Allow WebRTC webcam request using when QtWebEngine

[joelmar]

How do I Allow WebRTC webcam request in QtWebEngine (using QML plugin or not)?

My code sample webengine.qml

import QtQuick 2.1
import QtQuick.Controls 1.1
import QtWebEngine 1.0

ApplicationWindow {
    width: 800
    height: 600
    color: "lightgray"
    visible: true
    WebEngineView {
        id: webview
        url: "https://opentokrtc.com/test"
        anchors.fill: parent
    }
}

On my Mac Yosemite, running the command:

 /usr/local/Cellar/qt5/5.4.0/bin/qmlscene webengine.qml 

but the video won't start because it's waiting for "Allow" camera, but not dialog pops to let me do that.

In other words, is there a way to programmatically set Chromium Web Engine policy e.g. VideoCaptureAllowed

[kkoehne]

You need to connect to the featurePermissionRequested of the WebView, i.e.

    onFeaturePermissionRequested: {
        grantFeaturePermission(securityOrigin, feature, true);
    }