disableVideoContextMenu = () => {

public/react/src/App.js

@@ -334,8 +334,17 @@ class App extends Component {
 			})
 		}
 	}
+	disableVideoContextMenu = () => {
+		window.$( "body" ).on( "mousedown", "video",  function() {
+			if(event.which === 3) {
+				window.$('video').bind('contextmenu',function () { return false; });
+			} else {
+				window.$('video').unbind('contextmenu');
+			}
+		});
+	}
 	componentDidMount() {
-		
+		this.disableVideoContextMenu();
 
 		// force an update if the URL changes
 		history.listen(() => {