java获取视频第一帧

布满荆棘的人生 2021-12-05 20:04 430阅读 0赞

<dependency>
       <groupId>org.bytedeco</groupId>
       <artifactId>javacv</artifactId>
       <version>1.5.1</version>
    </dependency>
    
    <dependency>
       <groupId>org.bytedeco</groupId>
       <artifactId>javacv-platform</artifactId>
       <version>1.5.1</version>
    </dependency>

import org.bytedeco.javacv.FFmpegFrameGrabber;
    import org.bytedeco.javacv.Frame;
    import org.bytedeco.javacv.Java2DFrameConverter;
    import org.bytedeco.javacv.OpenCVFrameConverter;
    import org.bytedeco.opencv.global.opencv_core;
    import org.bytedeco.opencv.opencv_core.IplImage;
    
    import javax.imageio.ImageIO;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;
    
    /** @Author: laogao @Date: 2019/7/17 13:52 */
    public class VideoProcessing {
    
      /**
       * @param file 视频路径
       * @param targerFilePath 第一帧图片存储位置
       * @param targetFileName 图片名称
       * @throws Exception
       */
      public static void randomGrabberFFmpegImage(
          File file) throws Exception {
    
        FFmpegFrameGrabber ff = FFmpegFrameGrabber.createDefault(file);
        ff.start();
        String rotate = ff.getVideoMetadata("rotate");
        Frame f;
        int i = 0;
        while (i < 1) {
          f = ff.grabImage();
          IplImage src = null;
          if (null != rotate && rotate.length() > 1) {
            OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();
            src = converter.convert(f);
            f = converter.convert(rotate(src, Integer.valueOf(rotate)));
          }
          doExecuteFrame(f, "C:\\Users\\Administrator\\Desktop\\aa", "123");
          i++;
        }
    
        ff.stop();
      }
    
      /*
       * 旋转角度的
       */
      public static IplImage rotate(IplImage src, int angle) {
        IplImage img = IplImage.create(src.height(), src.width(), src.depth(), src.nChannels());
        opencv_core.cvTranspose(src, img);
        opencv_core.cvFlip(img, img, angle);
        return img;
      }
    
      public static void doExecuteFrame(Frame f, String targerFilePath, String targetFileName) {
    
        if (null == f || null == f.image) {
          return;
        }
        Java2DFrameConverter converter = new Java2DFrameConverter();
        String imageMat = "jpg";
        String FileName = targerFilePath + File.separator + targetFileName + "." + imageMat;
        BufferedImage bi = converter.getBufferedImage(f);
        System.out.println("width:" + bi.getWidth());
        System.out.println("height:" + bi.getHeight());
        File output = new File(FileName);
        try {
          ImageIO.write(bi, imageMat, output);
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    }