Configuring Audio, Video Input and Output devices
In this guide we’ll show you how to configure audio and video input and output devices in your Twilio Video Rooms application.
Selecting a Specific Video Input
You can use navigator.mediaDevices.enumerateDevices() to select a specific video input like this:
const { connect, createLocalTracks } = require('twilio-video');
navigator.mediaDevices.enumerateDevices().then(devices => {
const videoInput = devices.find(device => device.kind === 'videoinput');
return createLocalTracks({ audio: true, video: { deviceId: videoInput.deviceId } });
}).then(localTracks => {
return connect('my-token', { name: 'my-room-name', tracks: localTracks });
}).then(room => {
console.log('Connected to room ' + room.name);
});
Audio inputs can also be selected in a similar fashion.
Selecting a Specific Audio Input
Selecting a specific audio input is the same as selecting a specific video input. Just select the audio input device ID and set it on the constraints:
const { connect, createLocalTracks } = require('twilio-video');
navigator.mediaDevices.enumerateDevices().then(devices => {
const audioInput = devices.find(device => device.kind === 'audioinput');
return createLocalTracks({ audio: { deviceId: audioInput.deviceId }, video: true });
}).then(localTracks => {
return connect('my-token', { name: 'my-room-name', tracks: localTracks });
}).then(room => {
console.log('Connected to room ' + room.name);
});
Selecting a Specific Audio Output
You can use navigator.mediaDevices.enumerateDevices() along with HTMLMediaElement.setSinkId() to set the audio output device like this:
const { connect } = require('twilio-video');
let audioOutputDevice;
navigator.mediaDevices.enumerateDevices().then(devices => {
audioOutputDevice = devices.find(device => device.kind === 'audiooutput');
return connect('$TOKEN', { name: 'my-room-name' });
}).then(room => {
room.on('trackSubscribed', track => {
if (track.kind === 'audio') {
const audioElement = track.attach();
audioElement.setSinkId(audioOutputDevice.deviceId).then(() => {
document.body.appendChild(audioElement);
});
}
});
});
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