1.准备阶段：首先需要ffmpeg.exe和mencoder.exe，java需要调用这两个文件来进行转码。

drv43260.dll,pncrt.dll,pthreadGC2.dll  为动态链接库   必须有 ，否则 rm格式 文件利用mencoder转换avi时会报如下错误

Opening video decoder: [realvid] RealVideo decoder

Error loading dll

ERROR: Could not open required DirectShow codec drvc.so.

Read the RealVideo section of the DOCS!

VDecoder init failed :(

Opening video decoder: [realvid] RealVideo decoder

Error loading dll

ERROR: Could not open required DirectShow codec drv4.so.6.0.

Read the RealVideo section of the DOCS!

VDecoder init failed :(

Opening video decoder: [realvid] RealVideo decoder

Error loading dll

ERROR: Could not open required DirectShow codec drv43260.dll.

Read the RealVideo section of the DOCS!

VDecoder init failed :(

Opening video decoder: [realvid] RealVideo decoder

Error loading dll

ERROR: Could not open required DirectShow codec drvc.bundle/Contents/MacOS/drvc.

Read the RealVideo section of the DOCS!

VDecoder init failed :(

Cannot find codec matching selected -vo and video format 0x30345652.

Read DOCS/HTML/en/codecs.html!

--------------------------------------------------------------------------------------------------------------------

2.编码阶段：

转码类------FileUploadTools

package com.test.util;

import it.sauronsoftware.jave.AudioAttributes;

import it.sauronsoftware.jave.Encoder;

import it.sauronsoftware.jave.EncoderException;

import it.sauronsoftware.jave.EncodingAttributes;

import it.sauronsoftware.jave.InputFormatException;

import it.sauronsoftware.jave.MultimediaInfo;

import it.sauronsoftware.jave.VideoAttributes;

import it.sauronsoftware.jave.VideoSize;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.sql.Timestamp;

import java.text.DecimalFormat;

import java.text.SimpleDateFormat;

import java.util.Arrays;

import java.util.Date;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpSession;

import org.apache.commons.fileupload.disk.DiskFileItem;

import org.apache.http.HttpRequest;

import org.springframework.web.multipart.MultipartFile;

import org.springframework.web.multipart.commons.CommonsMultipartFile;

public class FileUploadTool {

TransfMediaTools transfMediaTools=new TransfMediaTools();

//文件最大200M

private static long upload_maxsize=200*1024*1024;

// 文件允许格式

private static String[] allowFiles = { ".rar", ".doc", ".docx", ".zip",

".pdf", ".txt", ".swf", ".xlsx", ".gif", ".png", ".jpg", ".jpeg",

".bmp", ".xls", ".mp4", ".flv", ".ppt", ".avi", ".mpg", ".wmv",

".3gp", ".mov", ".asf", ".asx", ".vob", ".wmv9", ".rm", ".rmvb" };

//视频格式

private static String[] videoFiles={".swf",".mp4", ".flv",".avi", ".mpg", ".wmv",".3gp", ".mov", ".asf", ".asx", ".vob", ".wmv9", ".rm", ".rmvb"};

//图片格式

private static String[] photoFiles={".gif", ".png", ".jpg", ".jpeg",".bmp"};

// 允许转码的视频格式(ffmpeg)

private static String[] allowFLV = { ".avi", ".mpg", ".wmv", ".3gp",".mov", ".asf", ".asx", ".vob" ,".mp4"};

// 允许的视频转码格式(mencoder)

private static String[] allowAVI = { ".wmv9", ".rm", ".rmvb" };

//视频时长 秒

private static int max_time=180;

public Object createFile(MultipartFile multipartFile,HttpServletRequest request,HttpSession session){

Map map=new HashMap();

FileEntity entity=new FileEntity();

boolean bflag=false;

int minute=0;

int seconde=0;

int time=0;

String fileName=multipartFile.getOriginalFilename().toString();

//判断文件不能为空

if(multipartFile.getSize()!=0 && !multipartFile.isEmpty()){

bflag=true;

//判断文件大小

if(multipartFile.getSize()<=upload_maxsize){

bflag=true;

//文件类型判断

if(this.checkFileType(fileName)){

bflag=true;

try {

//获取文件时长

CommonsMultipartFile cf=(CommonsMultipartFile) multipartFile;

DiskFileItem fi=(DiskFileItem) cf.getFileItem();

File source=fi.getStoreLocation();

Encoder encoder=new Encoder();

