How To Swap Camera Sources In Webrtc While In A Call (javascript Apis)

On iOS I can do: // set a new camera id cameraId = ([cameraId isEqualToString:frontCameraId]) ? backCameraId : frontCameraId; // determine if the stream has a video track BOOL h

Solution 1:

This is an experimental technology

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WebRTC Javascript code samples contain an example of camera selection :

• https://webrtc.github.io/samples/src/content/devices/input-output/

with source code available on github :

• https://github.com/webrtc/samples
  • https://github.com/webrtc/samples/blob/gh-pages/src/js/adapter.js

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Get video|audio sources using MediaDevices.enumerateDevices (on chrome and firefox)

• https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/enumerateDevices

• MediaStreamTrack.getSources (only chrome) was deprecated in favour of MediaDevices.enumerateDevices()

---

navigator.mediaDevices.enumerateDevices =
        navigator.mediaDevices.enumerateDevices || function() {
          returnnewPromise(function(resolve) {
            var infos = [
              {kind: 'audioinput', deviceId: 'default', label: '', groupId: ''},
              {kind: 'videoinput', deviceId: 'default', label: '', groupId: ''}
            ];
            resolve(infos);
          });
        };

    if (browserDetails.version < 41) {
      // Work around http://bugzil.la/1169665var orgEnumerateDevices =
          navigator.mediaDevices.enumerateDevices.bind(navigator.mediaDevices);
      navigator.mediaDevices.enumerateDevices = function() {
        returnorgEnumerateDevices().then(undefined, function(e) {
          if (e.name === 'NotFoundError') {
            return [];
          }
          throw e;
        });
      };
    }
  }

to swap cameras, @omar-khaled answer from @wpp Changing a MediaStream of RTCPeerConnection

• https://www.webrtc-experiment.com/docs/how-to-switch-streams.html

---

_this.rtc.localstream.stop();
_this.rtc.pc.removeStream(_this.rtc.localstream);

gotStream = function (localstream_aud){
var constraints_audio={
    audio:true
   }

_this.rtc.localstream_aud = localstream_aud;
_this.rtc.mediaConstraints= constraints_audio;   
_this.rtc.createOffer();
}
getUserMedia(constraints_audio, gotStream);

gotStream = function (localstream){
var constraints_screen={
        audio:false,
        video:{
            mandatory:{
                chromeMediaSource: 'screen'
            }
        }
    }
  _this.rtc.localstream = localstream;
  _this.rtc.mediaConstraints=constraints_video;


  _this.rtc.createStream();  
  _this.rtc.createOffer();
}
getUserMedia(constraints_video, gotStream);