I don't mean to jump in if this isn't the correct way to treat this site but, I am having the same problem. When I go to tools, video setting, mine just shows a little circle going round and round and nothing ever happens.
had the same problem. I uninstalled Skype and then downloaded version 18.104.22.168 and now everything works again. You can download this version from the link below.
Skype support has been unresponsive. Very disappointed because it seems many people have run into this problem.