MultimediaInfo m=encoder.getInfo(source);

System.out.println("-------"+m.getDuration());

long ls=m.getDuration()/1000;

minute=(int) ((ls%3600)/60);

seconde=(int)(ls-minute*60);

time=(int) ls;

System.out.println("此视频时长："+minute+"分"+seconde+"秒, 总时长"+ls+"秒");

System.out.println("此视频格式："+m.getFormat());

} catch (InputFormatException e1) {

e1.printStackTrace();

} catch (EncoderException e1) {

e1.printStackTrace();

}

if(time<=max_time){

bflag=true;

}else{

bflag=false;

System.out.println("视频时间过长");

map.put("code", 0);

map.put("msg", "视频时间过长");

}

}else{

bflag=false;

System.out.println("文件类型不允许");

map.put("code", 0);

map.put("msg", "文件类型不允许");

}

}else{

bflag=false;

System.out.println("文件大小超范围");

map.put("code", 0);

map.put("msg", "文件大小超范围");

}

}else{

bflag=false;

System.out.println("文件为空");

map.put("code", 0);

map.put("msg", "文件为空");

}

if(bflag){

String path = "F://video/";

// 新的文件名

String newFileName = this.getName(fileName);

//文件扩展名

String fileEnd=this.getFileExt(fileName);

//上传文件夹

File targetFile = new File(path,newFileName+fileEnd);

//1.采用transferTo方法 上传文件

//2.采用流方法上传文件 防止 文件过大 网络连接断开上传失败

if (!targetFile.exists()) {

targetFile.mkdirs();

}

try {

multipartFile.transferTo(targetFile);

//BufferedOutputStream stream = new BufferedOutputStream(

// new FileOutputStream(targetFile));

// int length=0;

// byte[] buffer = new byte[1024];

// InputStream inputStream = multipartFile.getInputStream();

// while ((length = inputStream.read(buffer)) != -1) {

// stream.write(buffer, 0, length);

// }

//

// stream.flush();

// stream.close();

} catch (Exception e) {

e.printStackTrace();

}

// 1.边上传 边压缩

// File yasFile=new File(path+"123.mp4");

// try {

// // 音频编码设置

// AudioAttributes audio = new AudioAttributes();

// audio.setCodec("libmp3lame");

// audio.setBitRate(new Integer(64000));

// audio.setChannels(new Integer(1));

// audio.setSamplingRate(new Integer(22050));

// // 视频编码设置

// VideoAttributes video = new VideoAttributes();

// video.setCodec("flv");

// video.setBitRate(new Integer(160000));

// video.setFrameRate(new Integer(15));

// video.setSize(new VideoSize(400, 300));

// // 视频转码编码设置

// EncodingAttributes attrs = new EncodingAttributes();

// attrs.setFormat("flv");

// attrs.setAudioAttributes(audio);

// attrs.setVideoAttributes(video);

// // 编码器

// Encoder encoder = new Encoder();

// encoder.encode(targetFile, yasFile, attrs);

//

// System.out.println("压缩完成...");

// } catch (EncoderException e) {

// e.printStackTrace();

//

// }

//2. 先上传 后压缩 采用工具压缩

String name = fileName.substring(0, fileName.lastIndexOf("."));

//压缩文件夹

File yasuoFile=new File(path+"yasuo/");

if(!yasuoFile.exists()){

yasuoFile.mkdirs();

}

// 相对路径

entity.setType(fileEnd);

String finalFileDir= "/filedizhi/video/yasuo/"+newFileName+fileEnd;

String size=this.getSize(targetFile);

String aviPath=targetFile.getAbsolutePath();

System.out.println("aviPath:"+aviPath);

//转码avi

if(this.checkAVIType(fileEnd)){

// 设置转换为AVI格式后文件的保存路径

String codcAviPath = path +"yasuo/"+ File.separator + newFileName + ".avi";

System.out.println("codcAviPath:"+codcAviPath);

// 获取配置的转换工具(mencoder.exe)的存放路径  tools文件夹存放在WebContent下

String mencoderPath = request.getSession().getServletContext().getRealPath("tools/mencoder.exe");

aviPath = transfMediaTools.processAVI(mencoderPath, targetFile.getAbsolutePath(), codcAviPath);

fileEnd = this.getFileExt(codcAviPath);

}

if(aviPath!=null){

//转码Flv

if (this.checkMediaType(fileEnd)) {

try {

// 设置转换为flv格式后文件的保存路径

String codcFilePath = path +"yasuo/"+ File.separator + newFileName + ".flv";

