vlcj 从 rtsp 流中获取元数据

如何解决vlcj 从 rtsp 流中获取元数据

我想使用 vlcj 从 RTSP 流中获取元数据。 RTSP 流没有视频和音频数据。只有具有分析信息的元数据。当我启动它时崩溃并关闭。日志文件中的错误“无法设置 RTSP 会话”。 如何使用 vlcj 获取元数据文件？

    String[] VLC_ARGS = {
            "--intf","dummy",// no interface
            "--vout",// 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");
    
        }

    }