VLC控制器未渲染视频

我正在尝试从这个rtsp url流式传输视频。当我运行应用程序时,我没有得到任何错误,但视频没有渲染。我可以在其他应用程序上查看此流,但不能在此应用程序上查看。请参阅下面我的代码:

private void Form1_Load(object sender, EventArgs e)
{
    vlcControl1 = new VlcControl();
    vlcControl1.BeginInit();
    vlcControl1.VlcLibDirectory = new DirectoryInfo(@"C:\Program Files (x86)\VideoLAN\VLC");
    vlcControl1.VlcMediaplayerOptions = new[] { "-vv" };
    vlcControl1.EndInit();
    //Controls.Add(this.vlcControl1);

    string[] options = { ":network-caching=30" };

    vlcControl1.Play(new Uri("rtsp://Admin:tplex1234@172.23.111.102:554/cam/realmonitor?channel=1&subtype=1&unicast=true&proto=Onvif"), options);
}