anchor.diff:              #main
                   // Main Content
                   // show
  -                select#videoSource
  +                //- select#videoSource
                   #demoContainer
                       #videos
                           video#selfVideo.easyrtcMirror(autoplay='autoplay',muted="true",volume=0)
  
positive.code:                         span.record-camera-controls
                            button#stopRecording(disabled='disabled', onclick='endRecording();')
                              img(src='/images/endrecording.png')
                            button#switchRecording(disabled='disabled')
                              img(src='/images/switchrecording.png')
              #footer
                 
      style.
  
negative.code:               }
              }
            };
            
            selfRecorder = easyrtc.recordToCallback( easyrtc.getLocalStream(), 
                   callback,1000);
            if( selfRecorder ) {
  