Camera will not work in Skype in 10.8.5 I have a MacBook Air 13", bought about a month ago, running OS X 10.8.5. The camera is recorded in System Information as:

FaceTime HD Camera:

  Model ID:     Apple Camera VendorID_0x106B ProductID_0x1570
  Unique ID:    CC2332357XYF9T9CA


The camera worked in Skype very well until last night when I installed the latest upgrade from Apple. After that, the camera will not work in Skype although it works on PhotoBooth and iChat. In the preferences Skype declares that there is no camera. I reboot the system a few times. I unistalled and reinstalled Skype (the latest and some of the earlier versions). I performed SMC and PRAM and I fixed the permissions. I open Photo Booth while Skype was running. Nothing worked.

Any suggestions!
Apple issued a patch to go on top of the 10.8.5 update that didn't ship both a 32bit and 64 bit file that Skype, Apple's iMovie and other apps need to run the internal camera.

After some investigation, we have found that the OSX 10.8.5 update is missing a specific file that would allow some apps such as Skype or iMovie to access the built-in facetime camera on Mid-2013 MacBook Airs.
The 10.8.5 update updated a CoreMediaIO plugin that accesses the MBA camera, but didn't bundle the 32-bits version of it.

Source: Skype Community Post
Also, you can use an external camera in the mean time if you need to run on 10.8.5 and the affected Air.