javascriptwebrtcscreensharingrtcmulticonnection

RTCMultiConnection exception on connection.addStream()

I'm trying to switch source - screen to webcam (LIVE). I've started from function addStream() and after executing it I'm getting this error:

DOMException: Failed to execute 'webkitGetUserMedia' on 'Navigator': At least one of audio and video must be requested(…) Object {audio: false, video: false}

Here is the code:

       function switchToWebcam() {

            connection.sdpConstraints.mandatory = {
                OfferToReceiveAudio: true,
                OfferToReceiveVideo: true
            };

            connection.addStream({
                video: true,
                audio: true
            });
        }

Maybe there are other ways to switch source. Just can't find an example. Thanks.

Solution

  • Here is how to add audio+video stream in a screensharing session:

    connection.session.audio = true;
connection.session.video = true;

connection.addStream({
    audio: true, // because session.audio==true, now it works
    video: true, // because session.video==true, now it works
    oneway: true
});

    You can try this audio+screen demo on Canary. This demo has "Add Video" button as well.