How to count cameras in OpenCV 2.3?

Question

I want to get the number of available cameras.

I tried to count cameras like this:

for(int device = 0; device<10; device++) 
{
    VideoCapture ca         


        

Answer 1

Python 3.6:

import cv2

# Get the number of cameras available
def count_cameras():
    max_tested = 100
    for i in range(max_tested):
        temp_camera = cv2.VideoCapture(i)
        if temp_camera.isOpened():
            temp_camera.release()
            continue
        return i

print(count_cameras())