将视频文件转为flv文件

package mature;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.Vector;

public class ConvertVideo {

private final static String S_PATH = "C://input//hunan.rm";

public ConvertVideo() {
super();
// TODO Auto-generated constructor stub
}

private static boolean isFileExist(String path) {
File file = new File(path);
if (!file.isFile()) {
return false;
}
return true;
}


/**将视频文件转为flv文件*/
private static boolean process(){
int type = checkFileType();
boolean statu = false;
if(type==0){
/**直接将文件转为flv文件*/
statu = convertVideoFLV(S_PATH);
}else if(type==1){
String aviFilePath = convertVideoAVI(type);
if(aviFilePath==null || aviFilePath.trim().equals("")){
return false;
}
statu = convertVideoFLV(aviFilePath);
}
return statu;
}

/** 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.*/
private static String convertVideoAVI(int type) {
List commend = new ArrayList();
commend.add("c://input//mencoder");
commend.add(S_PATH);
commend.add("-srate");
commend.add("22050");
commend.add("-vf");
commend.add("scale=208:-3");
commend.add("-ofps");
commend.add("12");
commend.add("-oac");
commend.add("mp3lame");
commend.add("-lameopts");
commend.add("mode=3:cbr:br=24");
commend.add("-ovc");
commend.add("lavc");
commend.add("-ffourcc");
commend.add("DX50");
commend.add("-lavcopts");
commend.add("vcodec=mpeg4:vhq:vbitrate=112");
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("c://input//b.avi");

try {
Process process = null;
ProcessBuilder builder = new ProcessBuilder();
builder.command(commend);
//process = Runtime.getRuntime().exec(commend.toString());
process = builder.start();

BufferedReader reader =new BufferedReader(new InputStreamReader(process.getInputStream()));
String dLine = "";
while((dLine = reader.readLine()) != null){

}
process.waitFor();
} catch (Exception e) {
e.printStackTrace();
return null;
}
return "c://input//b.avi";
}

/**ffmpeg能解析的格式：（asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv等）*/
private static boolean convertVideoFLV(String oldfilepath) {

if (!isFileExist(S_PATH)) {
System.out.println(oldfilepath + " is not file");
return false;
}

/**文件命名*/
Calendar calendar = Calendar.getInstance();
String saveFileName = String.valueOf(calendar.getTimeInMillis())+ Math.round(Math.random() * 100000);

List commend = new ArrayList();
commend.add("c://input//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("600x500");
commend.add("c://output//"+saveFileName+".flv");


try {
Process proce = null;
Runtime runtime = Runtime.getRuntime();
String cmd = "";
String cut = "c://input//ffmpeg.exe -i "+ oldfilepath+ " -y -f image2 -ss 8 -t 0.001 -s 600x500 c://output//"+ saveFileName + ".jpg";
String cutCmd = cmd + cut;
proce = runtime.exec(cutCmd);
ProcessBuilder builder = new ProcessBuilder(commend);
builder.start();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}

/**检查文件类型*/
private static int checkFileType(){
String type = S_PATH.substring(S_PATH.lastIndexOf(".")+1,S_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;
}

/**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;
}
/**
* @param args
*/
public static void main(String[] args) {
if (!isFileExist(S_PATH)) {
System.out.println(S_PATH + " is not file");
return;
}
if (process()) {
System.out.println("ok");
}
}

}