switch camera during call peer js webrtc? - webrtc

Question

we are using peer js webrtc for video call. Everything is working fine just the problem is i am not able to switch camera during call. I have done some work where i can switch camera in local during call but its doesnt effect on remote area.
here is my code
$('select').on('change', function (e) {
navigator.mediaDevices.enumerateDevices().then(function (devices) {
var valueSelected = $("#myselect option:selected").val();
alert(valueSelected);
//var myselect = 0;
if (valueSelected == "0") {
var cameras = [];
devices.forEach(function (device) {
'videoinput' === device.kind && cameras.push(device.deviceId);
});
var constraints = { video: { deviceId: { exact: cameras[0] } } };
navigator.mediaDevices.getUserMedia(constraints).then(function (stream) {
window.localStream = stream;
myapp.setMyVideo(window.localStream)
//if (callback)
// callback();
}, function (err) {
console.log("The following error occurred: " + err.name);
alert('Unable to call ' + err.name)
});
}
else {
var cameras = [];
devices.forEach(function (device) {
'videoinput' === device.kind && cameras.push(device.deviceId);
});
var constraints = { video: { deviceId: { exact: cameras[1] } } };
navigator.mediaDevices.getUserMedia(constraints).then(function (stream) {
window.localStream = stream;
myapp.setMyVideo(window.localStream)
//if (callback)
// callback();
}, function (err) {
console.log("The following error occurred: " + err.name);
alert('Unable to call ' + err.name)
});
}
//var myselect = $("#myselect option:selected").val();
});
});

Answer 1

The recommended way to change stream when a peer-to-peer connection is established is to use replaceTrack function that does not require ICE renegotiation:
RTCRtpSender.replaceTrack
The documentation says:
Among the use cases for replaceTrack() is the common need to switch between the rear- and front-facing cameras on a phone. With replaceTrack(), you can simply have a track object for each camera and switch between the two as needed. See the example...