System.out.println("codcFilePath:"+codcFilePath);

// 获取配置的转换工具(ffmpeg.exe)的存放路径

String ffmpegPath =request.getSession().getServletContext().getRealPath("tools/ffmpeg.exe");

transfMediaTools.processFLV(ffmpegPath, aviPath, codcFilePath);

finalFileDir = "/filedizhi/video/yasuo/" + newFileName + ".flv";

} catch (Exception e) {

e.printStackTrace();

}

}

entity.setSize(size);

entity.setPath(finalFileDir);

entity.setTitleOrig(name);

entity.setTitleAlter(newFileName);

Timestamp timestamp = new Timestamp(System.currentTimeMillis());

entity.setUploadTime(timestamp);

map.put("code", 1);

map.put("msg", "上传成功");

map.put("data", entity);

return map;

}else{

return null;

}

}else{

return map;

}

}

/**

* 视频文件类型判断

*

* @param fileName

* @return

*/

private boolean checkFileType(String fileName) {

Iterator type = Arrays.asList(videoFiles).iterator();

while (type.hasNext()) {

String ext = type.next();

if (fileName.toLowerCase().endsWith(ext)) {

return true;

}

}

return false;

}

/**

* 图片文件类型判断

*

* @param fileName

* @return

*/

public boolean checkPhotoFileType(String fileName) {

Iterator type = Arrays.asList(photoFiles).iterator();

while (type.hasNext()) {

String ext = type.next();

if (fileName.toLowerCase().endsWith(ext)) {

return true;

}

}

return false;

}

/**

* 视频类型判断(flv)

*

* @param fileName

* @return

*/

private boolean checkMediaType(String fileEnd) {

Iterator type = Arrays.asList(allowFLV).iterator();

while (type.hasNext()) {

String ext = type.next();

if (fileEnd.equals(ext)) {

return true;

}

}

return false;

}

/**

* 视频类型判断(AVI)

*

* @param fileName

* @return

*/

private boolean checkAVIType(String fileEnd) {

Iterator type = Arrays.asList(allowAVI).iterator();

while (type.hasNext()) {

String ext = type.next();

if (fileEnd.equals(ext)) {

return true;

}

}

return false;

}

/**

* 获取文件扩展名

*

* @return string

*/

private String getFileExt(String fileName) {

return fileName.substring(fileName.lastIndexOf("."));

}

/**

* 依据原始文件名生成新文件名

* @return

*/

private String getName(String fileName) {

Date date = new Date();

SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd_HH~mm~ss");

Iterator type = Arrays.asList(allowFiles).iterator();

while (type.hasNext()) {

String ext = type.next();

if (fileName.contains(ext)) {

String newFileName = formatter.format(date) + "_" + stringfilString(fileName.substring(0, fileName.lastIndexOf(ext)));

return newFileName;

}

}

return "";

}

public static String stringfilString(String str){

// 只允许字母和数字 // String regEx = "[^a-zA-Z0-9]";

// 清除掉所有特殊字符

String regEx = "[`~!@#$%^&*()+=|{}':;',\\[\\]<>/?~！@#￥%……&*()——+|{}【】‘；：”“’。，、？]";

Pattern p = Pattern.compile(regEx);

Matcher m = p.matcher(str);

return filterChinese(m.replaceAll("").trim());

}

public static String filterChinese(String chin){

return chin.replaceAll("[\\u4e00-\\u9fa5]", "");

}

/**

* 文件大小，返回kb.mb

*

* @return

*/

private String getSize(File file) {

String size = "";

long fileLength = file.length();

DecimalFormat df = new DecimalFormat("#.00");

if (fileLength < 1024) {

size = df.format((double) fileLength) + "BT";

} else if (fileLength < 1048576) {

size = df.format((double) fileLength / 1024) + "KB";

} else if (fileLength < 1073741824) {

size = df.format((double) fileLength / 1048576) + "MB";

} else {

size = df.format((double) fileLength / 1073741824) + "GB";

}

return size;

}

}

3.实体类

public class FileEntity {

private String type;

private String size;

private String path;

private String titleOrig;

private String titleAlter;

private Timestamp uploadTime;

public String getType() {

return type;

}

public void setType(String type) {

this.type = type;

}

public String getSize() {

return size;

}

public void setSize(String size) {

this.size = size;

}

public String getPath() {

return path;

