java获取视频详细信息并截图做封面的两种实现方式

两种视频处理方式介绍

jave方式

Javacv的方式

两种视频处理方式介绍

一种jave获取视频信息，使用FFmpeg方式截取视频第n帧生成图片
- 需要下载一个ffmpeg.exe文件
一种是通过Javacv的方式获取视频信息和截图

jave方式

public static void main(String[] args) {String videoPath = "D:\\szw\\photo\\test\\55f9e02108b642.mp4";String ffmpegPath = "src/main/resources/libs/ffmpeg.exe";getVideoInfo(videoPath);processImg(videoPath, "1", ffmpegPath);
}

几种pom依赖

<dependency><groupId>it.sauronsoftware</groupId><artifactId>jave</artifactId><version>1.0.2</version>
</dependency><dependency><groupId>com.github.dadiyang</groupId><artifactId>jave</artifactId><version>1.0.2</version>
</dependency><!-- https://mvnrepository.com/artifact/ws.schild/jave-core -->
<dependency><groupId>ws.schild</groupId><artifactId>jave-core</artifactId><version>2.7.3</version>
</dependency>

VideoUtil：

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.nio.channels.FileChannel;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import it.sauronsoftware.jave.Encoder;
import org.apache.commons.lang.StringUtils;
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;/*** 视频工具类** @Author: szw* @Date: 2020/7/9 9:42*/
public class VideoUtil {private static final Logger LOGGER = LoggerFactory.getLogger(VideoUtil.class);/*** 通过jave方式获取视频信息* @param realPath 视频文件路径* @return Map<String, Object>*/public static Map<String, Object> getVideoInfo(String realPath) {FileInputStream fis;File source = new File(realPath);Encoder encoder = new Encoder();FileChannel fc = null;Map<String, Object> result = new HashMap<String, Object>();try {it.sauronsoftware.jave.MultimediaInfo m = encoder.getInfo(source);long ls = m.getDuration();LOGGER.debug("此视频时长为:" + ls / 60000 + "分" + (ls) / 1000 + "秒！");// 视频帧宽高LOGGER.debug("此视频高度为:" + m.getVideo().getSize().getHeight());LOGGER.debug("此视频宽度为:" + m.getVideo().getSize().getWidth());LOGGER.debug("此视频格式为:" + m.getFormat());result.put("videoHigh", m.getVideo().getSize().getHeight());result.put("videoWide", m.getVideo().getSize().getWidth());result.put("format", m.getFormat());fis = new FileInputStream(source);fc = fis.getChannel();BigDecimal fileSize = new BigDecimal(fc.size());String size = fileSize.divide(new BigDecimal(1048576), 2, RoundingMode.HALF_UP) + "MB";LOGGER.debug("此视频大小为" + size);result.put("size", size);return result;} catch (Exception e) {e.printStackTrace();return result;} finally {if (null != fc) {try {fc.close();} catch (IOException e) {e.printStackTrace();}}}}/*** 使用 FFmpeg 截取视频第几帧生成图片** @param videoPath 视频路径* @param frame     第几帧* @param utilPath  工具包地址* @return String    图片的相对路劲*/public static String processImg(String videoPath, String frame, String utilPath) {File file = new File(videoPath);if (!file.exists()) {System.err.println("路径[" + videoPath + "]对应的视频文件不存在!");return null;}List<String> commands = new java.util.ArrayList<String>();commands.add(utilPath);commands.add("-i");commands.add(videoPath);commands.add("-y");commands.add("-f");commands.add("image2");commands.add("-ss");commands.add(frame);    // 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("800x1200"); // 宽X高String imgPath = videoPath.substring(0, videoPath.lastIndexOf(".")) + "-cover" + ".jpg";commands.add(imgPath);try {ProcessBuilder builder = new ProcessBuilder();builder.command(commands);builder.redirectErrorStream(true);LOGGER.debug("视频截图开始...");Process process = builder.start();InputStream in = process.getInputStream();// 写入本地FileUtil.writeToLocal(imgPath, in);LOGGER.debug("截取成功");return imgPath;} catch (Exception e) {e.printStackTrace();return null;}}
}

Javacv的方式

JavaCV是一个计算机视觉领域的封装库，封装了包括 OpenCV，FFmpeg 等
GitHub： https://github.com/bytedeco/javacv
OpenCV 的文档地址： https://docs.opencv.org/master

public static void main(String[] args) {String videoPath = "D:\\szw\\photo\\test\\55f9e02108b642.mp4";Map<String, Object> screenshot = getScreenshot(videoPath);System.out.println(screenshot);
}

