Related read: Upgrading Your React Application to Next.js: A Step-by-Step Guide
If you don’t have a React project already, create one:
npx create-react-app agora-video-app cd agora-video-app
Agora provides an npm package for their Web SDK. Install it in your project:
npm install agora-rtc-sdk-ng
Log in to your Agora console, create a project, and note the App ID. This ID will initialize the Agora Video SDK.
Create a .env file in the root of your project and add your App ID:
REACT_APP_AGORA_APP_ID=your-app-id-here
Now, let’s create a VideoCall component to handle the video call logic.
VideoCall.js :
import React, { useEffect, useRef, useState } from 'react';
import { createClient, createMicrophoneAndCameraTracks } from 'agora-rtc-sdk-ng';
const appId = process.env.REACT_APP_AGORA_APP_ID; // App ID from .env
const client = createClient({ mode: "rtc", codec: "vp8" });
const VideoCall = ({ channelName, token }) => {
const [users, setUsers] = useState([]);
const [start, setStart] = useState(false);
const [tracks, setTracks] = useState(null);
const remoteVideoRefs = useRef({});
useEffect(() => {
const init = async () => {
const [localAudioTrack, localVideoTrack] = await createMicrophoneAndCameraTracks();
client.on("user-published", async (user, mediaType) => {
await client.subscribe(user, mediaType);
if (mediaType === "video") {
setUsers((prevUsers) => [...prevUsers, user]);
}
})
client.on("user-unpublished", (user) => {
setUsers((prevUsers) => prevUsers.filter((u) => u.uid !== user.uid));
});
await client.join(appId, channelName, token, null);
await client.publish([localAudioTrack, localVideoTrack]);
setTracks([localAudioTrack, localVideoTrack]);
setStart(true);
};
init();
return () => {
client.leave();
tracks?.forEach((track) => track.close());
};
}, [channelName, token]);
return (
<div>
<div id="local-stream">
{tracks && <video autoPlay playsInline ref={(ref) => ref && tracks[1].play(ref)} />}
</div>
<div id="remote-streams">
{users.map((user) => (
<video key={user.uid}
autoPlay
playsInline
ref={(ref) => {
if (ref) {
user.videoTrack?.play(ref);
}
}}
/>
))}
</div>
</div>
);
};
export default VideoCall;Client Initialization: We create a client with createClient and specify the mode and codec.
Use the VideoCall component in your application.
App.js:
import React from 'react';
import VideoCall from './VideoCall';
function App() {
const channelName = "testChannel";
const token = null; // Replace with a token if your project requires one.
return (
<div className="App">
<h1>Agora Video Call</h1>
<VideoCall channelName={channelName} token={token} />
</div>
);
}
export default App;Run the application: npm start
Open your application in multiple browser tabs or devices to test the functionality provided by the Agora Video SDK.
Add Mute and Leave Controls:
You can add buttons to mute/unmute the microphone or leave the call:
<button onClick={() => tracks[0].setEnabled(false)}>Mute</button>
<button onClick={() => tracks[0].setEnabled(true)}>Unmute</button>
<button onClick={() => client.leave()}>Leave</button>Use CSS to style the video streams and layout.
#local-stream, #remote-streams video {
width: 300px;
height: 200px;
margin: 10px;
border: 1px solid black;
}
You can easily build powerful video communication features with the Agora Video SDK and React. This guide provides a foundational implementation, which you can expand to create a fully-featured video-conferencing application. Whether aiming for basic video calls or complex features, the Agora Video SDK ensures a seamless development experience.
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