java videowriter test

import org.opencv.core.*;
import org.opencv.imgproc.*;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.videoio.*;

class SimpleSample {
    static{ System.loadLibrary(Core.NATIVE_LIBRARY_NAME); }

    //~ static int fcc(char a, char b, char c, char d) {
        //~ return (d<<24 | c<<16 | b<<8 | a);
    //~ }

    public static void main(String[] args) {
        Mat frame = new Mat(480,640,CvType.CV_8UC3,Scalar.all(127)); 
        int fourcc = VideoWriter.fourcc('m','j','p','g');        
        VideoWriter writer = new VideoWriter("my.avi", fourcc, 20, frame.size(), true);
        if (!writer.isOpened()) {
            System.out.println("bummer!");
            return;
        }
        for (int i=0; i<100; i++) {
            Mat f = frame.clone();
            Imgproc.putText(f, ("frame" + i), new Point(100,100), Core.FONT_HERSHEY_PLAIN, 2, new Scalar(200,0,0),3);
            writer.write(f);
        }
    }
}