1、导入依赖

<dependency>

<groupId>org.bytedeco</groupId>

<artifactId> Java cv</artifactId>

<version>0.8</version>

</dependency>

2、示例

package com.zemel.video;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java. io . File ;

import javax.imageio.ImageIO;

import org.bytedeco.javacpp.opencv_core.IplImage;

import org.bytedeco.javacv.FFmpegFrameGrabber;

import org.bytedeco.javacv.Frame;

public class Test {

/**

* 获取指定视频的帧并保存为图片至指定目录

* @param videofile 源视频文件路径

* @param framefile 截取帧的图片存放路径

* @throws Exception

*/

public static void fetchFrame(String videofile, String framefile)

throws Exception {

long start = System.currentTimeMillis();

File targetFile = new File(framefile);

FFmpegFrameGrabber ff = new FFmpegFrameGrabber(videofile);

ff.start();

int lenght = ff.getLengthInFrames();

int i = 0;

Frame f = null;

while (i < lenght) {

// 过滤前15帧，避免出现全黑的图片，依自己情况而定

f = ff.grabFrame();

if ((i > 15) && (f.image != null)) {

break;

}

i++;

}

IplImage img = f.image;

int owidth = img.width();

int oheight = img.height();

// 对截取的帧进行等比例缩放

int width = 800;

int height = (int) ((( double ) width / owidth) * oheight);

BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);

bi.getGraphics().drawImage(f.image.getBufferedImage().getScaledInstance(width, height, Image.SCALE_SMOOTH),

0, 0, null);

ImageIO.write(bi, ” jpg “, targetFile);

//ff.flush();

ff.stop();

System.out.println(System.currentTimeMillis() – start);

}

public static void main(String[] args) {

try {

Test.fetchFrame(“D:\\biudata\\vedio\\1523598768844GFE2GWDDM8.mp4”, “D:\\biudata\\vedio\\test5.jpg”);

} catch (Exception e) {

e.printStackTrace();

}

}

}