Android play multicast stream using vitamio

I have local multicast stream. Video is in MPEG4. I have Ip address of host (HOST) and port number on which I can get multicast stream (PORT). In order to get content I should connect and send multicast join request to get content.

import io.vov.vitamio.MediaPlayer;
import io.vov.vitamio.widget.MediaController;
import io.vov.vitamio.widget.VideoView;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.MulticastSocket;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Enumeration;

import android.app.Activity;
import android.content.Context;
import android.net.Uri;
import android.net.wifi.WifiManager;
import android.os.AsyncTask;
import android.os.Bundle;

public class MainActivity extends Activity {
    private static final String HOST = "192.168.1.1";
    private static final int PORT = 1234;
    int port;
    InetAddress address;
    DatagramSocket socket = null;
    DatagramPacket packet;
    byte[] sendBuf = new byte[256];
    private VideoView mVideoView;

    private MediaController mMediaController;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
            if (wifi != null) {
                WifiManager.MulticastLock lock = wifi.createMulticastLock("mylock");
                lock.acquire();
            }
            mVideoView = (VideoView) findViewById(R.id.video);
            mMediaController = new MediaController(this);

            mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                @Override
                public void onPrepared(MediaPlayer mediaPlayer) {
                    // optional need Vitamio 4.0
                    mediaPlayer.setPlaybackSpeed(1.0f);
                }
            });
        }

        @Override
        protected void onResume() {
            super.onResume();
            new AsyncTask<Void, Void, Void>() {
                @Override
                protected Void doInBackground(Void... params) {
                    try {
                        Enumeration<NetworkInterface> enumeration = NetworkInterface.getNetworkInterfaces();
                        NetworkInterface eth0 = null;
                        while (enumeration.hasMoreElements()) {
                            eth0 = enumeration.nextElement();
                            if (eth0.getName().equals("eth0")) {
                                // there is probably a better way to find ethernet
                                // interface
                                break;
                            }
                        }

                        InetAddress group = InetAddress.getByName(HOST);
                        MulticastSocket s = new MulticastSocket(PORT);
                        s.setReuseAddress(true);
                        s.setTimeToLive(1);
                        s.setSoTimeout(10000);
                        s.joinGroup(new InetSocketAddress(group, PORT), eth0);
                        Log.log("JOINED GROUP");
                        byte[] msg = {
                            'H', 'e', 'l', 'l', 'o'
                        };
                        DatagramPacket hi = new DatagramPacket(msg, msg.length, group, TVP_HD_PORT);
                        s.send(hi);
                        Log.log("SENT HI TO GROUP")

                        mVideoView.setVideoURI(Uri.parse("udp://" + HOST + ":" + PORT));
                        mVideoView.setMediaController(mMediaController);
                        mVideoView.requestFocus();
                    } catch (SocketException e) {
                        Log.log("FAIL");
                        e.printStackTrace();
                    } catch (UnknownHostException e) {
                        Log.log("FAIL");
                        e.printStackTrace();
                    } catch (IOException e) {
                        Log.log("FAIL");
                        e.printStackTrace();
                    }

                    return null;
                }
            }.execute();
        }
    }
}

I had some issues before s some of the code base on posts from other posts etc. I don't get any error from Vitamio, but I don't get any picture either. My Android device has ethernet socket thats why I selectd eth0 device (again, selection of device is based on some other post, I couldn't connect without it). Maybe someone tried using Vitamio for this? On many threads I found answer of one person that Vitamio can play udp streams, but never menion how, I used sample code from Vitamio library src code. Without luck.

Ok, so I figured it out. First of all I don't need to join the group before setVideoUri in VideoView. When using Vitamio whole communication needed by udp multicast (join group, leave group and confirm that you are still listening) is implemented. Second thing is a link. I used udp://HOST:PORT but it should be udp://@HOST:PORT (empty user). If you will try to test your udp stream in VLC then you should use link with @ too in order to play it.