我试图将桌面部分流式传输到我的Android设备。
我通过VLC媒体播放器创建流。我用2048 Kb /秒和30 fps构建H.264流,将其打包到mp4 / mov容器中并按如下方式发布:rtsp:// [my-ip]:[port] / stream。重要的是,我不想简单地从媒体服务器流式传输文件,但我希望通过具有属性的流来实现我的桌面的实时翻译,如上所述。
根据此处的Android文档http://developer.android.com/guide/appendix/media-formats.html,必须可以在Android设备上通过RTSP流消费H.264视频(我的设备在4.2上运行)。
但是我的VideoView小部件说未找到视频,而我可以通过此处安装的VLC播放器实际看到来自另一台PC的流。那么我怎样才能达到我的初步目标呢?
这是我的Android应用程序代码:
main_layout.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<VideoView
android:id="@+id/videoRectangle"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="100dp" />
<Button
android:id="@+id/connectToVideoServerButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/videoRectangle"
android:layout_alignParentBottom="true"
android:layout_marginBottom="10dp"
android:text="Присоединиться" />
<EditText
android:id="@+id/streamServerAddress"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignBaseline="@+id/connectToVideoServerButton"
android:layout_alignBottom="@+id/connectToVideoServerButton"
android:layout_marginLeft="30dp"
android:layout_toRightOf="@+id/connectToVideoServerButton"
android:ems="10"
android:hint=""
android:text="" >
<requestFocus />
</EditText>
</RelativeLayout>
MainActivity.java:
package com.example.videostreamerclient;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.VideoView;
public class MainActivity extends Activity {
private VideoView videoView;
private Button videoServerConnectBtn;
private EditText streamServerAddress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
videoView = (VideoView) findViewById(R.id.videoRectangle);
streamServerAddress = (EditText) findViewById(R.id.streamServerAddress);
videoServerConnectBtn = (Button) findViewById(R.id.connectToVideoServerButton);
videoServerConnectBtn.setOnClickListener(videoServerConnectBtnClicked);
}
private View.OnClickListener videoServerConnectBtnClicked = new View.OnClickListener() {
@Override
public void onClick(View v){
if ( streamServerAddress.getText().toString() != "" )
{
videoView.setVideoPath( streamServerAddress.getText().toString() );
videoView.start();
}
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}