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我可以在 Google TV 上成功播放 HLS（IPTV）视频流，但是视频播放时有些模糊（屏幕底部出现模糊线），谁能帮我避免这个？是否有任何解决问题，如果有如何避免？

这是我的代码：

public class HLSActivity extends Activity
        implements AudioManager.OnAudioFocusChangeListener, MediaPlayer.OnCompletionListener,
        MediaPlayer.OnErrorListener {
    public static final String TAG = "VPActivity";
    Button button;
    public VideoView mVideoView = null;
    private LayoutParams mDefaultVideoViewSize;

    // Handle AudioFocus issues
    @Override
    public void onAudioFocusChange(int focusChange) {
        switch(focusChange) {
            case AudioManager.AUDIOFOCUS_GAIN:
                Log.i(TAG, "AF Gain");
                if (mVideoView != null)
                    mVideoView.resume();
                break;

            case AudioManager.AUDIOFOCUS_LOSS:
                Log.i(TAG, "AF Loss");
                if (mVideoView != null)
                    mVideoView.stopPlayback();
                mVideoView = null;
                this.finish(); // Let's move on.
                break;

            case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT:
            case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK:
                Log.i(TAG, "AF Transient");
                if (mVideoView != null)
                    mVideoView.pause();
                break;
        }
    }

    @Override
    public void onCompletion(MediaPlayer mp) {
        Log.i(TAG, "done.");
        mVideoView = null;

        this.finish();
    }


    @Override
    public boolean onError(MediaPlayer mp, int what, int extra) {
        Log.e(TAG, "IO Error e=" + what + " x=" + extra);
        return false; // Will call onCompletion
    }

    @Override
    public void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_sandbox);

        // Request Audio Focus
        AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        int result = am.requestAudioFocus(this, AudioManager.STREAM_MUSIC,
                AudioManager.AUDIOFOCUS_GAIN);
        if (result != AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
            Log.e(TAG, "Can't get AudioFocus " + result);
            this.finish(); // Just give up.
        }



        mVideoView = (VideoView) findViewById(R.id.videoView);
        mVideoView.setVideoPath("http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4");
        mVideoView.setOnCompletionListener(this);
        mVideoView.setOnErrorListener(this);

        MediaController mc = new MediaController(this, true);
        mc.setMediaPlayer(mVideoView);
        mc.setAnchorView(mVideoView);
        mVideoView.setMediaController(mc);
        mVideoView.requestFocus();
        mVideoView.start();
        mDefaultVideoViewSize = mVideoView.getLayoutParams();
    }

}

我的 LayoutXML 是：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <VideoView
   android:id="@+id/videoView1"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent" />

</LinearLayout>
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