1.pom依赖

org.bytedeco.javacpp-presets

opencv-platform

3.4.1-1.4.1

org.bytedeco

javacpp

1.4.1

org.bytedeco

javacv

1.4.1

org.bytedeco.javacpp-presets

opencv-platform

3.4.1-1.4.1

org.bytedeco.javacpp-presets

ffmpeg-platform

3.4.2-1.4.1

2.代码

package com.example.controller;

import org.bytedeco.javacv.FFmpegFrameGrabber;

import org.bytedeco.javacv.Frame;

import org.bytedeco.javacv.Java2DFrameConverter;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

import java.awt.image.RenderedImage;

import java.io.File;

/**

* @description: 获取视频帧，生成图片

* @author zyb

* @date 2020-07-12

*/

public class VideoController {

public static final Logger log = LoggerFactory.getLogger(VideoController.class);

/**

* 获取视频第一帧

* @param videoPath 视频地址

* @param imgPath 生成图片的名字(包含全路径)

* @throws Exception

*/

public static void getVideoPicture(String videoPath,String imgPath) throws Exception{

File imgFile = new File(imgPath);

//判断保存的文件的文件夹是否存在，不存在创建。

if (!imgFile.getParentFile().exists()) {

log.info("保存文件的文件夹不存在，创建。");

imgFile.getParentFile().mkdirs();

}

File videoFile = new File(videoPath);

if (videoFile.exists()) {

log.info("视频存在：{}",videoFile);

//实例化“截取视频首帧”对象

FFmpegFrameGrabber ff = new FFmpegFrameGrabber(videoFile);

ff.start();

int ftp = ff.getLengthInFrames();

int flag=0;

Frame frame = null;

while (flag <= ftp) {

//获取帧

frame = ff.grabImage();

//过滤前1帧，避免出现全黑图片

if ((flag>1)&&(frame != null)) {

break;

}

flag++;

}

ImageIO.write(frameToBufferedImage(frame), "jpg", imgFile);

ff.close();

ff.stop();

}else {

log.info("视频不存在：{}",videoFile);

}

}

/**

* 帧转为流

* @param frame

* @return

*/

private static RenderedImage frameToBufferedImage(Frame frame) {

//创建BufferedImage对象

Java2DFrameConverter converter = new Java2DFrameConverter();

BufferedImage bufferedImage = converter.getBufferedImage(frame);

return bufferedImage;

}

public static void main(String[] args) {

try {

String videoPath = "F:\\video\\视频123.mp4";

String imgPath = "F:\\图片123.jpg";

getVideoPicture(videoPath,imgPath);

} catch (Exception e) {

e.printStackTrace();

}

}

}