android - 如何从android播放rtsp直播？(rtsp://someserver:port/live/001204A006F5.stream)

Question

我有这个视频 url rtsp://someserver:port/live/001204A006F5.stream 并想从 android 媒体播放器播放相同的视频。我已经编写了以下代码片段，但 android 显示了一个带有消息“无法播放此视频”的对话框。

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);`

    videoPlayer = (VideoView) findViewById(R.id.videoPlayer);   
    videoPlayer.setOnPreparedListener(this);
    videoPlayer.setOnCompletionListener(this);
    videoPlayer.setKeepScreenOn(true);    
    Uri uri = Uri.parse("rtsp://someserver:port/live/001204A006F5.stream");
    videoPlayer.setVideoURI(uri);
}

/** This callback will be invoked when the file is ready to play */
public void onPrepared(MediaPlayer vp) {
    if(videoPlayer.canSeekForward()) videoPlayer.seekTo(videoPlayer.getDuration()/5);
       videoPlayer.start();
}

难道我做错了什么？或者无法使用 VideoView 播放该链接？