OpenCv Grapvideo to jpg image

int main()
{
    CvCapture *capture;
    IplImage *frame;
	char AviFileName[]="G:\\movie.mkv";
        capture = cvCaptureFromAVI(AviFileName);
        //cvNamedWindow("AVI player",0);
	char name[100];
	int cnt =0 ; 
    while(true)
    {
        if(cvGrabFrame(capture))
        {
            
			frame=cvRetrieveFrame(capture);
            
			//cvShowImage("AVI player",frame);
			sprintf(name,"G:/outputFile/%d.jpg",cnt);
			if((cnt%200) == 0)
			SaveImg(name,frame);
			memset(name,0,100);
            if(cvWaitKey(10)>=0) 
				break;
			cnt++;
        }
        else
        {
            break;
        }
    }
    cvReleaseCapture(&capture);
    cvDestroyWindow("AVI player");
}

void printSub(int data[],int heigth, int width){

		for(int i = 0 ;i < heigth ;i++){
			for(int j = 0 ;j < width ;j++){
			printf("%d ",data[(i*width)+j]);
			}
			printf("\n");
		}
		printf("\n");

}

void SaveImg(char filename[],IplImage* img){

  // Write the image to a file with a different name
  if( !cvSaveImage(filename, img) )
  {
    fprintf(stderr, "failed to write image file\n");
  }

}

int openMyFile1(char *filename,double outData_norm[]) {

	
    FILE *file = fopen(filename, "w");

    if(!file) { 
        puts("cant read"); 
        return 1; 
    }
	//printf("%d\n",sizeof(outData)/sizeof(int));
	for(int i = 0 ; i < 10;i++){
			fprintf(file,"%f ",outData_norm[i]); 
	}

    fclose(file);
  
    return 0; 
}

int openMyFile(char *filename,double outData_norm[]) {

	
    FILE *file = fopen(filename, "w");

    if(!file) { 
        puts("cant read"); 
        return 1; 
    }
	//printf("%d\n",sizeof(outData)/sizeof(int));
	for(int i = 0 ; i < 512;i++){
		for(int j = 0 ; j < 512;j++){
			fprintf(file,"%f ",outData_norm[i*512+j]); 
		}
			fprintf(file,"\n");
	}

    fclose(file);
  
    return 0; 
}