OpenCV2.2 with Visual Studio 2008

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I am very new to OpenCV. I downloaded and installed Open CV according to the instructions in the link https://rangadabarera.wordpress.com/o... . My requirement is to create a video library that can be used to replace the existing video library that uses Video For Windows(VFW). I am trying to write a sample code to open and read an avi file. I added the following libraries "opencv_core220.lib opencv_highgui220.lib opencv_video220.lib opencv_ffmpeg220.lib". The code i have written looks like as follows

#include <iostream>

#include "opencv2/opencv.hpp"
#include "opencv2/highgui/highgui_c.h"
#include "opencv2/highgui/highgui.hpp"
using namespace std;
using namespace cv;
int main()
{
    string filename ("C:\\ADAS_AHBC_201046_002.avi") ; 

    VideoCapture input;
    bool status = input.open( filename );
    if (!input.isOpened()) return 0;
    int frameCount = input.get(CV_CAP_PROP_FRAME_COUNT);
}

But while running the code, i am getting an exception with the following text Unhandled exception at 0x00905a4d in aviread.exe: 0xC0000005: Access violation. The value of the obj and referance count fields within the VideoCapture object seems to be 0

I tried another version like as follows and the output is the same

int main()
{
    string filename ("C:\\ADAS_AHBC_201046_002.avi") ; 

    VideoCapture input = VideoCapture( filename );
    //bool status = input.open( filename );
    if (!input.isOpened()) return 0;
    int frameCount = input.get(CV_CAP_PROP_FRAME_COUNT);
}

But when i tried to to read from a camera, it seems like not throwing any error. The code is as follows int main() { string filename ("C:\ADAS_AHBC_201046_002.avi") ;

    VideoCapture input = VideoCapture( 0 );
    //bool status = input.open( filename );
    if (!input.isOpened()) return 0;
    int frameCount = input.get(CV_CAP_PROP_FRAME_COUNT);
}

While debugging this code, my lap's camera is getting invoked. Can you please help me understand as what is wrong with what i am doing.

Thanks AJAI