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(yùn)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(gè)drv43260.dll東西放到C:WindowsSystem32下面
這幾天在寫一個(gè)視頻管理系統(tǒng)，遇到一個(gè)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(shí)現(xiàn)了視頻進(jìn)行轉(zhuǎn)換的同時(shí)還能夠進(jìn)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(jìn)行轉(zhuǎn)換為flv!
我主要寫3個(gè)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(kuò)展名private Stringfilename; // 包括擴(kuò)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(shí)" : "" + hour + "小時(shí)"; 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;}} |
