播放器用的Mediaplayer+ SurfaceView,也曾试过videoview，视频编码是AVC(H264)+分辨率480x384(5:4)+比特率250Kbps+16帧+48Kbps的AAC,格式是mp4。本地播放和在线播放都在4.4环境无法显示画面。4.2中可正常显示。请问这是什么原因？难道是视频编码的问题吗？

核心代码:

import android.app.Activity;

import android.media.AudioManager;

import android.media.MediaPlayer;

import android.os.Bundle;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

public class MainActivity extends Activity implements SurfaceHolder.Callback

{  

private SurfaceView surfaceView = null ;

    private SurfaceHolder surfaceHolder = null ;

    private MediaPlayer mp = null ;

    @Override

    public void onCreate(Bundle savedInstanceState) 

    {

        super.onCreate(savedInstanceState);

        surfaceView = new SurfaceView(this);

        surfaceHolder = surfaceView.getHolder(); 

     　surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

        surfaceHolder.addCallback(this);

        setContentView(surfaceView);    

}     

               @Override

               public void surfaceChanged(SurfaceHolder holder, int format,

                            int width, int height) {

                               // TODO Auto-generated method stub                        

               }

               @Override

               public void surfaceCreated(SurfaceHolder holder) {

                               // TODO Auto-generated method stub

        　　　　mp = new MediaPlayer();       

       　　　　 mp.setAudioStreamType(AudioManager.STREAM_MUSIC);

        　　　　mp.setDisplay(surfaceHolder);

        　　　　try {

mp.setDataSource("http://124.163.222.143/fcs112.56.com/flvdownload/27/20/139347377958hd.flv.mp4?t=xi6W14l-V4Fd3NidKvHj6g&r=65728&e=1400281981&v=1&s=1&tt=60&sz=2327933&vid=107657129");

        } catch (Exception e) {

            // TODO Auto-generated catch block

            e.printStackTrace()

        }

        try {

            mp. prepareAsync ();

        } catch (Exception e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

              mp.setOnPreparedListener(new OnPreparedListener() {

                            @Override

                            public void onPrepared(MediaPlayer mp) {

                                   mp.start();

                            }

                              });

               }

               public void surfaceDestroyed(SurfaceHolder holder) {

               }

}