Prevent problems playing some vimeo videos by adding default options

bigbluebutton-html5/imports/ui/components/external-video-player/component.jsx

@@ -47,6 +47,12 @@ class VideoPlayer extends Component {
     };
 
     this.opts = {
+      // default option for all players, can be overwritten
+      playerOptions: {
+        autoplay: true,
+        playsinline: true,
+        controls: true,
+      },
       file: {
         attributes: {
           controls: true,