I've seen this on my Mac with its inbuilt webcam. It annoys me intensely because when it switches it usually results in unwatchable video for a period of time b

I've seen this on my Mac with its inbuilt webcam. It annoys me intensely because when it switches it usually results in unwatchable video for a period of time before it stabilises, then it suddenly realises it has enough bandwidth and switches back, and that is followed by another period of disruption. Good idea in principle but needs refinement. Since someone reading this might know, does anyone have any recommendations for webcams for OS X? The Logitech C920 seems to be the most modern HD webcam out there, but the Internet is conflicted on whether Mac's in-built UVC drivers will properly take advantage of it in FaceTime or not or if it will just be seen as an SD camera. So if anyone has any personal experiences with good HD webcams on OS X I'd be very interested to hear... Edit: Actually, a "weekend project" I never got around to was to use OpenCV to detect faces and automatically encode just those regions with a higher bitrate, and sacrifice the rest. So that the areas we actually care about are encoded better and we can get an objectively better image for the same average bitrate. I'm sure someone must have done this already, though I couldn't find anything when I looked.