Thanks for your post. All steps’ve been done including Scaledron ID and changing http to https. All is on a server.
But I see only myself in the left video container (see your html), my remote friend see only himself on the same place in the left container. What is wrong?
It seems that scaledrone or java script sees me as a remote user, I think that your example misses an essential part which is how to become a local user, there should be some simple register form, for instance, where I can input my secrete key or some access code. Right? I’m dumb at this, not a programmer at all.
2 replies
I pinged the author to see if he can chime in on this, for RTC is not my area of familiarity 
Hi sergee, JavaScript code is fine. It is the same as in the post, I’ve only changed Scaledrone channal ID (I registered to Scaledrone), so it works as the example one does only for remote users. You may check the example (see the post), it works the same as my page does. Now I understand that the code doesn’t provide some registration form to accept my ip address, or how it works I don’t know, to set me as a local user. Scaledrone provide a registration solution to a site, but it is all for programmers, my occupation is different, I can only use a ready solution.
You are correct. Scaledrone simply offers a way to connect two hosts and is targeted for developers. If you want an out of the box video solution I highly recommend looking into a ready solution.
Unfortunately I’m not exactly sure what is going wrong. If you still want to use Scaledrone then please upload and share the project with me, otherwise it’s impossible for me to debug it.
1 reply
Hey Kirupa
Thanks for interesting tutorial and simple solution for a video chat.
I recreated your example and it works when both peers are in the same local network.
However when one is on local wi-fi and seccond is on cellural network the video chat doesn`t start. It is strange because the script detects 2 members and I can send text messages between peers, only the video chat does not fire up.
Any ideas why? Maybe it is some security limitation in browser??
Thanks in advance
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Is the video the only thing that isn’t playing via the cellular network? Does the browser developer tools console show any errors? For the cellular test, are you viewing on a mobile device? If so, which device? 
firstly, thank u for this project, this is very good for me… but how can 3 or much person connected for group chat? i can’t this 
That will require a more elaborate setup on the server. I would look into custom 3rd party streaming services for that level of functionality 
The NAT traversal with STUN doesn’t work. I ran the demo with one computer on WIFI and the other on cellular hotspot and it doesn’t work
Hi! I have the same problem. I open the url in two differents devices and in both I see myself as localvideo. I changed the ID, but doesn´t work. I need help, please.
How well would this work on a security camera controlled using a Raspberry Pi? The application uses the Nodejs webserver running express framework to handle pan, tilt and zoom. Do you think it will work ? Thanks, your code has been the best documented I have found
i also have the same problem i only see the local video. when we connect the same network its working fine but when we connect different devices with different network it only shows the local video please anyone give me the solution for this
thanks in advance…!
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Is there any way to get more that two people in a call using this same method?
current site at: https://gameplexcorp.weebly.com/meetup-room.html#testroom
This method is incompatible with the safari browser if that is what you are trying to use.
Hello,
I have two different webcams, how do I add the button / task that I can switch between?
Also, can the participant switch between my cameras?
“For example, if the participant wants to see my detail camera, he / she can select it over the system, if he / she wants a general view, he / she should choose my other camera.”
Thanks in advance
1 reply
This link should help you: html5 video - Accessing Multiple camera javascript getusermedia - Stack Overflow
navigator.mediaDevices.getUserMedia({
video: {
deviceId: { exact: camera1Id }
}
});
You’re a gorgeous person, I’ll try right away.
I hope I can.
I’m trying, but I guess it’s not what I want.
My goal is to ensure that the person connecting to the call can switch between my cameras.
You can see my cameras with a “camera switch” button.
How can I do this by changing where in the code line below?
