3GP視頻轉換器代碼

我做的視頻格式轉換器,只能轉換3gp格式.代碼如下:

import java.io.File;
import java.awt.event.*;
import java.util.List;
import javax.swing.*;
import javax.swing.filechooser.*;
import java.awt.*;

public class ConvertVideo extends JFrame
{
JButton button1;
JButton button2;
JButton button3;
JFileChooser chooser;
ProcessBuilder builder;
String oldFileName;
String newFileName;
JLabel label3;

public ConvertVideo()
{
setTitle("視頻格式轉換器");
setSize(600,70);

JPanel panel=new JPanel();
JLabel label1=new JLabel("轉換文件路徑:");

chooser=new JFileChooser();

button1=new JButton("添加轉換文件");
button1.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
chooser.setCurrentDirectory(new File("."));

int result=chooser.showOpenDialog(ConvertVideo.this);

if (result==JFileChooser.APPROVE_OPTION)
{
String name=chooser.getSelectedFile().getPath();
oldFileName=name;
}

}
});

JLabel label2=new JLabel("轉換後文件路徑:");
button2=new JButton("創建轉換文件路徑");
button2.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);

int result=chooser.showSaveDialog(ConvertVideo.this);

if (result==JFileChooser.APPROVE_OPTION)
{
newFileName=chooser.getSelectedFile().getPath();
}

}
});

button3=new JButton("開始轉換");
button3.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
check();
}
});

label3=new JLabel();

JPanel panel2=new JPanel();

panel2.add(label3);

panel.add(label1);
panel.add(button1);
panel.add(label2);
panel.add(button2);
panel.add(button3);

add(panel,BorderLayout.NORTH);
add(panel2,BorderLayout.SOUTH);
}

public static void main(String args[])
{
ConvertVideo c=new ConvertVideo();
c.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
c.setVisible(true);
}

public void check()
{

if (!checkfile(oldFileName))
{
System.out.println(oldFileName+"沒有此文件");
}

if (process(oldFileName,newFileName))
{
System.out.println("文件轉換成功!");
label3.setText("文件轉換成功!");
}

}

private boolean process(String oldFileName,String newFileName)
{

int type = checkContentType(oldFileName);

boolean status=false;
if (type==0)
{
status=process3GP(oldFileName,newFileName);
}

return status;
}

private int checkContentType(String oldFileName)
{
String type=oldFileName.substring(oldFileName.lastIndexOf(".")+1,oldFileName.length()).toLowerCase();

System.out.println(type);

if (type.equals("avi"))
{
return 0;
}
else if (type.equals("mpg"))
{
return 0;
}
else if (type.equals("wmv")) {
return 0;
}
else if (type.equals("3gp"))
{
return 0;
}
else if (type.equals("mov"))
{
return 0;
}
else if (type.equals("mp4"))
{
return 0;
}
else if (type.equals("asf"))
{
return 0;
}
else if (type.equals("asx"))
{
return 0;
}
else if (type.equals("flv"))
{
return 0;
}

return 9;
}

private boolean checkfile(String path)
{
File file=new File(path);
if (!file.isFile())
{
return false;
}

return true;
}

private boolean process3GP(String oldfilepath,String newfilepath)
{

if (!checkfile(oldfilepath))
{
System.out.println(oldfilepath+"沒有發現此文件");
return false;
}

List<String> commend=new java.util.ArrayList<String>();
commend.add("e:/ffmpeg");
commend.add("-i");
commend.add(oldfilepath);
commend.add("-ar");
commend.add("8000");
commend.add("-ac");
commend.add("1");
commend.add("-s");
commend.add("176*144");
commend.add("-r");
commend.add("12");
commend.add("-b");
commend.add("250");
commend.add("-ab");
commend.add("12");
commend.add(newfilepath);

try {
builder = new ProcessBuilder();
builder.command(commend);
System.out.println("正在轉換格式中...");
label3.setText("正在轉換格式中...");
builder.start();

return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}

}

}