Java使用ffmpeg和mencoder实现视频转码

public class Contants {
 public static final String ffmpegpath = "D:\\DevTools\\ffmpeg\\bin\\ffmpeg.exe";//ffmpeg的安装位置
 public static final String mencoderpath = "D:\\DevTools\\mencoder\\"; // mencoder的目录
 
 public static final String videofolder = "D:\\tools\\video\\"; // 需要被转换格式的视频目录
 public static final String targetfolder = "D:\\tools\\target\\"; // 转换后视频的目录
 
 public static final String videoRealPath = "D:\\tools\\target\\"; // 需要被截图的视频目录;
 public static final String imageRealPath = "D:\\tools\\imgs\\"; // 截图的存放目录
}

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;
 
import com.wdy.common.Contants;
 
public class ConverVideoUtils {
 private Date dt;
 private long begintime;
 private String sourceVideoPath;//源视频路径
 private String filerealname; // 文件名 不包括扩展名
 private String filename; // 包括扩展名
 private String videofolder = Contants.videofolder; // 别的格式视频的目录
 private String targetfolder = Contants.targetfolder; // flv视频的目录
 private String ffmpegpath = Contants.ffmpegpath; // ffmpeg.exe的目录
 private String mencoderpath = Contants.mencoderpath; // mencoder的目录
 private String imageRealPath = Contants.imageRealPath; // 截图的存放目录
 
 public ConverVideoUtils() {
 }
 
 public ConverVideoUtils(String path) {
 sourceVideoPath = path;
 }
 
 public String getPATH() {
 return sourceVideoPath;
 }
 
 public void setPATH(String path) {
 sourceVideoPath = path;
 }
 
 /**
 * 转换视频格式
 * @param String targetExtension 目标视频扩展名 .xxx 
 * @param isDelSourseFile 转换完成后是否删除源文件
 * @return
 */
 public boolean beginConver(String targetExtension, boolean isDelSourseFile) {
 File fi = new File(sourceVideoPath);
 filename = fi.getName();
 filerealname = filename.substring(0, filename.lastIndexOf(".")).toLowerCase();
 System.out.println("----接收到文件(" + sourceVideoPath + ")需要转换-------------------------- ");
 if (!checkfile(sourceVideoPath)) {
 System.out.println(sourceVideoPath + "文件不存在" + " ");
 return false;
 }
 dt = new Date();
 begintime = dt.getTime();
 System.out.println("----开始转文件(" + sourceVideoPath + ")-------------------------- ");
 if (process(targetExtension,isDelSourseFile)) {
 Date dt2 = new Date();
 System.out.println("转换成功 ");
 long endtime = dt2.getTime();
 long timecha = (endtime - begintime);
 String totaltime = sumTime(timecha);
 System.out.println("转换视频格式共用了:" + totaltime + " ");
 if (processImg(sourceVideoPath)) {
 System.out.println("截图成功了！ ");
 } else {
 System.out.println("截图失败了！ ");
 }
 if (isDelSourseFile) {
 deleteFile(sourceVideoPath);
 }
 sourceVideoPath = null;
 return true;
 } else {
 sourceVideoPath = null;
 return false;
 }
 }
 
 /**
 * 对视频进行截图
 * @param sourceVideoPath 需要被截图的视频路径（包含文件名和扩展名）
 * @return
 */
 public boolean processImg(String sourceVideoPath) {
 if (!checkfile(sourceVideoPath)) {
 System.out.println(sourceVideoPath + " is not file");
 return false;
 }
 File fi = new File(sourceVideoPath);
 filename = fi.getName();
 filerealname = filename.substring(0, filename.lastIndexOf(".")).toLowerCase();
 List commend = new java.util.ArrayList();
 //第一帧： 00:00:01
 //time ffmpeg -ss 00:00:01 -i test1.flv -f image2 -y test1.jpg
 commend.add(ffmpegpath);
// commend.add("-i");
// commend.add(videoRealPath + filerealname + ".flv");
// commend.add("-y");
// commend.add("-f");
// commend.add("image2");
// commend.add("-ss");
// commend.add("38");
// commend.add("-t");
// commend.add("0.001");
// commend.add("-s");
// commend.add("320x240");
 commend.add("-ss");
 commend.add("00:00:01");
 commend.add("-i");
 commend.add(sourceVideoPath);
 commend.add("-f");
 commend.add("image2");
 commend.add("-y");
 commend.add(imageRealPath + filerealname + ".jpg");
 try {
 ProcessBuilder builder = new ProcessBuilder();
 builder.command(commend);
 builder.start();
 return true;
 } catch (Exception e) {
 e.printStackTrace();
 return false;
 }
 }
 
