java截取视频空间的中间段
1.下载ffmpeg集成（静态）版本，解压后无需安装
链接：https://pan.baidu.com/s/1-a4lDqqJDRdX99500L6lIw 密码：qp8c
2.代码
CmdExecuter
package com.amigo.online.provider.manager.util.video.processing;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.List;
public class CmdExecuter {
public static String exec(List cmd) {
String converted_time = null;
Process proc =null;
BufferedReader stdout = null;
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(cmd);
builder.redirectErrorStream(true);
proc = builder.start();
stdout = new BufferedReader(new InputStreamReader(proc.getInputStream()));
String line;
int lineNumber=1;
List returnStringList = new LinkedList();
while ((line = stdout.readLine()) != null) {
System.out.println("第"+lineNumber+"行:"+line);
lineNumber=lineNumber+1;
returnStringList.add(FFMPEG.dealString(line));
}
String info = "";
for (int i = returnStringList.size() - 1; i >= 0; i--) {
if (null != returnStringList.get(i) && returnStringList.get(i).startsWith("frame=")) {
info = returnStringList.get(i);
break;
}
}
if (null != info) {
converted_time = info.split("time=")[1].split("bitrate=")[0].trim();
}
} catch (IndexOutOfBoundsException ex) {
converted_time = null;
} catch (Exception e) {
e.printStackTrace();
}finally{
try {
proc.waitFor();
stdout.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return converted_time;
}
}
FFMPEG
package com.amigo.online.provider.manager.util.video.processing;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class FFMPEG {
public static String dealString(String str) {
Matcher m = java.util.regex.Pattern.compile("^frame=.*").matcher(str);
String msg = "";
while (m.find()) {
msg = m.group();
}
return msg;
}
/**
* 如果是数字就是成功的时间(秒数)
*
* @param str
* @return
*/
public static boolean isNumeric(String str) {
Pattern pattern = Pattern.compile("[0-9]*");
Matcher isNum = pattern.matcher(str);
if (!isNum.matches()) {
return false;
}
return true;
}
/**
* 如果返回不是null的值就是成功(值为转换用时单位:秒)
*
* @param instr
* @return
*/
public static String returnSecond(String instr) {
String returnValue = null;
if (null != instr) {
String[] a = instr.split("\\.");
String[] b = a[0].split(":");
int returnNumber = 0;
if (null != instr && b[0].length() != 0) {
returnNumber = Integer.valueOf(b[0]) * 60 * 60 + Integer.valueOf(b[1]) * 60 + Integer.valueOf(b[2]);
returnValue = String.valueOf(returnNumber);
} else {
returnValue = null;
}
}
return returnValue;
}
/**
* 获取视频格式(转码前的格式和转码后的格式都可以调用)
*
* @param outputPath
* @return
*/
public static String returnVideoFormat(String outputPath) {
return outputPath.substring(outputPath.lastIndexOf(".") + 1);
}
/**
* @ HashMap dto 参数传递对象
* dto中包含的参数
* (必填)1.ffmpeg_path:ffmpeg执行文件地址,如 d:\\ffmpeg\\ffmpeg.exe
* Linux下直接调用ffmpeg命令(当然你事先已经有这个程序了)
* (必填)2.input_path:原视频路径
* (必填)3.video_converted_path:转换后视频输出路径
* (可选)4.screen_size:视频尺寸 长度乘宽度 乘号用英文小写"x"如 512x480
* (可选)5.logo:水印地址(其实在ffmpeg中有一个专门的watermark参数,logo跟它有何不同,我还没看,不过对我来说效果一样
* 貌似需要png图片才行)
* (可选,如果填写必须有logo才行,默认为0)6.xaxis:水印logo的横坐标(只有logo参数为一个正确路径才行) 比如0
* (可选,如果填写必须有logo才行,默认为0)6.yaxis:水印logo的纵坐标(只有logo参数为一个正确路径才行) 比如0
* (可选)vb:视频比特率,传入一个数值,单位在程序里面拼接了k (可选)ab:音频比特率,传入一个数值,单位在程序里面拼接了k
*
* width:裁剪后的宽度 height：裁剪后的高度 xaxis：裁剪起始点横坐标 yaxis：裁剪起始点纵坐标
*/
public String videoTransfer(HashMap dto) {
// String ffmpeg_path,String input_path,String video_converted_path,String
// logo,String screen_size,String xaxis,String yaxis,String vb,String ab
List cmd = new ArrayList();
cmd.add("ffmpeg");
cmd.add("-i");
cmd.add(dto.get("input_path"));
cmd.add("-vf");
String width = dto.get("width");
String height = dto.get("height");
//String xaxis = dto.get("xaxis");
//String yaxis = dto.get("yaxis");
//xaxis = xaxis != null && !xaxis.equals("") ? xaxis : "0";
//yaxis = yaxis != null && !yaxis.equals("") ? yaxis : "0";
//String cropString = "crop=" + width + ":" + height + ":" + xaxis + ":" + yaxis;
//String cropString = "crop=" + xaxis + ":" + yaxis;
String cropString = "crop=" + width + ":" + height ;
cmd.add(cropString);
cmd.add(dto.get("video_converted_path"));
String converted_time = CmdExecuter.exec(cmd);
return returnSecond(converted_time);// 获取转换时间
}
public static void main(String[] arg) {
HashMap dto = new HashMap();
dto.put("ffmpeg_path", "E:\\lwl\\ffmpegUtil\\ffmpeg-20180714-c5329d6-win64-static\\bin\\ffmpeg.exe");// 必填
dto.put("input_path", "D:\\image\\a3.mp4");// 必填
//dto.put("width", "720");// 必填
//dto.put("height", "1280");
dto.put("width", "540");
dto.put("height", "796");
dto.put("video_converted_path", "D:\\image\\video\\b3.mp4");
String secondsString = new FFMPEG().videoTransfer(dto);
System.out.println("转换共用:" + secondsString + "秒");
}
}
VideoThumbTaker
package com.amigo.online.provider.manager.util.video.processing;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class VideoThumbTaker {
protected String ffmpegApp;
public VideoThumbTaker(String ffmpegApp)
{
this.ffmpegApp = ffmpegApp;
}
@SuppressWarnings("unused")
/****
* 获取指定时间内的图片
* @param videoFilename:视频路径
* @param thumbFilename:图片保存路径
* @param width:图片长
* @param height:图片宽
* @param hour:指定时
* @param min:指定分
* @param sec:指定秒
* @throws IOException
* @throws InterruptedException
*/
public void getThumb(String videoFilename, String thumbFilename, int width,
int height, int hour, int min, float sec) throws IOException,
InterruptedException
{
ProcessBuilder processBuilder = new ProcessBuilder(ffmpegApp, "-y",
"-i", videoFilename, "-vframes", "1", "-ss", hour + ":" + min
+ ":" + sec, "-f", "mjpeg", "-s", width + "*" + height,
"-an", thumbFilename);
Process process = processBuilder.start();
InputStream stderr = process.getErrorStream();
InputStreamReader isr = new InputStreamReader(stderr);
BufferedReader br = new BufferedReader(isr);
String line;
while ((line = br.readLine()) != null)
;
process.waitFor();
if(br != null)
br.close();
if(isr != null)
isr.close();
if(stderr != null)
stderr.close();
}
}