I have a hunch this is going to become more frequent for me. I've reached my tiring point. Taking 15 seconds of my time just so I can decide if I want to skip through the video to find 5 seconds of interesting content is just not acceptable. Video content is not that special. Would you sit through a 15-second flash ad to see an article? Me neither.
Honestly, ads are so invasive and easy to block that I'm surprised they work at all. I can't wait until Microsoft realizes they don't make money from ads and starts shipping an adblocker with Windows :)
I think that, for things like this, the videos should be either inline, or as a commercial, interrupt halfway through or so. I'm betting that would considerably minimize bounce.
(1) robustness to lighting conditions
(2) recognition of continuous shapes, such as hats (captured well in )
(3) avoiding stipple effect on facial features (e.g. lips, eyes)
I'm not saying it's impossible, just that I haven't been clever enough to encode it correctly. :)
Some WSJ artists: