有关流媒体播放

2010-05-12 11:23:21 141 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

RTSP流媒体播放问题总结什么是rtsp? RTSP（Real Time Streaming Protocol）是由Real Network和Netscape共同提出的如何有效地在IP网络上传输流媒体数据的应用层协议。RTSP对流媒体提供了诸如暂停，快进等控制，而它本身并不传输数据，RTSP的作用相当于流媒体服务器的远程控制。服务器端可以自行选择使用TCP或UDP来传送串流内容，它的语法和运作跟HTTP 1.1类似，但并阅读详情

最近在做一个流媒体播放的东西，Darwin Streaming Server已经弄好了，运行的时候可以看到RTP数据包的传送，可是不能在WTK模拟播放出来，为什么？
这是一部分代码：

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;

public class StreamingVideo extends MIDlet implements CommandListener, PlayerListener, Runnable{

private Display myDisplay;
private Form myForm;

private Thread streamingThread;
private Player myPlayer;
private VideoControl vc;
private boolean running=false;

public StreamingVideo() {
myDisplay = Display.getDisplay(this);
myForm=new Form ("Streaming Test");
myForm.addCommand(new Command("Exit", Command.EXIT,0));
myForm.addCommand(new Command("Start", Command.OK,0));
myForm.setCommandListener(this);
}

protected void startApp() throws MIDletStateChangeException {
myDisplay.setCurrent(myForm);
streamingThread = new Thread(this);
}

protected void pauseApp() {}

protected void destroyApp(boolean unconditional) {
try {
myPlayer.stop();
myPlayer.close();
}
catch( Exception e ) {
log("Exception: " + e.toString());
}
}

/**
* Inits and starts the Player for Video Streaming
*/
private void startStreaming(){
try{
myPlayer = Manager.createPlayer("rtsp://localhost：554/sample_100kbit.mov");
myPlayer.addPlayerListener(this);
myPlayer.realize();
// Grab the video control and set it to the current display.
vc = (VideoControl)myPlayer.getControl("VideoControl");
if (vc != null) {
myForm.append((Item)vc.initDisplayMode(vc.USE_GUI_PRIMITIVE, null));
// sets the display size of the video.
vc.setDisplaySize(120,160);
}
myPlayer.start();

}catch(Exception e){
log("Exception: " + e.toString());
myForm.append("Exception: " + e.toString());
}

}

public void commandAction(Command c, Displayable s){
if(c.getCommandType()==Command.EXIT){
running=false;
notifyDestroyed();
}else{
streamingThread.start();
}
}

/**
* PlayerListener Interface method, logs all player event.
*/
public void playerUpdate(Player player, String event, Object eventData){
log(" ** playerUpdate: " + event + " **");

}

public void log(String msg){
System.out.println(msg);
}

public void run() {
running=true;
startStreaming();
while(running){
Thread.yield();
}
}
}
一直提示不能为rtsp://localhost：554/sample_100kbit.mov创建Player
高手指点一下，谢谢

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