Resolved it by myself:
while time.time() - startT < source.duration:
pyglet.clock.tick() # This is the key, but I don't know why...
win.dispatch_events()
win.dispatch_event('on_draw')
win.flip()
在 2016年12月31日星期六 UTC+8下午3:08:39，杨金骉写道：
>
> import pyglet
> import time
>
> win = pyglet.window.Window()
> win.switch_to()
>
> player = pyglet.media.Player()
> source = pyglet.media.load('data/demo.mpg')
>
> player.queue(source)
> player.play()
>
> @win.event
> def on_draw():
> win.clear()
> if source and source.video_format:
> player.get_texture().blit(100,200)
>
> startT = time.time()
> while time.time() - startT < source.duration:
> win.dispatch_events()
> time.sleep(0.01)
>
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