Unable to read video in opencv

Question

I am trying to read video file, but its throwing error. The code is:

#include <iostream>
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <opencv2/opencv.hpp>
using namespace cv;
int main(int argc, char* argv[])
{
    Mat inputVideo;
    Mat frame;
    Mat HSV;
    Mat tracking;
    char checkKey;
    VideoCapture capture;
    capture.open("video/input.mp4");
    capture.set(CV_CAP_PROP_FRAME_WIDTH, 640);
    capture.set(CV_CAP_PROP_FRAME_HEIGHT,480);      
    namedWindow("Original Video", WINDOW_AUTOSIZE );
    while(1){
        capture.read(inputVideo);
        if (!inputVideo.empty())
        {
            imshow("Original Video",inputVideo);

        }
        waitKey(20);

    }
    return 0;
 }

On running this code, the error I am getting is:

Unable to stop the stream: Inappropriate ioctl for device

(video_reading:3459): GLib-GObject-CRITICAL **: g_object_set: assertion 'G_IS_OBJECT (object)' failed

I tried looking for solutions, but i did not get it. Can some one help me in solving this error.

Answer 1

I made little changes in your code. Try this:

#include <iostream>
#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <opencv2/opencv.hpp>
using namespace cv;
int main(int argc, char* argv[])
{
    Mat inputVideo;
    Mat frame;
    Mat HSV;
    Mat tracking;
    char checkKey;
    VideoCapture capture;
    capture.open("video/input.mp4");
    capture.set(CV_CAP_PROP_FRAME_WIDTH, 640);
    capture.set(CV_CAP_PROP_FRAME_HEIGHT, 480);
    namedWindow("Original Video", WINDOW_AUTOSIZE);
    while (1) {
        capture >> inputVideo;
        if (inputVideo.empty())
            break;
        imshow("Original Video", inputVideo);
        waitKey(1);
    }
    capture.release();
    return 0;
}