OpenCV video example

video.cpp

#include <stdio.h>
#include <opencv\cv.h>
#include <opencv\cxcore.h>
#include <opencv\highgui.h>

int main()
{
  IplImage* pFrame = NULL;  
  IplImage* pFrameNew = NULL;

  CvCapture* pCapture = NULL; 
  CvVideoWriter* pWriter = NULL; 

  int nFrmNum = 0;

  cvNamedWindow("Video", 1);
  cvNamedWindow("Process", 1);
 
  cvMoveWindow("Video", 30, 0);
  cvMoveWindow("Process", 360, 0);

  if( !(pCapture = cvCaptureFromFile("video.avi")) )
	   printf("Video Capture Wrong!\n");

   int fps=cvGetCaptureProperty(pCapture,CV_CAP_PROP_FPS);
   int width=cvGetCaptureProperty(pCapture,CV_CAP_PROP_FRAME_WIDTH);
   int height=cvGetCaptureProperty(pCapture,CV_CAP_PROP_FRAME_HEIGHT);
   int count=cvGetCaptureProperty(pCapture,CV_CAP_PROP_FRAME_COUNT);
   printf("%d X %d, %d FPS, %d frames!\n",width,height,fps,count);

   if(!(pWriter = cvCreateVideoWriter("Save.avi", -1, 40, cvSize(width,height), 1)) )
     printf("Video Writer Wrong!\n");

   pFrameNew=cvCreateImage(cvSize(width,height),IPL_DEPTH_8U,3);
   
  
  while(pFrame = cvQueryFrame( pCapture ))
  {
	  nFrmNum++;
	  cvShowImage("Video", pFrame);
      
	  cvSmooth(pFrame, pFrameNew, CV_GAUSSIAN, 9, 0, 0);

	  cvShowImage("Process", pFrameNew);
	  
	  cvWriteFrame(pWriter, pFrameNew);

	  cvWaitKey(10);
  }

  cvWaitKey();

  cvDestroyWindow("Video");
  cvDestroyWindow("Process");

  cvReleaseImage(&pFrameNew);
  cvReleaseVideoWriter(&pWriter);
  cvReleaseImage(&pFrame);  
  cvReleaseCapture(&pCapture);
  return 0;
}