使用Java和ffmpeg把音频和视频合成视频的操作方法

package com.lovely.test;

import java.io.BufferedReader;
import java.io.File;
//import java.io.FileInputStream;
//import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;
/**
 * 
 * 视频中获取音频文件
 * 
 */
public class TestFfmpeg {
 // FFmpeg全路径
 private static final String FFMPEG_PATH = "D:\\softWare\\tools\\joyTool\\ffmpeg\\bin\\ffmpeg.exe";
 public static void main(String[] args) {
 
 String path = "E:\\StudyVedio\\ComputerScience\\US";
 try {
 getAll(path);
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
 /**
 * 具体合成视频函数
 * @param videoInputPath
 *   原视频的全路径
 * 
 * @param audioInputPath
 *   音频的全路径
 * 
 * @param videoOutPath
 *   视频与音频结合之后的视频的路径
 */
 public static void convetor(String videoInputPath, String audioInputPath, String videoOutPath)
 throws Exception {
 Process process = null;
 InputStream errorStream = null;
 InputStreamReader inputStreamReader = null;
 BufferedReader br = null;
 try {
 // ffmpeg命令
 String command = FFMPEG_PATH + " -i " + videoInputPath + " -i " + audioInputPath
  + " -c:v copy -c:a aac -strict experimental " +
  " -map 0:v:0 -map 1:a:0 "
  + " -y " + videoOutPath;
 
 process = Runtime.getRuntime().exec(command);
 errorStream = process.getErrorStream();
 inputStreamReader = new InputStreamReader(errorStream);
 br = new BufferedReader(inputStreamReader);
 // 用来收集错误信息的
 String str = "";
 while ((str = br.readLine()) != null) {
 System.out.println(str);
 }
 process.waitFor();
 } catch (IOException e) {
 e.printStackTrace();
 } finally {
 if (br != null) {
 br.close();
 }
 if (inputStreamReader != null) {
 inputStreamReader.close();
 }
 if (errorStream != null) {
 errorStream.close();
 }
 }
 }
 // 递归函数
 public static void getAll(String path) throws Exception {
 String videoInputPath = "";
 String audioInputPath = "";
 String videoOutPath = "";
 
 File file = new File(path); 
 if (file.isDirectory()) {
 File[] files = file.listFiles();
 for (File f : files) {
 getAll(f.getPath());
 if (f.isFile()) { 
  
  if (f.getName().endsWith(".m4s")) {
 
  if (f.getName().endsWith("audio.m4s")) 
  audioInputPath = file.getPath() + "\\audio.m4s";
   if (f.getName().endsWith("video.m4s"))
  videoInputPath = file.getPath() + "\\video.m4s";
  videoOutPath = file.getPath() + "\\all.mp4";
  
 
  if (!videoInputPath.equals(""))
  convetor(videoInputPath, audioInputPath, videoOutPath);
  
  }
  
 } 
 
 }
 
 }
 }
}