// Generate random room name if needed
if (!location.hash) {
location.hash = Math.floor(Math.random() * 0xFFFFFF).toString(16);
}
const roomHash = location.hash.substring(1);
// TODO: Replace with your own channel ID
const drone = new ScaleDrone(‘2xmbUiTsqTzukyf7’);
// Room name needs to be prefixed with ‘observable-’
const roomName = ‘observable-’ + roomHash;
const configuration = {
iceServers: [{
urls: ‘stun:stun.l.google.com:19302’
}]
};
let room;
let pc;
function onSuccess() {};
function onError(error) {
console.error(error);
};
drone.on(‘open’, error => {
if (error) {
return console.error(error);
}
room = drone.subscribe(roomName);
room.on(‘open’, error => {
if (error) {
onError(error);
}
});
// We’re connected to the room and received an array of ‘members’
// connected to the room (including us). Signaling server is ready.
room.on(‘members’, members => {
console.log(‘MEMBERS’, members);
// If we are the second user to connect to the room we will be creating the offer
const isOfferer = members.length === 2;
startWebRTC(isOfferer);
});
});
// Send signaling data via Scaledrone
function sendMessage(message) {
drone.publish({
room: roomName,
message
});
}
function startWebRTC(isOfferer) {
pc = new RTCPeerConnection(configuration);
// ‘onicecandidate’ notifies us whenever an ICE agent needs to deliver a
// message to the other peer through the signaling server
pc.onicecandidate = event => {
if (event.candidate) {
sendMessage({‘candidate’: event.candidate});
}
};
// If user is offerer let the ‘negotiationneeded’ event create the offer
if (isOfferer) {
pc.onnegotiationneeded = () => {
pc.createOffer().then(localDescCreated).catch(onError);
}
}
// When a remote stream arrives display it in the #remoteVideo element
pc.onaddstream = event => {
remoteVideo.srcObject = event.stream;
};
navigator.mediaDevices.getUserMedia({
audio: true,
video: true,
}).then(stream => {
// Display your local video in #localVideo element
localVideo.srcObject = stream;
// Add your stream to be sent to the conneting peer
pc.addStream(stream);
}, onError);
// Listen to signaling data from Scaledrone
room.on(‘data’, (message, client) => {
// Message was sent by us
if (client.id === drone.clientId) {
return;
}
if (message.sdp) {
// This is called after receiving an offer or answer from another peer
pc.setRemoteDescription(new RTCSessionDescription(message.sdp), () => {
// When receiving an offer lets answer it
if (pc.remoteDescription.type === 'offer') {
pc.createAnswer().then(localDescCreated).catch(onError);
}
}, onError);
} else if (message.candidate) {
// Add the new ICE candidate to our connections remote description
pc.addIceCandidate(
new RTCIceCandidate(message.candidate), onSuccess, onError
);
}
});
}
function localDescCreated(desc) {
pc.setLocalDescription(
desc,
() => sendMessage({‘sdp’: pc.localDescription}),
onError
);
}
A remote person changing your local camera is difficult (or impossible) to implement, for there are security implications that block this behavior. This is something that you have to initiate through an action on your local machine itself.
Have you seen examples of apps or services that are able to do what you are trying to do?
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I do not know such a system. However, it was possible to switch between online traffic cameras and security cameras.
I’m running your source code on https://artunduzay.com/digitalinspection/index.
Is it possible to show two cameras at the same time as User and Enviroment and add “ull screen” feature?
In this case, the participant can view the camera he wants to watch in full screen.
The microphone will remain the default device.
If you can help me with this, I would be very happy.
I don’t want to take any more of your time.
Thanks in advance,
sample1- I can get two camera streams in the link below.
multiple camera stream sample
sample2- In the link below, I can stop this camera and make it full screen.
webcam/camera streaming via video player template
What I want is to add the simultaneous broadcasting feature of (sample1) two cameras to the code you wrote, and (sample2) to make it full screen and pause as in the video player interface.
The microphone can remain the default device.
Can you please check it?
1 reply
Hi really simple and helpful post to start with WebRTC. Is this possible to Record this 1:1 Video chat along with Audio ? if yes then can someone guide in right direction please.
Hello Sir Thank you for this tutorial I found this helpful.
But I am facing an issue in connecting using different network.
I am using one device on my wifi and other device on my cellular network but I can’t create stream in this way. kindly guide me.
can anyone help me change it to use MQTT instead of scalardrone !!
