java 调用ffmpeg,取时长,码率与截图

package com.jzero.upload;
  
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
  
import com.jzero.util.MPrint;
import com.jzero.util.MRecord;
  
public class MFFmpeg {
    private String ffmpegPath;
    private static final String FILE_SEPARATOR = File.separator;
    public static MFFmpeg self = new MFFmpeg();
  
    private MFFmpeg() {
    }
  
    public static MFFmpeg me() {
        return self;
    }
  
    public MFFmpeg init(String path) {
        this.ffmpegPath = path;
        return this;
    }
  
    private static boolean isSurpportedType(String type) {
        Pattern pattern = Pattern.compile(
                "(asx|asf|mpg|wmv|3gp|mp4|mov|avi|flv){1}$",
                Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(type);
        return matcher.find();
    }
  
    /**
     *
     * @param sourceFile
     *            将要被转换的目标文件
     * @param desctination
     *            转换之后文件的存放路径 ffmpeg commandLine： ffmpeg -y -i
     *            /usr/local/bin/lh.mp4 -ab 56 -ar 22050 -b 500 -s 320x240
     *            /usr/local/bin/lh.flv
     * @throws IOException
     */
    public MRecord converToFlv(File sourceFile, String destination) {
  
        String fileName = sourceFile.getName();
        String surffix = fileName.substring(fileName.lastIndexOf(".") + 1);
        if (!isSurpportedType(surffix))
            throw new RuntimeException("unsurpported file type " + surffix);
  
        List<String> cmdParam = new LinkedList<String>();
        cmdParam.add(ffmpegPath);
        cmdParam.add("-y");
        cmdParam.add("-i");
        cmdParam.add(sourceFile.getAbsolutePath());
        cmdParam.add("-ab");
        cmdParam.add("56");
        cmdParam.add("-ar");
        cmdParam.add("22050");
        cmdParam.add("-b");
        cmdParam.add("500");
        cmdParam.add("-s");
        cmdParam.add("320*240");
        cmdParam.add(destination + FILE_SEPARATOR
                + fileName.substring(0, fileName.lastIndexOf(".")) + ".flv");
  
        return execCmd(cmdParam);
    }
  
    /**
     *
     * 获取图片的第一帧 ffmpeg commandLine： ffmpeg -y -i /usr/local/bin/lh.3gp -vframes
     * 1 -r 1 -ac 1 -ab 2 -s 320x240 -f image2 /usr/local/bin/lh.jpg
     *
     * @param sourceFile
     *            源文件
     * @param destination
     *            目标文件
     * @param surfix
     *            要保存的图片格式：jpg,jpeg,gif
     * @throws IOException
     * @throws IOException
     */
    public MRecord captureFirstFrame(File sourceFile, String destination) {
        return captureFirstFrame(sourceFile, destination, "jpg");
    }
  
    public MRecord captureFirstFrame(File sourceFile, String destination,
            String surfix) {
        String fileName = sourceFile.getName();
        String surffix = fileName.substring(fileName.lastIndexOf(".") + 1);
        if (!isSurpportedType(surffix))
            throw new RuntimeException("unsurpported file type " + surffix);
  
        List<String> cmd = new LinkedList<String>();
        cmd.add(ffmpegPath);
        cmd.add("-y");
        cmd.add("-i");
        cmd.add(sourceFile.getAbsolutePath());
        cmd.add("-vframes");
        cmd.add("1");
        cmd.add("-r");
        cmd.add("1");
        cmd.add("-ac");
        cmd.add("1");
        cmd.add("-ab");
        cmd.add("2");
        cmd.add("-s");
        cmd.add("56*56");
        cmd.add("-f");
        cmd.add("image2");
        cmd.add(destination + FILE_SEPARATOR
                + fileName.substring(0, fileName.lastIndexOf(".")) + "."
                + surfix);
  
        return execCmd(cmd);
    }
  
    private MRecord execCmd(List<String> cmd) {
        MRecord out = null;
        final ProcessBuilder pb = new ProcessBuilder();
        pb.redirectErrorStream(true);
        pb.command(cmd);
        try {
            final Process p = pb.start();
            InputStream in = p.getInputStream();
            out = pattInfo(in);
            // 开启单独的线程来处理输入和输出流，避免缓冲区满导致线程阻塞.
            try {
                p.waitFor();
            } catch (InterruptedException e) {
                e.printStackTrace();
                Thread.currentThread().interrupt();
            }
            p.getErrorStream().close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return out;
    }
  
    // 负责从返回信息中读取内容
    private String read(InputStream is) {
        BufferedReader br = null;
        StringBuffer sb = new StringBuffer();
        try {
            br = new BufferedReader(new InputStreamReader(is), 500);
  
            String line = "";
            while ((line = br.readLine()) != null) {
                // System.out.println(line);
                sb.append(line);
            }
            br.close();
        } catch (Exception e) {
        } finally {
            try {
                if (br != null)
                    br.close();
            } catch (Exception e) {
            }
        }
        return sb.toString();
    }
  
    // 负责从返回的内容中解析
    /**
     * Input #0, avi, from 'c:\join.avi': Duration: 00:00:10.68(时长), start:
     * 0.000000(开始时间), bitrate: 166 kb/s(码率) Stream #0:0: Video: msrle
     * ([1][0][0][0] / 0x0001)(编码格式), pal8(视频格式), 165x97(分辨率), 33.33 tbr, 33.33
     * tbn, 33.33 tbc Metadata: title : AVI6700.tmp.avi Video #1
     */
    public MRecord pattInfo(InputStream is) {
        String info = read(is);
        MRecord out = new MRecord();
        String regexDuration = "Duration: (.*?), start: (.*?), bitrate: (\\d*) kb\\/s";
        Pattern pattern = Pattern.compile(regexDuration);
        Matcher m = pattern.matcher(info);
        if (m.find()) {
            out.set("timelen", getTimelen(m.group(1))).set("begintime", m.group(2)).set(
                    "kb", m.group(3) + "kb/s");
        }
        return out;
    }
    //格式:"00:00:10.68"
    private int getTimelen(String timelen){
        int min=0;
        String strs[] = timelen.split(":");
        if (strs[0].compareTo("0") > 0) {
            min+=Integer.valueOf(strs[0])*60*60;//秒
        }
        if(strs[1].compareTo("0")>0){
            min+=Integer.valueOf(strs[1])*60;
        }
        if(strs[2].compareTo("0")>0){
            min+=Math.round(Float.valueOf(strs[2]));
        }
        return min;
    }
    public static void main(String[] args) {
        // String ffmpegPath = "c:/ffmpeg.exe";
        // File file = new File("c:/join.avi");
        // MFFmpeg.me().init(ffmpegPath).captureFirstFrame(file, "c:/", "jpg");
        String t = "00:00:10.68";
        String strs[] = t.split(":");
        int min=0;
        if (strs[0].compareTo("0") > 0) {
            min+=Integer.valueOf(strs[0])*60*60;//秒
        }
        if(strs[1].compareTo("0")>0){
            min+=Integer.valueOf(strs[1])*60;
        }
        if(strs[2].compareTo("0")>0){
            min+=Math.round(Float.valueOf(strs[2]));
        }
        MPrint.print(min);
    }
  
}