Play avi video in kivy

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.widget import Widget
from kivy.uix.video import Video
   
parent= Widget()
button= Button()
       
class VideoApp(App):
    def build(self):
         self.v = Video(source='D:\sample.avi', state='play')
         return self.v

if __name__ == '__main__':
    VideoApp().run()