usb camera

Hai, i have laptop, Acer E1-471, few month ago while i use Yosemite, i can use my front camera, but when i upgrade into El Capitan, i can't use my front camera anymore, is this normal ?

Hi all, I wanted to know if there was a fix for this. My camera works out of the box, but the performance is very slow. There is slowness. The Intel HD4000 graphic acceleration is on, but the camera lags when recording with quicktime, or the FaceTime, and Photo Booth applications. I have...