 /**
 * 实际转换视频格式的方法
 * @param targetExtension 目标视频扩展名
 * @param isDelSourseFile 转换完成后是否删除源文件
 * @return
 */
 private boolean process(String targetExtension, boolean isDelSourseFile) {
 int type = checkContentType();
 boolean status = false;
 if (type == 0) {
 //如果type为0用ffmpeg直接转换
 status = processVideoFormat(sourceVideoPath,targetExtension, isDelSourseFile);
 } else if (type == 1) {
 //如果type为1，将其他文件先转换为avi，然后在用ffmpeg转换为指定格式
 String avifilepath = processAVI(type);
 if (avifilepath == null){
 // avi文件没有得到
 return false;
 }else {
 System.out.println("开始转换:");
 status = processVideoFormat(avifilepath,targetExtension, isDelSourseFile);
 }
 }
 return status;
 }
 
 /**
 * 检查文件类型
 * @return
 */
 private int checkContentType() {
 String type = sourceVideoPath.substring(sourceVideoPath.lastIndexOf(".") + 1, sourceVideoPath.length()).toLowerCase();
 // ffmpeg能解析的格式：（asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等）
 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;
 }
 // 对ffmpeg无法解析的文件格式(wmv9，rm，rmvb等),
 // 可以先用别的工具（mencoder）转换为avi(ffmpeg能解析的)格式.
 else if (type.equals("wmv9")) {
 return 1;
 } else if (type.equals("rm")) {
 return 1;
 } else if (type.equals("rmvb")) {
 return 1;
 }
 return 9;
 }
 
 /**
 * 检查文件是否存在
 * @param path
 * @return
 */
 private boolean checkfile(String path) {
 File file = new File(path);
 if (!file.isFile()) {
 return false;
 } else {
 return true;
 }
 }
 
 /**
 * 对ffmpeg无法解析的文件格式(wmv9，rm，rmvb等), 可以先用别的工具（mencoder）转换为avi(ffmpeg能解析的)格式.
 * @param type
 * @return
 */
 private String processAVI(int type) {
 List commend = new java.util.ArrayList();
 commend.add(mencoderpath);
 commend.add(sourceVideoPath);
 commend.add("-oac");
 commend.add("mp3lame");
 commend.add("-lameopts");
 commend.add("preset=64");
 commend.add("-ovc");
 commend.add("xvid");
 commend.add("-xvidencopts");
 commend.add("bitrate=600");
 commend.add("-of");
 commend.add("avi");
 commend.add("-o");
 commend.add(videofolder + filerealname + ".avi");
 // 命令类型：mencoder 1.rmvb -oac mp3lame -lameopts preset=64 -ovc xvid
 // -xvidencopts bitrate=600 -of avi -o rmvb.avi
 try {
 ProcessBuilder builder = new ProcessBuilder();
 builder.command(commend);
 Process p = builder.start();
 doWaitFor(p);
 return videofolder + filerealname + ".avi";
 } catch (Exception e) {
 e.printStackTrace();
 return null;
 }
 }
 
