詳解java調(diào)用ffmpeg轉(zhuǎn)換視頻格式為flv
注意：下面的程序是在Linux下運行的，如果在windows下rmvb轉(zhuǎn)換成avi會出現(xiàn)問題，想成功需要下載下個drv43260.dll東西放到C:WindowsSystem32下面
這幾天在寫一個視頻管理系統(tǒng)，遇到一個很大的問題就是如果把不同格式轉(zhuǎn)換為flv，格式！經(jīng)過網(wǎng)上的一番搜索，自己在總結(jié)，整理，整理，終于整出來了！實現(xiàn)了視頻進行轉(zhuǎn)換的同時還能夠進行視頻截圖和刪除原文件的功能！
格式轉(zhuǎn)換主要原理就是先用java調(diào)用ffmpeg的exe文件！
但是有些格式是ffmpeg不能處理的比如rmvb，這樣的可以先調(diào)用mencoder先把格式轉(zhuǎn)換為avi再進行轉(zhuǎn)換為flv!
我主要寫3個類：分別為Conver.java
ConverBegin.Java ConverVideo.java
Conver.java 代碼如下：
package org.Conver;
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
@SuppressWarnings("serial")
public class Conver extends JFrame{
public static JTextArea OutShowLog;
public Conver() {
setTitle("FLV轉(zhuǎn)換");
setSize(500, 400);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
OutShowLog = new JTextArea();
JScrollPane OutPane = newJScrollPane(OutShowLog);
add(OutPane,BorderLayout.CENTER);
setVisible(true);
}
public static void main(String args[]) {
new Conver();
ConverBegin cb = new ConverBegin();
cb.start();
}
}
ConverBegin.java 代碼如下：
package org.Conver;
import java.io.File;
public class ConverBegin extends Thread{
String[] ff;
public void run(){
while (true) {
String folderpath ="other/";
//String path = null;
File f = newFile(folderpath);
if (f.isDirectory()) {
ff = f.list();
int i =0;
while (i ff.length) {
new ConverVideo(folderpath+ff[i]).beginConver();
i++;
}
Conver.OutShowLog.append("---------------總共轉(zhuǎn)換了"+ff.length+"-----------視頻------------");
ff =null;
}
f = null;
try {
Thread.sleep(10000);
} catch (InterruptedExceptione) {
//如果失敗重啟線程
this.start();
}
}
}
}
ConverBegin.java 代碼如下
package org.Conver;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;
public class ConverVideo {
private Date dt;
private long begintime;
private String PATH;
private String filerealname; // 文件名 不包括擴展名
private Stringfilename; // 包括擴展名
private String videofolder = "other/"; //別的格式視頻的目錄
private String flvfolder ="flv/"; //flv視頻的目錄
privateStringffmpegpath="ffmpeg/ffmpeg.exe"; //ffmpeg.exe的目錄
privateStringmencoderpath="ffmpeg/mencoder"; //mencoder的目錄
privateStringvideoRealPath="flv/"; //截圖的視頻目錄;
privateString imageRealPath ="img/"; //截圖的存放目錄
//privateString batrealpath="ffmpeg/ffmpeg.bat"; //bat目錄
publicConverVideo(){}
public ConverVideo(String path) {
PATH = path;
}
publicString getPATH() {
return PATH;
}
public void setPATH(String path) {
PATH = path;
}
public boolean beginConver(){
File fi = new File(PATH);
filename = fi.getName();
filerealname = filename.substring(0,filename.lastIndexOf("."))
