Writing AVI files in OpenCV

Question

There example on the net and code given in Learn OpenCv,Orielly.

After many attempts the out.avi file is written with 0 bytes. I wonder where i went wrong.

T

Answer 1

hey This code works in DevC++ try it:

  #include
  #include
  #include
  #include
  #include

  int main()
  {
  CvVideoWriter *writer = 0;
  int isColor = 1;
  int fps     = 5;  // or 30
  int frameW  = 1600; //640; // 744 for firewire cameras
  int frameH  = 1200; //480; // 480 for firewire cameras
  //writer=cvCreateVideoWriter("out.avi",CV_FOURCC('P','I','M','1'),
  //                           fps,cvSize(frameW,frameH),isColor);
  writer=cvCreateVideoWriter("out.avi",-1,
                       fps,cvSize(frameW,frameH),isColor);
  IplImage* img = 0; 

  img=cvLoadImage("CapturedFrame_0.jpg");
  cvWriteFrame(writer,img);      // add the frame to the file
  img=cvLoadImage("CapturedFrame_1.jpg");
  cvWriteFrame(writer,img);
  img=cvLoadImage("CapturedFrame_2.jpg");
  cvWriteFrame(writer,img);
  img=cvLoadImage("CapturedFrame_3.jpg");
  cvWriteFrame(writer,img);
  img=cvLoadImage("CapturedFrame_4.jpg");
  cvWriteFrame(writer,img);
  img=cvLoadImage("CapturedFrame_5.jpg");
  cvWriteFrame(writer,img);

  cvReleaseVideoWriter(&writer);
  return 0;
  }

I compiled it and ran it, works fine. (I did not see above whether you got your answer or not .. but for this particular thing I worked very hard earlier and suddenly I just did it, from some code snippets.)