docs: def init(size=250):
      """Initialize mpv."""
      player = mpv.MPV(start_event_thread=False)
      player["force-window"] = "immediate"
      player["keep-open"] = "yes"
      player["geometry"] = f"{size}x{size}"
      player["autofit"] = f"{size}x{size}"
      player["title"] = "bum"
  
      return player