import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.EncoderException;
import it.sauronsoftware.jave.MultimediaInfo;

public class VideoDuration {
	public void getVideoDuration(String path) {
		// get all files in specified "path"
		File[] files = new File(path).listFiles();
		
		Encoder encoder = new Encoder();
		MultimediaInfo multimediaInfo;
		
		long totalTime = 0L;
		long duration = 0L;
		
		for (int i = 0; i < files.length; i++) {
			// here, the format of video can be changed, JAVE upports dozens of formats
			if (!files[i].isDirectory() && files[i].toString().endsWith(".avi")) {
				try {
					multimediaInfo = encoder.getInfo(files[i]);
					duration = multimediaInfo.getDuration();
					totalTime += duration;
				} catch (EncoderException e) {
					e.printStackTrace();
				}
			}
		}
		
		// long --> hh:mm: calculate the time manually
		System.out.print(totalTime/(3600*1000) + ":" + totalTime%(3600*1000)/(60*1000) + ":" + totalTime%(3600*1000)%(60*1000)/1000);
		System.out.println("==>Manually");
		
		// set a default TimeZone before using Date, Calendar and SimpleDateFormat 	
		TimeZone.setDefault(TimeZone.getTimeZone("GMT+00:00")); // January 1, 1970, 00:00:00 GMT(can be found in Date.class)
		
		// long --> hh:mm:ss by means of java.util.Date
		Date date = new Date(totalTime);		
		System.out.print(date.getHours() + ":" + date.getMinutes() + ":" + date.getSeconds());
		System.out.println("==>By Date");
		
		// long --> hh:mm:ss by means of java.util.Calendar, Date
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		System.out.print(calendar.get(Calendar.HOUR_OF_DAY) + ":" + calendar.get(Calendar.MINUTE) + ":" + calendar.get(Calendar.SECOND));
		System.out.println("==>By Calendar");
		
		// long --> hh:mm:ss by means of java.text.SimpleDateFormat, java.util.Date
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:mm:ss");
		System.out.print(simpleDateFormat.format(date));
		System.out.println("==>By SimpleDateFormat");
	}
	public static void main(String[] args) {
		String filePath	= "E:\\BaiduYunDownload\\MySQL";
		
		VideoDuration videoDuration = new VideoDuration();		
		videoDuration.getVideoDuration(filePath);
	}
}