java实现视频转码

public class ConvertVideo {/** * @param args *///private final static String PATH="c:\\ffmpeg\\input\\test.avi";private static String inputPath="";private static String outputPath="";private static String ffmpegPath="";public static void main(String[] args) {getPath("D:\\apache-tomcat-7.0.55\\webapps\\ResourcesShare\\WEB-INF\\uploadFile\\0011.51CTO学院-struts2hibernatespring整合第十一章视频.mp4","D:\\apache-tomcat-7.0.55\\webapps\\ResourcesShare\\tools\\ffmpeg","D:\\apache-tomcat-7.0.55\\webapps\\ResourcesShare\\tools\\ffmpeg\\output");if(!checkfile(inputPath)){System.out.println(inputPath+" is not file");return;}if(process()){System.out.println("ok");}}private static void getPath(String input,String ffmpeg,String output){inputPath=input;outputPath=output;ffmpegPath=ffmpeg;}public static void getRun(String inputPath,String ffmegPath,String outputPath){System.out.println(inputPath+"  "+ffmegPath+" "+outputPath);getPath(inputPath,ffmegPath,outputPath);if(!checkfile(inputPath)){System.out.println(inputPath+" is not file");return;}if(process()){System.out.println("ok");}}private static boolean process(){int type=checkContentType();boolean status=false;if(type==0){System.out.println("直接将文件转换为flv文件");status=processFLV(inputPath);//直接将文件转为flv文件}else if(type==1){System.out.println("先转成avi");String avifilepath=processAVI(type);if(avifilepath==null){return false;//avi文件没有得到}status=processFLV(avifilepath);}return status;}private static int checkContentType(){String type=inputPath.substring(inputPath.lastIndexOf(".")+1,inputPath.length()).toLowerCase();//ffmpeg能解难析的格式 ：（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("asx")){return 0;}else if(type.equals("asf")){return 0;}else if(type.equals("wmv")){return 0;}else if(type.equals("3gp")){return 0;}else if(type.equals("mp4")){return 0;}else if(type.equals("mov")){return 0;}else if(type.equals("avi")){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;}public static boolean checkfile(String path){File file=new File(path);if(!file.isFile()){return false;}return true;}//对ffmpeg无法解析匆文件格式（wmv9，rm,rmvb等，可以先用别的（moncoder）转换为avi）private static String processAVI(int type){List<String> commend=new ArrayList<String>();commend.add(ffmpegPath+"\\mencoder");commend.add(inputPath);commend.add("-oac");commend.add("lavc");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(outputPath+"\\a.avi");try{ProcessBuilder builder=new ProcessBuilder();builder.command(commend);builder.start();return outputPath+"a.avi";}catch(Exception e){e.printStackTrace();return null;}}//ffmpeg能解析格式：（asx,asf,mpg,wmv,3gp.mp4.mov,avi.flv等）private static boolean processFLV(String oldfilepath){if(!checkfile(inputPath)){System.out.println(oldfilepath+"is not file");return false;}//文件命名//Calendar c=Calendar.getInstance();//String savename=String.valueOf(c.getTimeInMillis())+Math.round(Math.random()*100000);List<String> commend=new ArrayList<String>();commend.add(ffmpegPath+"\\ffmpeg");commend.add("-i");commend.add(oldfilepath);commend.add("-ab");commend.add("56");commend.add("-ar");commend.add("22050");commend.add("-qscale");commend.add("8");commend.add("-r");commend.add("15");commend.add("-s");commend.add("600*500");commend.add(FileUtil.changeType(inputPath, "flv"));try{//Runtime runtime=Runtime.getRuntime();//Process proce=null;//String cmd="";//String cut="    c:\\ffmpeg\\ffmpeg.exe  -i  "//+oldfilepath//+"   -y   -f  image2   -ss   8   -t   0.001   -s   600*500   c:\\ffmpeg\\output\\"//+" a.jpg";//String cutCmd=cmd+cut;//proce=runtime.exec(cutCmd);Process videoProcess=new ProcessBuilder(commend).redirectErrorStream(true).start();new ClearOutput(videoProcess.getErrorStream()).start();new ClearOutput(videoProcess.getInputStream()).start();videoProcess.waitFor();FileUtil.delFile(inputPath);return true;}catch(Exception e){e.printStackTrace();return false;}}static class ClearOutput extends Thread{InputStream in=null;public ClearOutput(InputStream in){this.in=in;}public void run() {int len=-1;try{while((len=in.read())!=-1){System.out.println(len);}}catch(Exception e){e.printStackTrace();}}}}

//获取文件后缀名public static String getType(String fileName){return fileName.substring(fileName.lastIndexOf(".")+1);}//改文件后缀名public static String changeType(String fileName,String type){return fileName.substring(0,fileName.lastIndexOf(".")+1)+type;}//删除文件public static void delFile(String path){File file=new File(path);if(file.isFile()){file.delete();}}