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<!--
> Muaz Khan - github.com/muaz-khan
> MIT License - www.webrtc-experiment.com/licence
> Documentation - www.RTCMultiConnection.org
-->
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<title>WebRTC Many-to-One Broadcast using RTCMultiConnection | Muaz Khan</title>
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<style>
audio,
video {
-moz-transition: all 1s ease;
-ms-transition: all 1s ease;
-o-transition: all 1s ease;
-webkit-transition: all 1s ease;
transition: all 1s ease;
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width: 35%;
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input {
border: 1px solid #d9d9d9;
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.setup {
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document.createElement('article');
document.createElement('footer');
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<!-- scripts used for broadcasting -->
<script src="https://cdn.webrtc-experiment.com/socket.io.js"></script>
<script src="https://webrtc.github.io/adapter/adapter-latest.js"></script>
<script src="https://cdn.webrtc-experiment.com/CodecsHandler.js"></script>
<script src="https://cdn.webrtc-experiment.com/IceServersHandler.js"></script>
<script src="https://cdn.webrtc-experiment.com/RTCMultiConnection.js"></script>
</head>
<body>
<article>
<header style="text-align: center;">
<h1>
<a href="https://www.webrtc-experiment.com/">WebRTC</a> Many-to-One Broadcast using
<a href="https://github.com/muaz-khan/RTCMultiConnection" target="_blank">RTCMultiConnection</a>
</h1>
<p>
<a href="https://www.webrtc-experiment.com/">HOME</a>
<span> &copy; </span>
<a href="http://www.MuazKhan.com/" target="_blank">Muaz Khan</a> .
<a href="http://twitter.com/WebRTCWeb" target="_blank" title="Twitter profile for WebRTC Experiments">@WebRTCWeb</a> .
<a href="https://github.com/muaz-khan?tab=repositories" target="_blank" title="Github Profile">Github</a> .
<a href="https://github.com/muaz-khan/WebRTC-Experiment/issues?state=open" target="_blank">Latest issues</a> .
<a href="https://github.com/muaz-khan/WebRTC-Experiment/commits/master" target="_blank">What's New?</a>
</p>
</header>
<blockquote style="background: #f3b7b7;border: 5px solid black;border-radius: 5px; padding: 10px;">
This demo is <span style="border: 1px dotted red; background: yellow; padding: 2px 5px;">out-dated i.e. deprecated (written in 2013)</span>.
<br><br>
Please try other demos: <a href="https://github.com/muaz-khan/RTCMultiConnection">https://github.com/muaz-khan/RTCMultiConnection</a>
</blockquote>
<blockquote class="inline">
1) Room moderator can receive videos from all participants.<br>
2) Room moderator himself can't share any video; so participants can't see him.<br>
3) Participants can't see each other because it is many-to-one broadcast.
</blockquote>
<div class="github-stargazers"></div>
<!-- just copy this <section> and next script -->
<section class="experiment">
<section>
<span>
Private ??
<a href="" target="_blank" title="Open this link in new tab. Then your room will be private!">
<code>
<strong id="unique-token">#123456789</strong>
</code>
</a>
</span>
<input type="text" id="broadcast-name">
<button id="setup-new-broadcast" class="setup">Setup New Room</button>
</section>
<!-- list of all available broadcasting rooms -->
<table style="width: 100%;" id="rooms-list"></table>
<!-- local/remote videos container -->
<div id="videos-container"></div>
</section>
<script>
// Muaz Khan - https://github.com/muaz-khan
// MIT License - https://www.webrtc-experiment.com/licence/
// Documentation - https://github.com/muaz-khan/RTCMultiConnection
var connection = new RTCMultiConnection();
// https://github.com/muaz-khan/WebRTC-Experiment/tree/master/socketio-over-nodejs
var SIGNALING_SERVER = 'https://socketio-over-nodejs2.herokuapp.com:443/';
connection.openSignalingChannel = function(config) {
var channel = config.channel || connection.channel || 'default-namespace';
var sender = Math.round(Math.random() * 9999999999) + 9999999999;
io.connect(SIGNALING_SERVER).emit('new-channel', {
channel: channel,
sender: sender
});
var socket = io.connect(SIGNALING_SERVER + channel);
socket.channel = channel;
socket.on('connect', function() {
if (config.callback) config.callback(socket);
});
socket.send = function(message) {
socket.emit('message', {
sender: sender,
data: message
});
};
socket.on('message', config.onmessage);
};
connection.session = {
audio: true,
video: true,
broadcast: true
};
connection.onstream = function(e) {
e.mediaElement.width = 600;
