JMF播放AVI格式的视频

public class Conver {

public void run() {

try {

// 转换并截图

String filePath = "E:\\wk\\测试用视频\\littlethree.avi";

ConverVideo cv = new ConverVideo(filePath);

cv.beginConver();

} catch (Exception e) {

e.printStackTrace();

}

}

public static void main(String args[]) {

Conver c = new Conver();

c.run();

}

}

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.util.Date;

import java.util.List;

public class ConverVideo {

private String PATH;

private String filerealname; // 文件名 不包括扩展名

private String filename; // 包括扩展名

private String flvfolder = "D:\\"; // flv视频的目录

private String ffmpegpath = "D:\\ffmpeg\\bin\\ffmpeg.exe"; // ffmpeg.exe的目录

public ConverVideo() {

}

public ConverVideo(String path) {

PATH = path;

}

public String 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();

if (!checkfile(PATH)) {

System.out.println(PATH + "文件不存在");

return false;

}

if (process()) { //proess函数用来转换视频格式

PATH = null;

return true;

} else {

PATH = null;

return false;

}

}

private boolean process() {

int type = checkContentType();

boolean status = false;

if (type == 0) {

status = processUSEAVI(PATH);

}

return status;

}

//检查文件类型

private int checkContentType() {

String type = PATH.substring(PATH.lastIndexOf(".") + 1, PATH.length()).toLowerCase();

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("flv")) {

return 0;

}

return 9;

}

private boolean checkfile(String path) {

File file = new File(path);

if (!file.isFile()) {

return false;

} else {

return true;

}

}

private boolean processUSEAVI(String oldfilepath) {

if (!checkfile(PATH)) {

System.out.println("上传视频文件:"+oldfilepath + "不是文件");

return false;

}

List commend = new java.util.ArrayList();

commend.add(ffmpegpath); // 添加转换工具路径

commend.add("-i"); //添加参数＂-i＂，该参数指定要转换的文件

commend.add(oldfilepath); // 添加要转换格式的视频文件的路径

commend.add("-ab"); //设置音频码率 

commend.add("128");

commend.add("-qscale");

commend.add("6");

commend.add("-s");//

commend.add("352x288");

commend.add("-vcodec"); //视频流编码

commend.add("h263");

commend.add("-acodec"); //音频编码

commend.add("pcm_s16le"); //音频编码

commend.add("-ac"); //设置声道数 1就是单声道，2就是立体声

commend.add("2");

commend.add("-ar"); //设置声音的采样频率

commend.add("22050");

commend.add("-r"); //设置帧频

commend.add("25");

commend.add("-y"); // 添加参数＂-y＂，该参数指定将覆盖已存在的文件

commend.add(flvfolder + filerealname + ".avi");

try {

ProcessBuilder builder = new ProcessBuilder();

String cmd = commend.toString();

builder.command(commend);

Process p = builder.start();

doWaitFor(p);

p.destroy();

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 p is finished

try {

in = p.getInputStream();

err = p.getErrorStream();

boolean finished = false; // Set to true when p is finished

while (!finished) {

try {

while (in.available() > 0) {

Character c = new Character((char) in.read());

// System.out.print(c);

}

while (err.available() > 0) {

Character c = new Character((char) err.read());

// System.out.print(c);

}

exitValue = p.exitValue();

finished = true;

} catch (IllegalThreadStateException e) {

Thread.currentThread().sleep(500);

}

}

} catch (Exception e) {

System.err.println("doWaitFor()视频上传转码错误:" + e.getMessage());

} finally {

try {

if (in != null) {

in.close();

}

} catch (IOException e) {

System.out.println("视频上传转码错误:"+e.getMessage());

}

if (err != null) {

try {

err.close();

} catch (IOException e) {

System.out.println("视频上传转码错误:"+e.getMessage());

}

}

}

return exitValue;

}

}