方法一：使用第三方jar包截取

1、导入依赖

[XML] 纯文本查看 复制代码

<dependency>
      <groupId>org.bytedeco</groupId>
        <artifactId>javacv</artifactId>
        <version>0.8</version>
    </dependency>

2、示例

[Java] 纯文本查看 复制代码

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5帧，避免出现全黑的图片，依自己情况而定
                f = ff.grabFrame();
                if ((i > 5) && (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();
            }
        }
}

方法二：使用ffmpeg
1、下载ffmpeg工具(http://ffmpeg.org/)

2、代码

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public static boolean processImg(String veido_path, String ffmpeg_path) {
File file = new File(veido_path);
if (!file.exists()) {
System.err.println("路径[" + veido_path + "]对应的视频文件不存在!");
return false;
}
List<String> commands = new java.util.ArrayList<String>();
commands.add(ffmpeg_path);
commands.add("-i");
commands.add(veido_path);
commands.add("-y");
commands.add("-f");
commands.add("image2");
commands.add("-ss");
commands.add("8");// 这个参数是设置截取视频多少秒时的画面
// commands.add("-t");
// commands.add("0.001");
commands.add("-s");
commands.add("700x525");
commands.add(veido_path.substring(0, veido_path.lastIndexOf("."))
.replaceFirst("vedio", "file") + ".jpg");
try {
ProcessBuilder builder = new ProcessBuilder();
builder.command(commands);
builder.start();
System.out.println("截取成功");
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
public static void main(String[] args) {
processImg("D:\\biudata\\vedio\\15235879054813G0I1783E2.mp4",
"F:\\开发工具\\ffmpeg.exe");
}

奈斯