package com.loach;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* @Author : GaoMing
* @Create_Date : 2019/09/21/09:56
* @Pack_name : com.loach : videoUnit
* *****************************************************
* 注释:
*/
public class videoUnit {
//定义一个输入流
private static String inputPath = "";
//定义一个输出流
private static String outputPath = "";
//FFmpeg 文件位置
private static String ffmpegPath = "";
public static void main(String args[]) throws IOException {
getPath();
if (!checkfile(inputPath)) {
System.out.println(inputPath + "is not file");
return;
}
if (process()) {
System.out.println("转换成功。请移步" + outputPath + "查看");
}
}
/**
* 获取Path 路径
*/
public static void getPath() {
// 先获取当前项目路径，在获得源文件、目标文件、转换器的路径
File diretory = new File("");
try {
String currPath = diretory.getAbsolutePath();
inputPath = "H:\\yan\\a.flv";
outputPath = "H:\\video\\";
ffmpegPath = "H:\\ffmpeg\\bin\\";
System.out.println(currPath);
} catch (Exception e) {
System.out.println("获取文件路径出错 ");
}
}
public static boolean process() {
//0:FFmpeg 1:mencoder 9:无对应类型
int type = checkContentType();
System.out.println(type);
boolean status = false;
//FFmpeg能解析格式 直接转MP4
if (type == 0) {
System.out.println("直接转成mp4格式");
//记录开始时间
long startTime = System.currentTimeMillis();
status = processMp4(inputPath);
//记录结束时间
long endTime = System.currentTimeMillis();
//执行时长
float excTime = (float) (endTime - startTime) / 1000;
System.out.println("执行时长" + excTime + "s");
return status;
}
// FFmpeg无法解析格式，使用mencoder转换AVI后再FFmpeg转MP4
if (type == 1) {
System.out.println("mencoder转换AVI");
//记录开始时间
long startTime = System.currentTimeMillis();
String avifilepath = processAVI(type);
if (avifilepath == null) {
System.out.println("avi文件没有得到");
return false;
} else {
status = processMp4(inputPath);
}
//记录结束时间
long endTime = System.currentTimeMillis();
//执行时长
float excTime = (float) (endTime - startTime) / 1000;
System.out.println("执行时长" + excTime + "s");
return status;
}
if (type == 9) {
System.out.println("格式非法！");
return false;
}
return status;
}
/**
* 判断FFmpeg能否转换 0:FFmpeg 1:mencoder 9:无法转换
*
* @return
*/
private static int checkContentType() {
String type = inputPath.substring(inputPath.lastIndexOf(".") + 1, inputPath.length()).toLowerCase();
// ffmpeg能解析的格式：（avi mpg wmv 3gp mov mp4 asf asx flv wmv9 rm rmvb ）
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),先用工具（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;
}
private static boolean checkfile(String path) {
File file = new File(path);
if (!file.isFile()) {
return false;
}
return true;
}
/**
* 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
*
* @param type
* @return
*/
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("mp4");
commend.add("-o");
commend.add(outputPath + "a.AVI");
try {
ProcessBuilder builder = new ProcessBuilder();
Process process = builder.command(commend).redirectErrorStream(true).start();
new PrintStream(process.getInputStream());
new PrintStream(process.getErrorStream());
process.waitFor();
return outputPath + "a.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）
*
* @param oldfilepath
* @return
*/
private static boolean processFlv(String oldfilepath) {
if (!checkfile(inputPath)) {
System.out.println(oldfilepath + " is not file");
return false;
}
List<String> command = new ArrayList<String>();
command.add(ffmpegPath + "ffmpeg");
command.add("-i");
command.add(oldfilepath);
command.add("-ab");
command.add("56");
command.add("-ar");
command.add("22050");
command.add("-qscale");
command.add("8");
command.add("-r");
command.add("15");
command.add("-s");
command.add("600x500");
command.add(outputPath + "a.flv");
try {
Process videoProcess = new ProcessBuilder(command).redirectErrorStream(true).start();
new PrintStream(videoProcess.getErrorStream()).start();
new PrintStream(videoProcess.getInputStream()).start();
videoProcess.waitFor();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* ffmpeg能解析的格式 直接转换MP4
*
* @param oldfilepath
* @return
*/
private static boolean processMp4(String oldfilepath) {
if (!checkfile(inputPath)) {
System.out.println(oldfilepath + " is not file");
return false;
}
List<String> command = new ArrayList<String>();
command.add(ffmpegPath + "ffmpeg");
command.add("-i");
command.add(oldfilepath);
command.add("-c:v");
command.add("libx264");
command.add("-mbd");
command.add("0");
command.add("-c:a");
command.add("aac");
command.add("-strict");
command.add("-2");
command.add("-pix_fmt");
command.add("yuv420p");
command.add("-movflags");
command.add("faststart");
command.add(outputPath + "a.mp4");
try {
Process videoProcess = new ProcessBuilder(command).redirectErrorStream(true).start();
new PrintStream(videoProcess.getErrorStream()).start();
new PrintStream(videoProcess.getInputStream()).start();
videoProcess.waitFor();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
static class PrintStream extends Thread {
java.io.InputStream __is = null;
public PrintStream(java.io.InputStream is) {
__is = is;
}
@Override
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();
}
}
}
}
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