@alvestrand Interestingly Firefox 68 sets the `MediaStreamTrack` `label` attribute to `"remote"` when passed to a WebRTC `PeerConnection` using `addTrack()` which results in the error `SecurityError: The operation is insecure.` when `MediaRecorder` `start()` method is executed. Have not been able to find that functionality described in https://w3c.github.io/mediacapture-fromelement or https://w3c.github.io/mediacapture-main/. Bug report https://bugzilla.mozilla.org/show_bug.cgi?id=1542616, plnkr https://plnkr.co/edit/l0RoRH. -- GitHub Notification of comment by guest271314 Please view or discuss this issue at https://github.com/w3c/mediacapture-main/issues/320#issuecomment-480662672 using your GitHub accountReceived on Monday, 8 April 2019 02:34:15 UTC
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