JavaCV实现将视频以帧方式抽取

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

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

import static org.bytedeco.javacpp.opencv_core.IplImage;
import static org.bytedeco.javacpp.opencv_core.cvReleaseImage;
import static org.bytedeco.javacpp.opencv_imgcodecs.cvLoadImage;
import static org.bytedeco.javacpp.opencv_imgcodecs.cvSaveImage;
import static org.bytedeco.javacpp.opencv_imgproc.cvSmooth;

public class JavaCV {

  // the image's path;
  final static String imagePath = "/home/lance/abc.jpg/";
  // the vedio's path and filename;
  final static String vedioPath = "/home/lance/target-a/";
  final static String vediOname= "origin-a.mp4";


  public static void main(String[] args) throws Exception {
    smooth(imagePath);
    grabberFFmpegImage(vedioPath + vedioName, vedioPath
        , vedioName, 30);
  }

  // the method of compress image;
  public static void smooth(String fileName) {
    IplImage iplImage = cvLoadImage(fileName);
    if (iplImage != null) {
      cvSmooth(iplImage, iplImage);
      cvSaveImage(fileName, iplImage);
      cvReleaseImage(iplImage);
    }
  }

  // grab ffmpegImage from vedio;
  public static void grabberFFmpegImage(String filePath, String fileTargetPath
      , String fileTargetName, int grabSize) throws Exception{
    FFmpegFrameGrabber ff = FFmpegFrameGrabber.createDefault(filePath);
    ff.start();
    for (int i = 0; i