kivy/examples/kv/app_video.kv

BoxLayout:

	orientation: 'vertical'
	spacing: 5
	padding: 5

	Video:
		id: myvideo
		source: '../widgets/softboy.avi'
		allow_stretch: True
		on_eos: self.play = True; print 'woot we are looping!'

	BoxLayout:
		size_hint_y: None
		height: 30

		Label:
			id: mylabel
			text: str(myvideo.position)

		Slider:
			value: myvideo.position
			max: myvideo.duration
			on_value: print args[1]

	BoxLayout:
		size_hint_y: None
		height: 50
		spacing: 5

		ToggleButton:
			group: 'video'
			text: 'Play'
			state: 'down' if myvideo.play else 'normal'
			on_press: myvideo.play = True

		ToggleButton:
			group: 'video'
			text: 'Stop'
			state: 'down' if not myvideo.play else 'normal'
			on_press: myvideo.play = False