I'm making an application running multiple webcams/cameras. I cannot manage to detect the number of webcams I have with OpenCV to arrage a big display window with multiple sub webcams in it. Someone can help me this? I've searched openCV willowgarage but failed thanks

I don't think OpenCV provides any function to tell how many cameras are detected. An easy and cross-platform way is to call <code>VideoCapture::open()</code> in a loop with say 0 to 10, and in each iteration check if <code>VideoCapture::isOpened()</code> returns <code>true</code>. This way you know the index of the cameras and how many of them you've got.

Detect the number of webcams/cameras on PC with OpenCv

1 Answers

I don't think OpenCV provides any function to tell how many cameras are detected. An easy and cross-platform way is to call VideoCapture::open() in a loop with say 0 to 10, and in each iteration check if VideoCapture::isOpened() returns true. This way you know the index of the cameras and how many of them you've got.