我正在申请将任何视频文件转换为mp3，我选择要转换的文件，当我开始转换时，会显示此错误
Failed to instantiate [ch.qos.logback.classic.LoggerContext]
但是，我添加了外部jar文件：
的logback经典-0.9.jar 的logback核-0.9.jar slf4j.jar xuggle-xuggler.jar-3.0.660.jar
这是全班文件
package javaProject;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import com.xuggle.mediatool.IMediaReader;
import com.xuggle.mediatool.IMediaWriter;
import com.xuggle.mediatool.ToolFactory;
import com.xuggle.xuggler.ICodec;
public class Converter {
static Object a=null;
public static void main(String[] aa)
{
final JFrame mainframe=new JFrame("Video To Mp3 Converter");
mainframe.setResizable(true);
JPanel panel=new JPanel();
panel.setLayout(null);
panel.setBackground(Color.white);
mainframe.add(panel);
//debug.put("You chose to open this file: " + chooser.getSelectedFile().getAbsolutePath());
/* ****************************** MENU BAR STARTS HERE ************************** */
JMenuBar menu=new JMenuBar();
mainframe.setJMenuBar(menu);
// file menu starts
JMenu file=new JMenu("File");
file.addSeparator();
menu.add(file);
JMenuItem addfiles= new JMenuItem("Open");
file.add(addfiles);
JMenuItem save=new JMenuItem("Save");
file.add(save);
JMenuItem play=new JMenuItem("Play");
file.add(play);
JMenuItem pause=new JMenuItem("Pause");
file.add(pause);
JMenuItem exit= new JMenuItem("Exit");
file.add(exit);
// edit menu
JMenu edit= new JMenu("Edit");
edit.addSeparator();
menu.add(edit);
JMenuItem paste=new JMenuItem("Paste");
edit.add(paste);
JMenuItem remove=new JMenuItem("Remove");
edit.add(remove);
JMenuItem removeall=new JMenuItem("Remove All");
edit.add(removeall);
// convert menu
JMenu convert=new JMenu ("Convert");
menu.add(convert);
// help menu
JMenu help=new JMenu ("Help");
help.addSeparator();
menu.add(help);
JMenuItem supportedformats=new JMenuItem("Supported Formats");
help.add(supportedformats);
JMenuItem version=new JMenuItem("Version");
help.add(version);
JMenuItem aboutus=new JMenuItem("About Us");
help.add(aboutus);
JMenuItem updates=new JMenuItem("Check For Updates");
help.add(updates);
/* ************************** MENU BAR ENDS HERE ***************** */
/* ********************** MAIN BODY ************************* */
JLabel browsefiles=new JLabel("Browse Files");
browsefiles.setBounds(50, 150, 150, 25);
panel.add(browsefiles);
final JTextField field1=new JTextField (300);
field1.setBounds(150, 150, 300, 25);
panel.add(field1);
JButton browse=new JButton("Browse Files");
browse.setBounds(470, 150, 150, 25);
panel.add(browse);
final JButton start=new JButton("Start Converting");
start.setBounds(170, 200, 150, 25);
panel.add(start);
JButton pausebutton=new JButton("Pause");
pausebutton.setBounds(340, 200, 100, 25);
panel.add(pausebutton);
browse.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{ JFileChooser chooser=new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter("VIDEO FILES", new
String[] {"mp4","FLV"});
chooser.setFileFilter(filter);
if (chooser.showOpenDialog(mainframe) == JFileChooser.APPROVE_OPTION)
{
field1.setText(chooser.getSelectedFile().getName());
}
// JOptionPane.showMessageDialog(null, "This Item Received from file chooser: "+
chooser.getSelectedFile());
start.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
IMediaReader reader = ToolFactory.makeReader("chooser.getSelectedFile()");
IMediaWriter writer = ToolFactory.makeWriter("E:/output.mp3", reader);
int sampleRate = 44100;
int channels = 1;
writer.addAudioStream(0, 0, ICodec.ID.CODEC_ID_MP3, channels, sampleRate);
while (reader.readPacket() == null);
}});
}
});
JButton playbutton=new JButton("PLAY");
playbutton.setBounds(170, 230, 270, 25);
panel.add(playbutton);
/* ********************* MAIN BODY ENDS HERE ************* */
/* **************************** MENU BAR ACTIONS HERE ******************* */
addfiles.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{ JFileChooser chooser=new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter("VIDEO FILES", new
String[] {"mp4"});
chooser.setFileFilter(filter);
if (chooser.showOpenDialog(mainframe) == JFileChooser.APPROVE_OPTION) {
field1.setText(chooser.getSelectedFile().getName());
}
}
});
exit.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
System.exit(0);
}
});
remove.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
if (field1==a)
{
JOptionPane.showMessageDialog(null, "Add Files First");
}
else
{
field1.setText(null);
}
}
});
removeall.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
if (field1==a)
{
JOptionPane.showMessageDialog(null, "Add Files First");
}
else
{
field1.setText(null);
}
}
});
aboutus.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
AboutUs aboutusobj=new AboutUs();
aboutusobj.aboutus();
}
});
updates.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
Updates updatesobj=new Updates();
updatesobj.checkforupdates();
}
});
/* *************************** MENU BAR ACTIONS END HERE ********************** */
mainframe.setSize(800, 500);
mainframe.setLocationRelativeTo(null);
mainframe.setVisible(true);
}
}
这是我添加了actionlistener以将视频转换为mp3的应用程序部分
browse.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{ JFileChooser chooser=new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter("VIDEO FILES", new
String[] {"mp4","FLV"});
chooser.setFileFilter(filter);
if (chooser.showOpenDialog(mainframe) == JFileChooser.APPROVE_OPTION)
{
field1.setText(chooser.getSelectedFile().getName());
}
start.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent arg0)
{
IMediaReader reader = ToolFactory.makeReader("chooser.getSelectedFile()");
IMediaWriter writer = ToolFactory.makeWriter("E:/output.mp3", reader);
int sampleRate = 44100;
int channels = 1;
writer.addAudioStream(0, 0, ICodec.ID.CODEC_ID_MP3, channels, sampleRate);
while (reader.readPacket() == null);
}});
}
});
答案 0 :(得分：1)
Mp3是一个音频容器，而不是一个视频容器。您是否只是尝试从视频中提取音频并将其放入Mp3？