pom依赖,我的后来版本改到1.5.3了
```
<version>1.5.3</version>
```

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

VideoUtil


import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.nio.channels.FileChannel;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import it.sauronsoftware.jave.Encoder;
import org.apache.commons.lang.StringUtils;
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;/*** 视频工具类** @Author: szw* @Date: 2020/7/9 9:42*/
public class VideoUtil {private static final Logger LOGGER = LoggerFactory.getLogger(VideoUtil.class);/*** 通过Javacv的方式获取视频截图** @param filePath 视频文件路径* @return Map<String, Object>*/public static Map<String, Object> getScreenshot(String filePath) {try {LOGGER.debug("截取视频截图开始：" + System.currentTimeMillis());Map<String, Object> result = new HashMap<String, Object>();FFmpegFrameGrabber grabber = FFmpegFrameGrabber.createDefault(filePath);// 第一帧图片存储位置String targerFilePath = filePath.substring(0, filePath.lastIndexOf("\\"));// 视频文件名String fileName = filePath.substring(filePath.lastIndexOf("\\") + 1);// 图片名称String targetFileName = fileName.substring(0, fileName.lastIndexOf("."));LOGGER.debug("视频路径是：" + targerFilePath);LOGGER.debug("视频文件名：" + fileName);LOGGER.debug("图片名称是：" + targetFileName);grabber.start();//设置视频截取帧（默认取第一帧）Frame frame = grabber.grabImage();//视频旋转度String rotate = grabber.getVideoMetadata("rotate");Java2DFrameConverter converter = new Java2DFrameConverter();//绘制图片BufferedImage bi = converter.getBufferedImage(frame);if (rotate != null) {// 旋转图片bi = rotate(bi, Integer.parseInt(rotate));}//图片的类型String imageMat = "jpg";//图片的完整路径String imagePath = targerFilePath + File.separator + targetFileName + "." + imageMat;//创建文件File output = new File(imagePath);ImageIO.write(bi, imageMat, output);//拼接Map信息result.put("videoWide", bi.getWidth());result.put("videoHigh", bi.getHeight());long duration = grabber.getLengthInTime() / (1000 * 1000);result.put("rotate", StringUtils.isBlank(rotate) ? "0" : rotate);result.put("format", grabber.getFormat());result.put("imgPath", output.getPath());result.put("time", duration);LOGGER.debug("视频的宽:" + bi.getWidth());LOGGER.debug("视频的高:" + bi.getHeight());LOGGER.debug("视频的旋转度：" + rotate);LOGGER.debug("视频的格式：" + grabber.getFormat());LOGGER.debug("此视频时长（s/秒）：" + duration);grabber.stop();LOGGER.debug("截取视频截图结束：" + System.currentTimeMillis());return result;} catch (Exception e) {LOGGER.error("VideoUtil getScreenshot fail: {}", ExceptionStackTrace.printStackTrace(e));return null;}}/*** 根据视频旋转度来调整图片** @param src   BufferedImage* @param angel angel   视频旋转度* @return BufferedImage*/public static BufferedImage rotate(BufferedImage src, int angel) {int src_width = src.getWidth(null);int src_height = src.getHeight(null);int type = src.getColorModel().getTransparency();Rectangle rect_des = calcRotatedSize(new Rectangle(new Dimension(src_width, src_height)), angel);BufferedImage bi = new BufferedImage(rect_des.width, rect_des.height, type);Graphics2D g2 = bi.createGraphics();g2.translate((rect_des.width - src_width) / 2, (rect_des.height - src_height) / 2);g2.rotate(Math.toRadians(angel), src_width / 2, src_height / 2);g2.drawImage(src, 0, 0, null);g2.dispose();return bi;}/*** 计算图片旋转大小** @param src   Rectangle* @param angel int* @return Rectangle*/public static Rectangle calcRotatedSize(Rectangle src, int angel) {if (angel >= 90) {if (angel / 90 % 2 == 1) {int temp = src.height;src.height = src.width;src.width = temp;}angel = angel % 90;}double r = Math.sqrt(src.height * src.height + src.width * src.width) / 2;double len = 2 * Math.sin(Math.toRadians(angel) / 2) * r;double angel_alpha = (Math.PI - Math.toRadians(angel)) / 2;double angel_dalta_width = Math.atan((double) src.height / src.width);double angel_dalta_height = Math.atan((double) src.width / src.height);int len_dalta_width = (int) (len * Math.cos(Math.PI - angel_alpha - angel_dalta_width));int len_dalta_height = (int) (len * Math.cos(Math.PI - angel_alpha - angel_dalta_height));int des_width = src.width + len_dalta_width * 2;int des_height = src.height + len_dalta_height * 2;return new java.awt.Rectangle(new Dimension(des_width, des_height));}
}

问题解决

main方法测试没问题，项目运行后报系统找不到指定的文件，（虽然能运行但一堆报错看着也不舒服）

java.io.FileNotFoundException: D:\szw\repository\org\bytedeco\tesseract-platform\4.1.1-1.5.3\tesseract-windows-x86_64.jar (系统找不到指定的文件。)

参考这篇：BUG记录-找不到jaxb相关jar包https://blog.csdn.net/qq_44695727/article/details/106296294

找到报错jar位置，解压(没有打jar包软件用360压缩打开) -> META-INF -> MANIFEST.MF ->打开文件找到Class-Path 删除 ->再打包回jar

重新运行

报错jar修改后就正常了

也可以下载我删减好的->0积分免费下载

javaCV所有相关jar删减完成版：https://download.csdn.net/download/qq_44695727/12597497

javaCV所有相关jar未删减版：https://download.csdn.net/download/qq_44695727/12596763