No webcams found when running CameraCalibrationAssisted

[inviolablegenesis]

Hi, I downloaded the applications jar from the website and tried to execute Assisted Calibration.
But it says "no webcams found".

I just need to check this example using my webcam but it won't detect my webcams.
I'm using Mac OS Big Sur.

I checked other apps that uses the camera (e.g. facetime) and my camera is just working fine.
I wonder what's the problem with the example applications.jar.

Please advise. Thank you so much in advance!

[lessthanoptimal]

Probably an issue with the library WebcamCapture. Know how to program simple Java applications? We can test that theory.

[MrStahlfelge]

webcam-capture and its dependencies don't work on MacOS any more with the used dependencies here, need to change it like used in this project: https://github.com/craigraw/webcam-tester

Unfortunately, while the tester works for me, I am getting a crash with boofcv. Still need to investigate