java利用javacv和ffmpeg截取视频提取视频封面生成缩略图,精减引用包

<artifactId>ffmpeg</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>javacpp</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>libfreenect</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>libdc1394</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
i++;
}
// 截取的帧图片
Java2DFrameConverter converter = new Java2DFrameConverter();
BufferedImage srcImage = converter.getBufferedImage(frame);
<artifactId>librealsense</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
ImageIO.write(thumbnailImage, "jpg", picFile);
ff.stop();
} catch (IOException e) {
e.printStackTrace();
<artifactId>flycapture</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
File video = new File(videoPath);
String picPath = "d:\\video.jpg";
getVideoPic(video, picPath);
long duration = getVideoDuration(video);
<artifactId>openblas</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<version>1.5.2</version>
</dependency>
结果引用了一大堆包，超过500M，我特意花了不少时间，进行了精减，正确的maven引用如下：
<!-- 视频操作引用包 begin -->
<dependency>
<groupId>org.bytedeco</groupId>
thumbnailImage.getGraphics().drawImage(srcImage.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);
File picFile = new File(picPath);
<artifactId>libfreenect2</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
public class VideoUtil {
static Logger log = LoggerFactory.getLogger(VideoUtil.class);
/**
* 获取视频时长，单位为秒
*
* @param video 源视频文件
* @return 时长（s）
*/
public static Long getVideoDuration(File video) {
Long duration = 0L;
<artifactId>librealsense2</artifactId>
</exclusion>
<exclusion>
FFmpegFrameGrabber ff = new FFmpegFrameGrabber(video);
try {
ff.start();
duration = ff.getLengthInTime() / (1000 * 1000);
java利用javacv和ffmpeg截取视频提取视频封面，精减引用包
废话少说，直接上代码：
package mons.util;
import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.FrameGrabber;
}
}
public static void main(String[] args) {
String videoPath ="d:\\111.mp4";
// String audioPath = "d:\\20200222_161159.m4a";
import org.bytedeco.javacv.Java2DFrameConverter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.imageio.ImageIO;
import java.awt.*;
int height = (int) (((double) width / srcImageWidth) * srcImageHeight);
BufferedImage thumbnailImage = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
FFmpegFrameGrabber ff = new FFmpegFrameGrabber(video);
try {
ff.start();
// 截取中间帧图片(具体依实际情况而定)
int i = 0;
* 截取视频获得指定帧的图片
*
* @param video 源视频文件
* @param picPath 截图存放路径
*/
public static void getVideoPic(File video, String picPath) {
int length = ff.getLengthInFrames();
int middleFrame = length / 2;
org.bytedeco.javacv.Frame frame = null;
while (i < length) {
int srcImageWidth = srcImage.getWidth();
int srcImageHeight = srcImage.getHeight();
// 对截图进行等比例缩放(缩略图)
int width = 480;
frame = ff.grabFrame();
if ((i > middleFrame) && (frame.image != null)) {
break;
}
<artifactId>opencv</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
ff.stop();
} catch (FrameGrabber.Exception e) {
e.printStackTrace();
}
return duration;
}
/**
System.out.println("videoDuration = " + duration);
}
}
网上一般说，maven引用如下：
<dependency>
<groupId>org.bytedeco</groupId>