videosContainer.appendChild(e.mediaElement);
rotateVideo(e.mediaElement);
scaleVideos();
};
function rotateVideo(mediaElement) {
mediaElement.style[navigator.mozGetUserMedia ? 'transform' : '-webkit-transform'] = 'rotate(0deg)';
setTimeout(function() {
mediaElement.style[navigator.mozGetUserMedia ? 'transform' : '-webkit-transform'] = 'rotate(360deg)';
}, 1000);
}
connection.onstreamended = function(e) {
e.mediaElement.style.opacity = 0;
rotateVideo(e.mediaElement);
setTimeout(function() {
if (e.mediaElement.parentNode) {
e.mediaElement.parentNode.removeChild(e.mediaElement);
}
scaleVideos();
}, 1000);
};
var sessions = {};
connection.onNewSession = function(session) {
if (sessions[session.sessionid]) return;
sessions[session.sessionid] = session;
var tr = document.createElement('tr');
tr.innerHTML = '<td><strong>' + session.sessionid + '</strong> is an active room.</td>' +
'<td><button class="join">Join the Room</button></td>';
roomsList.insertBefore(tr, roomsList.firstChild);
var joinRoomButton = tr.querySelector('.join');
joinRoomButton.setAttribute('data-sessionid', session.sessionid);
joinRoomButton.onclick = function() {
this.disabled = true;
var sessionid = this.getAttribute('data-sessionid');
session = sessions[sessionid];
if (!session) throw 'No such session exists.';
connection.join(session);
};
};
var videosContainer = document.getElementById('videos-container') || document.body;
var roomsList = document.getElementById('rooms-list');
document.getElementById('setup-new-broadcast').onclick = function() {
this.disabled = true;
connection.dontCaptureUserMedia = true;
connection.sdpConstraints.mandatory = {
OfferToReceiveAudio: true,
OfferToReceiveVideo: true
};
connection.open(document.getElementById('broadcast-name').value || 'Anonymous');
};
connection.dontCaptureUserMedia = false;
connection.sdpConstraints.mandatory = {
OfferToReceiveAudio: false,
OfferToReceiveVideo: false
};
// setup signaling to search existing sessions
connection.connect();
(function() {
var uniqueToken = document.getElementById('unique-token');
if (uniqueToken)
if (location.hash.length > 2) uniqueToken.parentNode.parentNode.parentNode.innerHTML = '<h2 style="text-align:center;"><a href="' + location.href + '" target="_blank">Share this link</a></h2>';
else uniqueToken.innerHTML = uniqueToken.parentNode.parentNode.href = '#' + (Math.random() * new Date().getTime()).toString(36).toUpperCase().replace(/\./g, '-');
})();
function scaleVideos() {
var videos = document.querySelectorAll('video'),
length = videos.length,
video;
var minus = 130;
var windowHeight = 700;
var windowWidth = 600;
var windowAspectRatio = windowWidth / windowHeight;
var videoAspectRatio = 4 / 3;
var blockAspectRatio;
var tempVideoWidth = 0;
var maxVideoWidth = 0;
for (var i = length; i > 0; i--) {
blockAspectRatio = i * videoAspectRatio / Math.ceil(length / i);
if (blockAspectRatio <= windowAspectRatio) {
tempVideoWidth = videoAspectRatio * windowHeight / Math.ceil(length / i);
} else {
tempVideoWidth = windowWidth / i;
}
if (tempVideoWidth > maxVideoWidth)
maxVideoWidth = tempVideoWidth;
}
for (var i = 0; i < length; i++) {
video = videos[i];
if (video)
video.width = maxVideoWidth - minus;
}
}
window.onresize = scaleVideos;
</script>
<section class="experiment own-widgets latest-commits">
<h2 class="header" id="updates" style="color: red;padding-bottom: .1em;"><a href="https://github.com/muaz-khan/RTCMultiConnection/commits/master">Latest Updates</a></h2>
<div id="github-commits"></div>
</section>
<section class="experiment own-widgets">
<h2 class="header" id="updates" style="color: red;padding-bottom: .1em;"><a href="https://github.com/muaz-khan/RTCMultiConnection/issues">Latest Issues</a></h2>
<div id="github-issues"></div>
</section>
<section class="experiment">
<h2 class="header" id="feedback">Feedback</h2>
<div>
<textarea id="message" style="height: 8em; margin: .2em; width: 98%; border: 1px solid rgb(189, 189, 189); outline: none; resize: vertical;" placeholder="Have any message? Suggestions or something went wrong?"></textarea>
</div>
<button id="send-message" style="font-size: 1em;">Send Message</button><small style="margin-left:1em;">Enter your email too; if you want "direct" reply!</small>
</section>
</article>
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<footer>
<a href="https://www.webrtc-experiment.com/" target="_blank">WebRTC Experiments!</a> and
<a href="http://www.RTCMultiConnection.org/docs/" target="_blank">RTCMultiConnection.js</a> ©
<a href="mailto:muazkh@gmail.com" target="_blank">Muaz Khan</a>:
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