}

public void setPath(String path) {

this.path = path;

}

public String getTitleOrig() {

return titleOrig;

}

public void setTitleOrig(String titleOrig) {

this.titleOrig = titleOrig;

}

public String getTitleAlter() {

return titleAlter;

}

public void setTitleAlter(String titleAlter) {

this.titleAlter = titleAlter;

}

public Timestamp getUploadTime() {

return uploadTime;

}

public void setUploadTime(Timestamp uploadTime) {

this.uploadTime = uploadTime;

}

}

4.设置编码格式

package com.test.util;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.util.ArrayList;

import java.util.List;

public class TransfMediaTools {

/**

* 视频转码flv

*

* @param ffmpegPath

* 转码工具的存放路径

* @param upFilePath

* 用于指定要转换格式的文件,要截图的视频源文件

* @param codcFilePath

* 格式转换后的的文件保存路径

* @return

* @throws Exception

*/

public void processFLV(String ffmpegPath, String upFilePath, String codcFilePath) {

// 创建一个List集合来保存转换视频文件为flv格式的命令

List convert = new ArrayList();

convert.add(ffmpegPath); // 添加转换工具路径

convert.add("-i"); // 添加参数＂-i＂，该参数指定要转换的文件

convert.add(upFilePath); // 添加要转换格式的视频文件的路径

convert.add("-ab");

convert.add("56");

convert.add("-ar");

convert.add("22050");

convert.add("-q:a");

convert.add("8");

convert.add("-r");

convert.add("15");

convert.add("-s");

convert.add("600*500");

/*

* convert.add("-qscale"); // 指定转换的质量 convert.add("6");

* convert.add("-ab"); // 设置音频码率 convert.add("64"); convert.add("-ac");

* // 设置声道数 convert.add("2"); convert.add("-ar"); // 设置声音的采样频率

* convert.add("22050"); convert.add("-r"); // 设置帧频 convert.add("24");

* convert.add("-y"); // 添加参数＂-y＂，该参数指定将覆盖已存在的文件

*/

convert.add(codcFilePath);

try {

Process videoProcess = new ProcessBuilder(convert).redirectErrorStream(true).start();

new PrintStream(videoProcess.getInputStream()).start();

videoProcess.waitFor();

} catch (IOException e1) {

e1.printStackTrace();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

/**

* 对ffmpeg无法解析的文件格式(wmv9，rm，rmvb等), 先用mencoder转换为avi(ffmpeg能解析的)格式

*

* @param mencoderPath

* 转码工具的存放路径

* @param upFilePath

* 用于指定要转换格式的文件,要截图的视频源文件

* @param codcFilePath

* 格式转换后的的文件保存路径

* @return

* @throws Exception

*/

public String processAVI(String mencoderPath, String upFilePath, String codcAviPath) {

// boolean flag = false;

List commend = new ArrayList();

commend.add(mencoderPath);

commend.add(upFilePath);

commend.add("-oac");

commend.add("mp3lame");

// commend.add("lavc");

commend.add("-lameopts");

commend.add("preset=64");

commend.add("-lavcopts");

commend.add("acodec=mp3:abitrate=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(codcAviPath);

try {

// 预处理进程

ProcessBuilder builder = new ProcessBuilder();

builder.command(commend);

builder.redirectErrorStream(true);

// 进程信息输出到控制台

Process p = builder.start();

BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));

String line = null;

while ((line = br.readLine()) != null) {

System.out.println(line);

}

p.waitFor();// 直到上面的命令执行完，才向下执行

return codcAviPath;

} catch (Exception e) {

e.printStackTrace();

return null;

}

}

}

class PrintStream extends Thread {

java.io.InputStream __is = null;

public PrintStream(java.io.InputStream is) {

__is = is;

}

public void run() {

try {

while (this != null) {

int _ch = __is.read();

if (_ch != -1)

System.out.print((char) _ch);

else

break;

}

} catch (Exception e) {

e.printStackTrace();

}

}

}

5.调用接口上传

/**

* 上传视频

* @param file

* @param request

* @param model

* @param session

* @param response

* @return

*/

@RequestMapping("/uploadflv")

@ResponseBody

public Object uploadflv(@RequestParam("file") MultipartFile file, HttpServletRequest request, Model model, HttpSession session, HttpServletResponse response){

FileUploadTool fileUploadTool=new FileUploadTool();

Object map=fileUploadTool.createFile(file, request, session);

return map;

}