视频文件截图

版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

本文链接： https://blog.csdn.net/lyl0724/article/details/96438774

maven

<dependency>
	<groupId>org.bytedeco</groupId>
	<artifactId>javacv</artifactId>
	<version>1.3.1</version>
</dependency>
<dependency>
	<groupId>org.bytedeco</groupId>
	<artifactId>javacv-platform</artifactId>
	<version>1.3.1</version>
</dependency>

VideoUtil

import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.Frame;
import org.bytedeco.javacv.Java2DFrameConverter;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;

public class VideoUtil {
    private VideoUtil() {
    }

    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 > 48) && (f.image != null)) {
                break;
            }
            i++;
        }
        int owidth = f.imageWidth;
        int oheight = f.imageHeight;
        // 对截取的帧进行等比例缩放
        int width = 300;
        int height = (int) (((double) width / owidth) * oheight);
        Java2DFrameConverter converter = new Java2DFrameConverter();
        BufferedImage fecthedImage = converter.getBufferedImage(f);
        BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
        bi.getGraphics().drawImage(fecthedImage.getScaledInstance(width, height, Image.SCALE_SMOOTH),
                0, 0, null);
        ImageIO.write(bi, "jpg", targetFile);
        ff.stop();
        System.out.println("截取用时：" + (System.currentTimeMillis() - start) + " 毫秒");
    }
}

测试类

@org.junit.Test
public void test1() {
    try {
        VideoUtil.fetchFrame("D:\\work\\LgzWorkDir\\temp\\video\\封神演义-01.mkv"
                ,"D:\\work\\LgzWorkDir\\temp\\video\\test3.jpg");
    } catch (Exception e) {
        e.printStackTrace();
    }
}