title: Error opening file (/home/vaibhav/opencv/modules/highgui/src/cap_ffmpeg_impl.hpp:553) in openCV
body: <p>I am using OpenCV to display a video 
  my code is as</p>
  
  <pre><code>#include&lt;opencv2/highgui.hpp&gt;
  #include&lt;cv.h&gt;
  #include&lt;opencv/cv.hpp&gt;
  #include&lt;opencv2/opencv.hpp&gt;
  #include&lt;cvaux.h&gt;
  #include&lt;cxcore.h&gt;
  #include&lt;stdio.h&gt;
  #include&lt;highgui.h&gt;
  #include&lt;stdlib.h&gt;
  #include &lt;opencv2/core/core.hpp&gt;
  #include &lt;opencv2/highgui/highgui.hpp&gt;
  #include &lt;iostream&gt;
  
  using namespace cv;
  int main( int argc, char ** argv )
  {
  CvCapture* capture;
  cvNamedWindow( "video", CV_WINDOW_AUTOSIZE ); 
  capture = cvCreateFileCapture("/home/vaibhav/program/c/w.avi");
  IplImage* frame;
  while(1){
  frame = cvQueryFrame( capture );
  if( !frame ) break;
  cvShowImage( "video", frame );
  char c = cvWaitKey(33);
  if( c == 27 ) break;
  }
  
  cvReleaseCapture( &amp;capture );
  
  cvDestroyWindow( "Webcam" );
  
  return 0; }
  </code></pre>
  
  <p>The program compiles but it gives error when try to run it</p>
  
  <p>I am using Ubuntu 12.04 and Eclipse</p>
  
  <pre><code>warning: Error opening file (/home/vaibhav/opencv/modules/highgui/src/cap_ffmpeg_impl.hpp:553)
  </code></pre>