public VideoPage()
        {
            this.InitializeComponent();

            mediaElement.AutoPlay = true;
            SetMovieSource();

            var cmp = new CommentPresenter();

            cmp.Load("test.nicocomment");

            var canvast = new CanvasTarget(canvas)
            {
                Fps = textBlockFps
            };
            var videot = new VideoTarget(mediaElement);

            _timer = new DispatcherTimer()
            {
                Interval = TimeSpan.FromSeconds(1.0 / 30)
            };
            _timer.Tick += (f, e) =>
            {
                cmp.Draw(canvast, videot);
            };
            _timer.Start();
        }