opencv code

#include "cv.h"
#include "cxcore.h"
#include "highgui.h"
#include "math.h"
#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include <sstream>
using namespace std;
IplImage *src;
int main(){
    CvCapture* capture = cvCreateFileCapture("test.avi");
    double frameRate = 25.0;
    CvVideoWriter *vdowriter = cvCreateVideoWriter( "newtest.flv", CV_FOURCC('F', 'L', 'V', '1'), frameRate, cvSize(320,240) );
    if(!cvQueryFrame(capture)){ cout<<"Video capture failed, please check the camera."<<endl;}else{cout<<"Video camera capture status: OK"<<endl;};
    CvSize sz = cvGetSize(cvQueryFrame( capture));
    int in=0;
    while((src = cvQueryFrame(capture)) != NULL){
        cvWriteFrame(vdowriter,src);
            if( (cvWaitKey(40) & 255) == 27 && in==200 )
               break;
            in++;
    }
    cvReleaseVideoWriter(&vdowriter);
    cvReleaseCapture( &capture);
    return 0;
}