diff --git a/openlp/core/ui/media/mediacontroller.py b/openlp/core/ui/media/mediacontroller.py
index aab68f017..021c444cf 100644
--- a/openlp/core/ui/media/mediacontroller.py
+++ b/openlp/core/ui/media/mediacontroller.py
@@ -143,11 +143,6 @@ class MediaController(object):
             AppLocation.get_directory(AppLocation.AppDir),
             u'core', u'ui', u'media')
         for filename in os.listdir(controller_dir):
-            # TODO vlc backend is not yet working on Mac OS X.
-            # For now just ignore vlc backend on Mac OS X.
-            if sys.platform == 'darwin' and filename == 'vlcplayer.py':
-                log.warn(u'Disabling vlc media player')
-                continue
             if filename.endswith(u'player.py') and \
                 not filename == 'mediaplayer.py':
                 path = os.path.join(controller_dir, filename)
@@ -188,12 +183,16 @@ class MediaController(object):
         if not self.currentMediaPlayer.keys():
             self.timer.stop()
         else:
+            any_active = False
             for display in self.currentMediaPlayer.keys():
                 self.currentMediaPlayer[display].resize(display)
                 self.currentMediaPlayer[display].update_ui(display)
                 if self.currentMediaPlayer[display].state == \
                     MediaState.Playing:
-                    return
+                    any_active = True
+        # There are still any active players - no need to stop timer.
+            if any_active:
+                return
         # no players are active anymore
         for display in self.currentMediaPlayer.keys():
             if self.currentMediaPlayer[display].state != MediaState.Paused:
diff --git a/openlp/core/ui/media/phononplayer.py b/openlp/core/ui/media/phononplayer.py
index 05b3a22b3..5b91fea98 100644
--- a/openlp/core/ui/media/phononplayer.py
+++ b/openlp/core/ui/media/phononplayer.py
@@ -57,7 +57,7 @@ ADDITIONAL_EXT = {
         u'video/x-matroska': [u'.mpv', u'.mkv'],
         u'video/x-wmv': [u'.wmv'],
         u'video/x-mpg': [u'.mpg'],
-        u'video/mpeg' : [u'.mp4', u'.mts'],
+        u'video/mpeg' : [u'.mp4', u'.mts', u'.mov'],
         u'video/x-ms-wmv': [u'.wmv']}
 
 VIDEO_CSS = u"""
diff --git a/openlp/core/ui/media/vlcplayer.py b/openlp/core/ui/media/vlcplayer.py
index ebe3d31bb..658070154 100644
--- a/openlp/core/ui/media/vlcplayer.py
+++ b/openlp/core/ui/media/vlcplayer.py
@@ -125,18 +125,21 @@ class VlcPlayer(MediaPlayer):
         display.vlcWidget.resize(display.size())
         display.vlcWidget.raise_()
         display.vlcWidget.hide()
-        # the media player has to be 'connected' to the QFrame
+        # The media player has to be 'connected' to the QFrame.
         # (otherwise a video would be displayed in it's own window)
-        # this is platform specific!
-        # you have to give the id of the QFrame (or similar object) to
-        # vlc, different platforms have different functions for this
+        # This is platform specific!
+        # You have to give the id of the QFrame (or similar object)
+        # to vlc, different platforms have different functions for this.
+        win_id = int(display.vlcWidget.winId())
         if sys.platform == "win32":
-            display.vlcMediaPlayer.set_hwnd(int(display.vlcWidget.winId()))
+            display.vlcMediaPlayer.set_hwnd(win_id)
         elif sys.platform == "darwin":
-            display.vlcMediaPlayer.set_agl(int(display.vlcWidget.winId()))
+            # We have to use 'set_nsobject' since Qt4 on OSX uses Cocoa
+            # framework and not the old Carbon.
+            display.vlcMediaPlayer.set_nsobject(win_id)
         else:
             # for Linux using the X Server
-            display.vlcMediaPlayer.set_xwindow(int(display.vlcWidget.winId()))
+            display.vlcMediaPlayer.set_xwindow(win_id)
         self.hasOwnWidget = True
 
     def check_available(self):
@@ -156,6 +159,13 @@ class VlcPlayer(MediaPlayer):
         # parse the metadata of the file
         display.vlcMedia.parse()
         self.volume(display, volume)
+        # We need to set media_info.length during load because we want
+        # to avoid start and stop the video twice. Once for real playback
+        # and once to just get media length.
+        # 
+        # Media plugin depends on knowing media length before playback.
+        controller.media_info.length = \
+            int(display.vlcMediaPlayer.get_media().get_duration() / 1000)
         return True
 
     def media_state_wait(self, display, mediaState):
@@ -222,6 +232,7 @@ class VlcPlayer(MediaPlayer):
             display.vlcWidget.setVisible(status)
 
     def update_ui(self, display):
+        # Stop video if playback is finished.
         if display.vlcMedia.get_state() == vlc.State.Ended:
             self.stop(display)
         controller = display.controller