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jmf 動画再生がアプレットなら出来るが、アプリケーションではダメ

1
投稿者投稿内容
れぶ
会議室デビュー日: 2004/03/02
投稿数: 2
投稿日時: 2004-03-02 15:24
jmfを使って、動画再生機能をチェックしています。
sunのホームページのサンプルアプレットでは、動画再生に成功しますが、
アプリケーションのサンプルでは、以下のエラーが出ます。
「Error: Unable to realize com.sun.media.amovie.AMController@80d1ff」
なお、幾つかのサンプルソースを拾ってきて試しましたが、上記と同じエラーになります。
どなたか、解る人おられませんか？

以下長くなりますが、ソースを示します。

//JMFPlayer.java ---------------------------------------------------------

import java.awt.*;
import java.awt.event.*;
import java.net.*;

import javax.media.*;
import javax.swing.*;

/**
This is a simple generic media player it can be constructed with a URL
format string and loads an appropriate player.
*/
public class JMFPlayer extends JFrame
implements ControllerListener
{
Player player = null;

/**
Constructs a player to render the media stream which is read from the
specified source.

@param mediaSource The source from which to read the media data in a
form suitable for construction of a URL.
*/
public JMFPlayer(String mediaSource)
{
Container content = getContentPane();
content.setLayout(new BorderLayout());
setTitle("JMFPlayer: " + mediaSource);

try {
URL mediaURL = new URL(mediaSource);
player = Manager.createPlayer(mediaURL);
player.addControllerListener(this);
}
catch (Exception e) {
e.printStackTrace();
}

// Layout the window at an initial size and make visible
content.add(createControls(), BorderLayout.NORTH);
setSize(300, 150);
validate();
setVisible(true);

// Trap the window close button as synonymous with the "Exit" button
addWindowListener(
new WindowAdapter() {
public void windowClosing(WindowEvent event) {
destroyPlayer();
System.exit(0);
}
}
);
}

//////////////////////////////////////////////////////////////////////////

/**
Creates a control panel and connects the "Start", "Stop" and "Exit"
buttons to the appropriate callback handler methods.
*/
public JPanel createControls()
{
JPanel panel = new JPanel(new FlowLayout());
JButton start = new JButton("Start");
start.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
startPlayer();
}
}
);
panel.add(start);

JButton stop = new JButton("Stop");
stop.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
stopPlayer();
}
}
);
panel.add(stop);

JButton exit = new JButton("Exit");
exit.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent event) {
destroyPlayer();
System.exit(0);
}
}
);
panel.add(exit);

return panel;
}

//////////////////////////////////////////////////////////////////////////

/**
This callback handler function starts the player playing as soon as
possible.
*/
public void startPlayer()
{
player.start();
}

//////////////////////////////////////////////////////////////////////////

/**
This callback handler function not only stops the player playing but
also instructs it to free any memory (and other) resources that it might
have allocated. This is the sort of suspension suitable for an applet
that has been scrolled out of view.<P>

The player can still be restarted by a subsequent call to startPlayer()
but may take a little longer to restart since it must reinitialise any
resource which it uses.
*/
public void stopPlayer()
{
player.stop();
player.deallocate();
}

//////////////////////////////////////////////////////////////////////////

/**
Closes down a player in preparation for shutdown of this application.
*/
public void destroyPlayer()
{
player.close();
}

//////////////////////////////////////////////////////////////////////////

/**
This method listens for events generated by the player during
operation. It only handles "RealizeCompleteEvent" events but is able
to report other types.
*/
public synchronized void controllerUpdate(ControllerEvent event)
{
if (event instanceof RealizeCompleteEvent) {
Container content = getContentPane();

Component comp = player.getVisualComponent();
if (comp != null)
content.add(comp, BorderLayout.CENTER);

comp = player.getControlPanelComponent();
if (comp != null)
content.add(comp, BorderLayout.SOUTH);

// Adjust the windows size to reflect the newly added visual and
// control components
setSize(content.getPreferredSize());
validate();
}

//System.out.println(event);
}

//////////////////////////////////////////////////////////////////////////

/**
Create a separate player window for each of the command line
arguments.
*/
public static void main(String[] args)
{
for (int i = 0; i < args.length; i++)
new JMFPlayer(args[i]);
}
}
れぶ
会議室デビュー日: 2004/03/02
投稿数: 2
投稿日時: 2004-03-02 17:27
すいません。半自己解決しました。
http://cappuccino.jp/keisuken/java/jmf.html
のサンプルソースでは、アプリケーションでも動画再生できました。
原因はまだ良く解りませんが、これから調べてみます。
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