.toLowerCase();
Conver.OutShowLog.append("----接收到文件("+PATH+")需要轉(zhuǎn)換--------------------------");
if (!checkfile(PATH)) {
Conver.OutShowLog.append(PATH+ "文件不存在"+" ");
return false;
}
dt = new Date();
begintime = dt.getTime();
Conver.OutShowLog.append("----開始轉(zhuǎn)文件("+PATH+")--------------------------");
if (process()) {
Date dt2 = new Date();
Conver.OutShowLog.append("轉(zhuǎn)換成功");
long endtime =dt2.getTime();
long timecha = (endtime -begintime);
String totaltime =sumTime(timecha);
Conver.OutShowLog.append("共用了:" + totaltime+" ");
if(processImg()) {
Conver.OutShowLog.append("截圖成功了 ");
}else {
Conver.OutShowLog.append("截圖不成功了 ");
}
PATH = null;
return true;
}else {
PATH = null;
return false;
}
}
public boolean processImg() {
// System.out.println(newfilename + "->" +newimg);
List commend = new java.util.ArrayList();
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(imageRealPath+filerealname+".jpg");
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(commend);
builder.start();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
private boolean process() {
int type = checkContentType();
boolean status = false;
if (type == 0) {
// status =processFLV(PATH);// 直接將文件轉(zhuǎn)為flv文件
status =processFLV(PATH);
} else if (type == 1) {
String avifilepath =processAVI(type);
if (avifilepath == null)
returnfalse;
// avi文件沒有得到
else {
System.out.println("kaishizhuang");
status =processFLV(avifilepath);// 將avi轉(zhuǎn)為flv
}
}
return status;
}
private int checkContentType() {
String type =PATH.substring(PATH.lastIndexOf(".") + 1, PATH.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;
}
// 對ffmpeg無法解析的文件格式(wmv9，rm，rmvb等),
// 可以先用別的工具（mencoder）轉(zhuǎn)換為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;
}
private boolean checkfile(String path) {
File file = new File(path);
if (!file.isFile()) {
return false;
}else {
return true;
}
}
// 對ffmpeg無法解析的文件格式(wmv9，rm，rmvb等),可以先用別的工具（mencoder）轉(zhuǎn)換為avi(ffmpeg能解析的)格式.
private String processAVI(int type) {
List commend = new java.util.ArrayList();
commend.add(mencoderpath);
commend.add(PATH);
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");
// 命令類型：mencoder 1.rmvb -oac mp3lame -lameoptspreset=64 -ovc xvid
// -xvidencopts bitrate=600 -of avi -ormvb.avi
try {
ProcessBuilder builder = newProcessBuilder();
builder.command(commend);
Process p =builder.start();
doWaitFor(p);
return videofolder +filerealname + ".avi";
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
// ffmpeg能解析的格式：（asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等）
private boolean processFLV(String oldfilepath) {
if (!checkfile(PATH)) {
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(flvfolder + filerealname +".flv");
try {
ProcessBuilder builder = newProcessBuilder();
String cmd =commend.toString();
builder.command(commend);
//builder.redirectErrorStream(true);
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 pis 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) {
// Print the output of our system call
Character c = new Character((char) in.read());
System.out.print(c);
}
while (err.available() > 0) {
// Print the output of our system call
Character c = new Character((char) err.read());
System.out.print(c);
}
// Ask the process for its exitValue. If the process
// is not finished, an IllegalThreadStateException
// is thrown. If it is finished, we fall through and
// the variable finished is set to true.
exitValue = p.exitValue();
finished = true;
} catch(IllegalThreadStateException e) {
// Process is not finished yet;
// Sleep a little to save on CPU cycles
Thread.currentThread().sleep(500);
}
}
} catch (Exception e) {
// unexpected exception! printit out for debugging...
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 completion status to caller
return exitValue;
}
public void deleteFile(String filepath) {
File file = new File(filepath);
if (PATH.equals(filepath)) {
if (file.delete()) {
System.out.println("文件" + filepath + "已刪除");
}
} else {
if (file.delete()) {
System.out.println("文件" + filepath + "已刪除 ");
}
File filedelete2 = newFile(PATH);
if (filedelete2.delete()){
System.out.println("文件" + PATH + "已刪除");
}
}
}
public String sumTime(long ms) {
int ss = 1000;
long mi = ss * 60;
long hh = mi * 60;
long dd = hh * 24;
long day = ms / dd;
long hour = (ms - day * dd) / hh;
long minute = (ms - day * dd - hour * hh) /mi;
long second = (ms - day * dd - hour * hh -minute * mi) / ss;
long milliSecond = ms - day * dd - hour * hh -minute * mi - second
* ss;
String strDay = day 10 ? "0" +day + "天" : "" + day + "天";
String strHour = hour 10 ? "0"+ hour + "小時" : "" + hour + "小時";
String strMinute = minute 10 ?"0" + minute + "分" : "" + minute + "分";
String strSecond = second 10 ?"0" + second + "秒" : "" + second + "秒";
String strMilliSecond = milliSecond 10 ? "0" + milliSecond : ""
+milliSecond;
strMilliSecond = milliSecond 100 ? "0" + strMilliSecond + "毫秒" : ""
+strMilliSecond + " 毫秒";
return strDay + " " + strHour + ":" + strMinute+ ":" + strSecond + " "
+strMilliSecond;
}
}
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