request getUserMedia inside webview

[mibrhim]

Hello,
i have an issue with requesting the user media from the navigator object, i have downloaded the demo and added a line in the index.js inside www to request the user media using navigator.getUserMedia() and i rendered the stream as a url to a video.src which related with a video tag inside index.html in the www .. but the video appears without any video.
Note: i have added Camera and Microphone permission inside AndroidManifist.xml

Thanks in advance.