getUserMedia API suport for Opera Local screen share

Question

I am creating an Opera extension that will open a webpage which will allow user to stream a local window on to the browser html file. Since Opera extension structure is similar to the chrome, I tested the structure on Opera.

For manifest having permissons :

 "permissions": ["desktopCapture","activeTab"],

Error :

There were warnings when trying to install this extension:
Permission 'desktopCapture' is unknown or URL pattern is malformed.

And for using the method :

chrome.desktopCapture.chooseDesktopMedia(["screen", "window"], onAccessApproved);

Console error :

Uncaught TypeError: Cannot read property 'chooseDesktopMedia' of undefined 

Is there some documentation available for Opera regarding getUserMedia API usage that can help in the matter Already gone through :
* https://dev.opera.com/articles/getusermedia-access-camera-privacy-ui/
* https://dev.opera.com/tags/getusermedia/
* WebRTC official page

Answer 1

The desktopCapture is not supported in Opera yet so you can't use it. There is no other way to share other application window I could see to work now.