 /**
 * 转换为指定格式
 * ffmpeg能解析的格式：（asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等）
 * @param oldfilepath
 * @param targetExtension 目标格式扩展名 .xxx
 * @param isDelSourseFile 转换完成后是否删除源文件
 * @return
 */
 private boolean processVideoFormat(String oldfilepath, String targetExtension, boolean isDelSourceFile) {
 if (!checkfile(sourceVideoPath)) {
 System.out.println(oldfilepath + " is not file");
 return false;
 }
 //ffmpeg -i FILE_NAME.flv -ar 22050 NEW_FILE_NAME.mp4
 List commend = new java.util.ArrayList<>();
 commend.add(ffmpegpath);
 commend.add("-i");
 commend.add(oldfilepath);
 commend.add("-ar");
 commend.add("22050");
 commend.add(targetfolder + filerealname + targetExtension);
 try {
 ProcessBuilder builder = new ProcessBuilder();
 String cmd = commend.toString();
 builder.command(commend);
 Process p = builder.start();
 doWaitFor(p);
 p.destroy();
 //转换完成后删除源文件
// if (isDelSourceFile) {
// deleteFile(sourceVideoPath);
// }
 return true;
 } catch (Exception e) {
 e.printStackTrace();
 return false;
 }
 }
 
 /**
 * ffmpeg能解析的格式：（asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等）
 * @param oldfilepath
 * @return
 */
 private boolean processFLV(String oldfilepath) {
 if (!checkfile(sourceVideoPath)) {
 System.out.println(oldfilepath + " is not file");
 return false;
 }
 List commend = new java.util.ArrayList<>();
 commend.add(ffmpegpath);
 commend.add("-i");
 commend.add(oldfilepath);
 commend.add("-ab");
 commend.add("64");
 commend.add("-acodec");
 commend.add("mp3");
 commend.add("-ac");
 commend.add("2");
 commend.add("-ar");
 commend.add("22050");
 commend.add("-b");
 commend.add("230");
 commend.add("-r");
 commend.add("24");
 commend.add("-y");
 commend.add(targetfolder + filerealname + ".flv");
 try {
 ProcessBuilder builder = new ProcessBuilder();
 String cmd = commend.toString();
 builder.command(commend);
 Process p = builder.start();
 doWaitFor(p);
 p.destroy();
 deleteFile(oldfilepath);
 return true;
 } catch (Exception e) {
 e.printStackTrace();
 return false;
 }
 }
 
 public int doWaitFor(Process p) {
 InputStream in = null;
 InputStream err = null;
 int exitValue = -1; // returned to caller when p is finished
 try {
 System.out.println("comeing");
 in = p.getInputStream();
 err = p.getErrorStream();
 boolean finished = false; // Set to true when p is finished
 
 while (!finished) {
 try {
  while (in.available() > 0) {
  Character c = new Character((char) in.read());
  System.out.print(c);
  }
  while (err.available() > 0) {
  Character c = new Character((char) err.read());
  System.out.print(c);
  }
 
  exitValue = p.exitValue();
  finished = true;
 
 } catch (IllegalThreadStateException e) {
  Thread.currentThread().sleep(500);
 }
 }
 } catch (Exception e) {
 System.err.println("doWaitFor();: unexpected exception - " + e.getMessage());
 } finally {
 try {
 if (in != null) {
  in.close();
 }
 
 } catch (IOException e) {
 System.out.println(e.getMessage());
 }
 if (err != null) {
 try {
  err.close();
 } catch (IOException e) {
  System.out.println(e.getMessage());
 }
 }
 }
 return exitValue;
 }

public class ConverVideoTest {
 public void run() {
  try {
   // 转换并截图
   String filePath = "C:\\Users\\wangdy\\Desktop\\pics\\05.尚硅谷_SVN_启动服务器.wmv";
   ConverVideoUtils cv = new ConverVideoUtils(filePath);
   String targetExtension = ".mp4";
   boolean isDelSourseFile = true;
   boolean beginConver = cv.beginConver(targetExtension,isDelSourseFile);
   System.out.println(beginConver);
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
 
 public static void main(String args[]) {
  ConverVideoTest c = new ConverVideoTest();
  c.run();
 }
}