I have found the rather strange behavior of the HD FaceTime camera at MacBook Pro 15" Retina with OS X Sierra and Parallels Desktop 12. Camera works perfectly with Face Time, Photo Booth and Skype if PD 12 does not launched. But when PD 12 is started (even without loading any VM) the HD FaceTime camera stops to work. It can be available only after restart of the OS X (without PD12). Could you help me to fix the problem? Thanks in advance.