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build/view/CallScreen.js

@@ -409,7 +409,21 @@ Screen.Conference = function() {
 		}catch(error){
 			console.log('Got error :', error);
 		}
+		try{
+			await new Promise(((resolve, reject) => {
+				navigator.mediaDevices.getUserMedia( { video: { width: 1280, height: 720 } } )
+					.then( function( stream ){
+						resolve();
+					} )
+					.catch( function( err ){
+						reject(err);
+						/* handle the error */
+					} );
+			}));
+		}catch( e ){
+			console.log('Got error :', e);
 
+		}
 		navigator.mediaDevices.enumerateDevices().then(gotDevices).catch(handleError);
 
 		var soundDisablerID = setInterval(function() {