How do I `cv2.read()` two webcams at the same time?

[Goolge 0]

Two webcams were connected in the tinker edge.

`cv2.open()` works well for two webcams, but only one webcam can be read.

How do I `cv2.read()` two webcams at the same time?

[tooz 52]

hello @Goolge, 

please try multithreading 

reference: 

python - Capturing video from two cameras in OpenCV at once - Stack Overflow 

Python - Multithreaded Programming (tutorialspoint.com)

[Goolge 0]

@tooz 

Is there any other way to read two webcams in one code?

I'm using Tinker Edge R. This device cannot read more than one webcam.

Edited November 11, 2022 by Goolge

[tooz 52]

hello @Goolge,

try this .py:

https://www.asuswebstorage.com/navigate/a/#/s/845A267A0B6E4346BF90E84D32F8A8C84

--

import cv2

def main():
    cap = cv2.VideoCapture('/dev/video10', cv2.CAP_V4L2)
    cap1 = cv2.VideoCapture('/dev/video12', cv2.CAP_V4L2)

    while(True):
        ret, frame = cap.read()
        ret, frame1 = cap1.read()
        cv2.imshow('Camera 1', frame)
        cv2.imshow('Camera 2', frame1)
        if cv2.waitKey(1) & 0xFF == ord('q'):
            exit = True
            break

    cap.release()
    cv2.destroyAllWindows()

if __name__ == '__main__':
    main()