我想用vlcj从rtsp流中获取元数据。rtsp流没有视频和音频数据。只有元数据具有分析信息。当我启动时，它会崩溃并关闭。日志文件“设置rtsp会话失败”中出错。如何使用vlcj获取元数据文件？

String[] VLC_ARGS = {
            "--intf", "dummy",          // no interface
            "--vout", "dummy",          // we don't want video (output)
            "--no-audio",               // we don't want audio (decoding)
    };
    MediaPlayerFactory mediaPlayerFactory = new MediaPlayerFactory(VLC_ARGS);

    EmbeddedMediaListPlayerComponent mediaPlayerComponent = new EmbeddedMediaListPlayerComponent();

    // Create player.
    HeadlessMediaPlayer mediaPlayer = mediaPlayerFactory.newHeadlessMediaPlayer();

    // Select input device.
    String mrl = "rtsp://user:pass@192.168.1.90/axis-media/media.amp?video=0&audio=0&event=off&analytics=polygon";

    mediaPlayer.playMedia(mrl);
    mediaPlayer.addMediaPlayerEventListener(new MediaPlayerEventListener() {

        @Override
        public void mediaMetaChanged(MediaPlayer mediaPlayer, int metaType) {
            System.out.println("metadata changed");

        }

    }