My webcam driver is obsolete yet Webcamtests.com can access webcam regardless if I have webcam driver (a) or (b) .
(a) Genuine obsolete win 7 driver in win10, image is displayed correctly
(b) MS generic win 10 driver, image upside down
MS Camera App & Skype can access only if (b) with upside down image, yet Webcamtests no problem with either.