replaceTrack and InvalidModificationError

OpenVidu v2 Issues developing apps
1

Hello.
I want to switch video source on the fly, for screensharing. I read https://openvidu.io/docs/advanced-features/switch-camera/ and try to use navigator.mediaDevices.getDisplayMedia(), but replaceTrack function got exception InvalidModificationError. Can you explain what i need to do next? I do not understand. Reset with reload or initPublisher is not an option. Thanks.

2

Ok. My bad. I have been replaced audio track with video track(from the example in doc, where getSenders()[0] return audio. But i changed it to [1](get video sender), now no exceptions, but video not changed. replaceTrack function returned undefined instead track.

3

No luck here for the same problem. Did you get it done then?

4

it works well with 2.12.0 version now. I think in 2.11.0 its broken.

5

You are right. Tried with 2.12.0 and now it runs correctly. Working code:

// Switch to screen share
OV.getUserMedia({audioSource: false, videoSource: 'screen'})
.then(function (media) {
    var track = media.getVideoTracks()[0];
    publisher.replaceTrack(track);
});

// Switch back to camera
OV.getUserMedia({audio: false, video: true})
.then(function(media) {
    var track = media.getVideoTracks()[0];
    publisher.replaceTrack(track);
});