手机实时传输的视频不能播放

class Send implements Runnable {
Socket socket = null;
OutputStream os = null;
File file = null;
FileInputStream fis = null;
byte[] bytes;
boolean flag = true;
DataOutputStream dos=null;
Send(File file) {
this.file = file;
}

public void connect() {
    try {
        socket = new Socket("192.168.1.100", 9991);
        os = socket.getOutputStream();
        dos = new DataOutputStream(os);
        fis=   new FileInputStream(file);
        String a = file.getAbsolutePath();


    } catch (IOException e) {
    }
    bytes = new byte[1024];
    int length=0;
    try {
        while(true&flag){
            while ((length = fis.read(bytes, 0, bytes.length))> 0) {
                dos.write(bytes, 0, length);
                dos.flush();
            }
            try {
                new Thread().sleep(1);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    finally{
        if(fis!=null){
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if(dos!=null){
            try {
                dos.flush();
                dos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

        }
    }
}

public void run() {
    connect();
}

}
上面的是android端的程序这个就是实时传输视频的程序，但是传输到PC端的视频无法播放，请问哪一位大神能给我解决一下，很急

下面的是PC端服务器接受视频的数据
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;

public class bbbb{
public static void main(String[] args){
try {
ServerSocket ss=new ServerSocket(9991);
Socket socket=ss.accept();
System.out.print("hh");
new Thread(new oo(socket)).start();
} catch (IOException e) {
e.printStackTrace();
}
}
}

class oo implements Runnable{
int length;
Socket socket;
DataInputStream dis;
FileOutputStream fos;
oo(Socket socket){
this.socket=socket;
}
public void run() {
try {
dis=new DataInputStream(socket.getInputStream());
fos=new FileOutputStream(new File("C:/Users/lenovo/Desktop/gg1/a.mp4"));
byte[] bytes=new byte[1024];

        while((length=dis.read(bytes,0,bytes.length))>0){
            fos.write(bytes, 0, length);
            fos.flush();
            try {
                new Thread().sleep(1);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }



    } catch (IOException e) {
        e.printStackTrace();
    }
    finally{
        if(fos!=null){      
            try {
                fos.flush();
                fos.close();
                System.out.print("接收完毕！");
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

}

首先检查下网络连接，用抓包工具看下