How can I get the video to hide itself when it's done? Right now the on_stop callback never gets called

kivytest.py

videos= glob(join(dirname('.'), '*.mp4'))
keys=['a','s','d','f','g','h','j','k','l']
videodict=dict(zip(keys,videos))

class VideoLayout(FloatLayout):


    def __init__(self, **kwargs):
        super(VideoLayout, self).__init__(**kwargs)
        self._keyboard = Window.request_keyboard(self._keyboard_closed, self)
        self._keyboard.bind(on_key_down=self.keypress)
        self.video_list=[
                {
                 'name':video, 
                 'video':
                    Video(source=video,
                          state='stop', 
                          id='playingvideo', 
                          pos=(0,0), 
                          allow_stretch=True, 
                          size_hint=(1,1)
                        )
                } for video in videos]
        for v in self.video_list:

            print v['video'].events()
            v['video'].bind(on_stop=self.stop_if_done())
    def _keyboard_closed(self):
        self._keyboard.unbind(on_key_down=self.keypress)
        self._keyboard = None
    def stop_if_done(self, *args):
        if isinstance(self.children[0],Video):
            self.remove_widget(self.children[0])
    def keypress(self, keyboard, keycode, text, modifiers):
        #keycode[1] is the key
        print keycode[1]
        global videodict
        #self.video_box.source = videos[video_num]
        
        print videodict[keycode[1]]
        video = next((v['video'] for v in self.video_list if v['name']==videodict[keycode[1]]),None)
        if video:
            print video
            print self.children
            if isinstance(self.children[0],Video):
                try:
                    self.children[0].state='stop'
                    self.remove_widget(self.children[0])
                    
                except AttributeError:
                    pass
            video.seek(0)
            video.state='play'

            self.add_widget(video,index=0)
            self.current_video=video

        return True 
        
class TestApp(App):

    def build(self):
        
        
        global videos
        
        
        root = VideoLayout()
        #root.add_widget(self.background_img)
        #root.add_widget(Video())
        #root.add_widget(Rectangle(source='0-0.png'))
        return root
        

looks like it's bugged in 1.8 with gstreamer and on_eos and on_state dont trigger. Instead use position and duration