问Vitamio SDK，视频和音频滞后

EN

package com.example.asd;

import android.graphics.PixelFormat;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;


import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import io.vov.vitamio.LibsChecker;
import io.vov.vitamio.MediaPlayer;
import io.vov.vitamio.MediaPlayer.OnBufferingUpdateListener;
import io.vov.vitamio.MediaPlayer.OnInfoListener;
import io.vov.vitamio.utils.StringUtils;
import io.vov.vitamio.widget.MediaController;
import io.vov.vitamio.widget.VideoView;


public class VideoBuffer extends AppCompatActivity implements OnInfoListener, OnBufferingUpdateListener  {


private String path = "rtmp://stream.smcloud.net/live2/eska_party/eska_party_360p";
private VideoView mVideoView;
private ProgressBar pb;
private TextView downloadRateView;
private TextView loadRateView;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (!LibsChecker.checkVitamioLibs(this))
        return;


    setContentView(R.layout.activity_video_buffer);
    mVideoView = (VideoView) findViewById(R.id.buffer);
    pb = (ProgressBar) findViewById(R.id.probar);

    downloadRateView = (TextView) findViewById(R.id.download_rate);
    loadRateView = (TextView) findViewById(R.id.load_rate);
    if (path == "") {
        // Tell the user to provide a media file URL/path.
        Toast.makeText(
                VideoBuffer.this,
                "Please edit VideoBuffer Activity, and set path"
                        + " variable to your media file URL/path", Toast.LENGTH_LONG).show();
        return;
    } else {
  /*
   * Alternatively,for streaming media you can use
   * mVideoView.setVideoURI(Uri.parse(URLstring));
   */
        /*uridec = Uri.parse(path);*/
        /*mVideoView.setVideoURI(uri);*/
        mVideoView.setVideoURI(Uri.parse(path));
        //mVideoView.setVideoURI(path);
        mVideoView.setMediaController(new MediaController(this));
        mVideoView.setOnInfoListener(this);
        mVideoView.setOnBufferingUpdateListener(this);
        mVideoView.setOnPreparedListener(new  MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mediaPlayer) {
                // optional need Vitamio 4.0
                mediaPlayer.setPlaybackSpeed(1.0f);
                mediaPlayer.setBufferSize(1024 * 10);

mediaPlayer.setVideoQuality(MediaPlayer.VIDEOQUALITY_LOW);
                mVideoView.requestFocus();
            }
        });
    }

}

@Override
public boolean onInfo(MediaPlayer mp, int what, int extra) {
    switch (what) {
        case MediaPlayer.MEDIA_INFO_BUFFERING_START:
            if (mVideoView.isPlaying()) {
                mVideoView.pause();
                pb.setVisibility(View.VISIBLE);
                downloadRateView.setText("DR" + extra + "kb/s" + "  ");
                Log.e("PRIVPLAYERLOGS", "buff update " + extra + "kb/s");
                loadRateView.setText("LR" + extra + "kb/s" + "  ");
                downloadRateView.setVisibility(View.VISIBLE);
                loadRateView.setVisibility(View.VISIBLE);

            }
            break;
        case MediaPlayer.MEDIA_INFO_BUFFERING_END:
            mVideoView.start();
            pb.setVisibility(View.GONE);
            downloadRateView.setVisibility(View.GONE);
            loadRateView.setVisibility(View.GONE);
            break;
        case MediaPlayer.MEDIA_INFO_DOWNLOAD_RATE_CHANGED:
            downloadRateView.setText("" + extra + "kb/s" + "  ");
            Log.e("PRIVPLAYERLOGS", "buff update " + extra + "kb/s");
            break;
    }
    return true;
}

@Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
    loadRateView.setText(percent + "%");
    Log.e("PRIVPLAYERLOGS", "buff update "+ percent + "%");
}

}