cvCreateCameraCapture returns null

Question

I\'ve got a webcam which is working perfectly in vlc, and is available as /dev/video0. However, whenever I use cvCreateCameraCapture, it returns null. I\'ve used 0,1,-1 as i

Answer 1

I'm using OpenCV 2.1 on Ubuntu 9.04 and this works fine:

CvCapture* capture = NULL;
if ((capture = cvCaptureFromCAM(-1)) == NULL)
{
    std::cerr << "!!! ERROR: cvCaptureFromCAM No camera found\n";
    return -1;
}

Note that I'm using cvCaptureFromCAM() instead of cvCreateCameraCapture().