统计指定目录下的视频时长

有时间可以写成递归的

package org.zln.video.demo1;

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

import java.io.File;

/**
 * 统计目录下视频时长
 * Created by coolkid on 2015/6/13 0013.
 */
public class CountTime {
    /*支持的后缀*/
    private static final String[] SUFFIX_SUPPORT = {".avi",".mp4"};

    public static void main(String[] args) throws EncoderException {
        if (args.length!=1){
            throw new RuntimeException("参数错误");
        }
        File file = new File(args[0]);
        long ls = getLongTime(file);
        long hour = ls/3600000;
        long min = (ls - hour*3600000)/60000;
        long sec = (ls - hour*3600000 - min*60000)/1000;
        System.out.println("视频时长："+hour+"时："+min+"分："+sec+"秒");

    }

    public static long getLongTime(File root) throws EncoderException {
        long t = 0;
        File[] files = root.listFiles();
        for (File file:files){
            if (file.getName().endsWith(".mp4")){
                Encoder encoder = new Encoder();
                MultimediaInfo multimediaInfo = encoder.getInfo(file);
                t += multimediaInfo.getDuration();
            }
        }
        return t;
    }
}

这里用到了jave.jar

---

将上述代码进行优化，实现了统计指定目录下，及其子目录下的 avi，mp4格式文件的视频总时长的统计

package org.zln.video.demo1;

import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.EncoderException;
import it.sauronsoftware.jave.MultimediaInfo;
import org.apache.log4j.Logger;

import java.io.File;

/**
 * 统计目录下视频时长
 * Created by coolkid on 2015/6/13 0013.
 */
public class CountTime {
    /*支持的后缀*/
    private static final String[] SUFFIX_SUPPORT = {".avi",".mp4"};

    private static Logger logger = Logger.getLogger(CountTime.class);

    private static long countTime = 0;

    public static void main(String[] args) throws EncoderException {
        if (args.length!=1){
            throw new RuntimeException("参数错误");
        }
        File file = new File(args[0]);
        long ls = traverseFileGetLongTime(file);
        long hour = ls/3600000;
        long min = (ls - hour*3600000)/60000;
        long sec = (ls - hour*3600000 - min*60000)/1000;
        System.out.println("视频时长："+hour+"时："+min+"分："+sec+"秒");

    }

    private static long traverseFileGetLongTime(File rootFile) throws EncoderException {
        if (rootFile.isDirectory()){
            File[] files = rootFile.listFiles();
            for (File file:files){
                traverseFileGetLongTime(file);
            }
        }else {
            if (isVideo(rootFile)){
                countTime += getLongTime(rootFile);
            }

        }
        return countTime;
    }

    /**
     * 是否是视频文件
     * @param rootFile 文件
     * @return 是否是视频文件
     */
    private static boolean isVideo(File rootFile) {
        String name = rootFile.getName();
        for (int i = 0; i < SUFFIX_SUPPORT.length; i++) {
            if (SUFFIX_SUPPORT[i].equalsIgnoreCase(name.substring(name.lastIndexOf(".")))){
                logger.debug("视频文件："+rootFile.getAbsolutePath());
                return true;
            }
        }
        return false;
    }

    /**
     * 统计视频文件时长
     * @param root
     * @return
     * @throws EncoderException
     */
    public static long getLongTime(File root) throws EncoderException {
        long t = 0;
        Encoder encoder = new Encoder();
        MultimediaInfo multimediaInfo = encoder.getInfo(root);
        t += multimediaInfo.getDuration();
        return t;
    }
}

---

继续修改：上述代码存在一个bug，就是当遍历到无后缀名的文件时，会抛出异常

package org.zln.video.demo1;

import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.EncoderException;
import it.sauronsoftware.jave.MultimediaInfo;
import org.apache.log4j.Logger;

import java.io.File;

/**
 * 统计目录下视频时长
 * Created by coolkid on 2015/6/13 0013.
 */
public class CountTime {
    /*支持的后缀*/
    private static final String[] SUFFIX_SUPPORT = {".avi",".mp4"};

    private static Logger logger = Logger.getLogger(CountTime.class);

    private static long countTime = 0;

    public static void main(String[] args) throws EncoderException {
        if (args.length!=1){
            throw new RuntimeException("参数错误");
        }
        File file = new File(args[0]);
        long ls = traverseFileGetLongTime(file);
        long hour = ls/3600000;
        long min = (ls - hour*3600000)/60000;
        long sec = (ls - hour*3600000 - min*60000)/1000;
        System.out.println("视频时长："+hour+"时："+min+"分："+sec+"秒");

    }

    private static long traverseFileGetLongTime(File rootFile) throws EncoderException {
        if (rootFile.isDirectory()){
            File[] files = rootFile.listFiles();
            for (File file:files){
                traverseFileGetLongTime(file);
            }
        }else {
            if (isVideo(rootFile)){
                countTime += getLongTime(rootFile);
            }

        }
        return countTime;
    }

    /**
     * 是否是视频文件
     * @param rootFile 文件
     * @return 是否是视频文件
     */
    private static boolean isVideo(File rootFile) {
        String name = rootFile.getName();
        for (int i = 0; i < SUFFIX_SUPPORT.length; i++) {
            if (name.toLowerCase().endsWith(SUFFIX_SUPPORT[i])){
                logger.debug("视频文件："+rootFile.getAbsolutePath());
                return true;
            }
        }
        return false;
    }

    /**
     * 统计视频文件时长
     * @param root
     * @return
     * @throws EncoderException
     */
    public static long getLongTime(File root) throws EncoderException {
        long t = 0;
        Encoder encoder = new Encoder();
        MultimediaInfo multimediaInfo = encoder.getInfo(root);
        t += multimediaInfo.getDuration();
        return t;
    }
}

另一种用法

[完整代码](https://gitee.com/sherryBy/test-java/tree/master/demo/java-video)