Android VideoView not playing video

I have a problem with my VideoView. Just tried making a simple example:

public class MainActivity extends ActionBarActivity {

String url = "http://videoguides.avs4you.com/How-to-convert-3GP-video.aspx";
VideoView video;

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

    video = (VideoView) findViewById(R.id.videoView);

    video.setVideoPath(url);
    video.start();
    Toast.makeText(getBaseContext(),url,Toast.LENGTH_LONG).show();

}

      

        
        
        
      

    

}

But I am getting the following errors:

Sometimes I just get sound but a black video screen. Plus I am not getting any errors in my LogCat!