https://github.com/muaz-khan/MultiStreamsMixer

MultiStreamsMixer is a JavaScript library that allows you pass multiple streams (e.g. screen+camera or multiple-cameras) and get single stream.
https://github.com/muaz-khan/MultiStreamsMixer

audio mediastream mixer multiple multiple-audios multiple-cameras screen video webrtc

Last synced: about 2 months ago
JSON representation

MultiStreamsMixer is a JavaScript library that allows you pass multiple streams (e.g. screen+camera or multiple-cameras) and get single stream.

• Host: GitHub
• URL: https://github.com/muaz-khan/MultiStreamsMixer
• Owner: muaz-khan
• License: mit
• Created: 2017-08-04T03:39:41.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2022-06-16T03:35:01.000Z (over 2 years ago)
• Last Synced: 2024-07-26T20:57:51.310Z (about 2 months ago)
• Topics: audio, mediastream, mixer, multiple, multiple-audios, multiple-cameras, screen, video, webrtc
• Language: JavaScript
• Homepage: https://www.webrtc-experiment.com/MultiStreamsMixer/
• Size: 85 KB
• Stars: 430
• Watchers: 13
• Forks: 109
• Open Issues: 24
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-webrtc - MultiStreamsMixer - JavaScript library that allows you pass multiple streams (e.g. screen+camera or multiple-cameras) and get single stream. (JavaScript)

README

        
# [MultiStreamsMixer.js](https://github.com/muaz-khan/MultiStreamsMixer) | [LIVE DEMO](https://www.webrtc-experiment.com/MultiStreamsMixer/)

* Mix Multiple Cameras or Videos

* Mix Multiple Microphones or Audios (Mp3/Wav/Ogg)

* Mix Multiple Screens or Screen+Video

* Mix Canvas 2D Animation + Camera + Screen

* and **GET SINGLE STREAM!!**

[![npm](https://img.shields.io/npm/v/multistreamsmixer.svg)](https://npmjs.org/package/multistreamsmixer) [![downloads](https://img.shields.io/npm/dm/multistreamsmixer.svg)](https://npmjs.org/package/multistreamsmixer) [![Build Status: Linux](https://travis-ci.org/muaz-khan/MultiStreamsMixer.png?branch=master)](https://travis-ci.org/muaz-khan/MultiStreamsMixer)

# All Demos

1. **Main Demo:** https://www.webrtc-experiment.com/MultiStreamsMixer/

2. [Record Multiple Cameras](https://www.webrtc-experiment.com/RecordRTC/simple-demos/multi-cameras-recording.html)

3. [Record Camera+Screen](https://www.webrtc-experiment.com/RecordRTC/simple-demos/video-plus-screen-recording.html)

> Pass multiple streams (e.g. screen+camera or multiple-cameras) and get single stream. 

# Link the library

```html

```

Or link specific build:

* https://github.com/muaz-khan/MultiStreamsMixer/releases

Or install using NPM:

```sh

npm install multistreamsmixer

```

And import/require:

```javascript

const MultiStreamsMixer = require('multistreamsmixer');

import MultiStreamsMixer from 'multistreamsmixer';

```

# How to mix audios?

```javascript

const audioMixer = new MultiStreamsMixer([microphone1, microphone2]);

// record using MediaRecorder API

const recorder = new MediaRecorder(audioMixer.getMixedStream());

// or share using WebRTC

rtcPeerConnection.addStream(audioMixer.getMixedStream());

```

# How to mix screen+camera?

```javascript

screenStream.fullcanvas = true;

screenStream.width = screen.width; // or 3840

screenStream.height = screen.height; // or 2160 

cameraStream.width = parseInt((20 / 100) * screenStream.width);

cameraStream.height = parseInt((20 / 100) * screenStream.height);

cameraStream.top = screenStream.height - cameraStream.height;

cameraStream.left = screenStream.width - cameraStream.width;

const mixer = new MultiStreamsMixer([screenStream, cameraStream]);

rtcPeerConnection.addStream(mixer.getMixedStream());

mixer.frameInterval = 1;

mixer.startDrawingFrames();

btnStopStreams.onclick = function() {

    mixer.releaseStreams();

};

btnAppendNewStreams.onclick = function() {

    mixer.appendStreams([anotherStream]);

};

btnStopScreenSharing.onclick = function() {

    // replace all old streams with this one

    // it will replace only video tracks

    mixer.resetVideoStreams([cameraStreamOnly]);

};

```

# How to mix multiple cameras?

```javascript

const mixer = new MultiStreamsMixer([camera1, camera2]);

rtcPeerConnection.addStream(mixer.getMixedStream());

mixer.frameInterval = 1;

mixer.startDrawingFrames();

```

# API

1. `getMixedStream`: (function) returns mixed MediaStream object

2. `frameInterval`: (property) allows you set frame interval

3. `startDrawingFrames`: (function) start mixing video streams

4. `resetVideoStreams`: (function) replace all existing video streams with new ones

5. `releaseStreams`: (function) stop mixing streams

6. `appendStreams`: (function) append extra/new streams (anytime)

# TypeScript / Angular

```javascript

import { MultiStreamsMixer } from 'yourPath/MultiStreamsMixer';

let mixer = new MultiStreamsMixer([stream1,stream2]);

mixer.appendStreams(stream3);

let mixed = mixer.getMixedStream();

```

P.S: pollyfills are removed (except for `AudioContext`) use adapter instead.

# Access `` or `` using `querySelector`

```javascript

var canvas = document.querySelector('canvas.multi-streams-mixer');

var videos = document.querySelectorAll('video.multi-streams-mixer');

canvas.style.opacity = .1;

```

# API

```javascript

// default elementClass is "multi-streams-mixer"

var instance = new MultiStreamsMixer(arrayOfMediaStreams, elementClass);

MultiStreamsMixer.prototype = {

	// get readonly MediaStream

	getMixedStream: function() {},

	// add more streams

	appendStreams: function(arrayOfMediaStreams) {},

	// replace with set of your own streams

	resetVideoStreams: function(arrayOfMediaStreams) {},

	// clear all the data

	clearRecordedData: function() {}

};

````

## License

[MultiStreamsMixer.js](https://github.com/muaz-khan/MultiStreamsMixer) is released under [MIT licence](https://github.com/muaz-khan/MultiStreamsMixer/blob/master/LICENSE) . Copyright (c) [Muaz Khan](https://MuazKhan.com).