Hmmm actually, I may have over simplified (or just be wrong or maybe partially wrong 🙂 ) what I said up there. I thought that the GoPro, for instance, used an iris to control exposure but turns out it uses shutter speed. So in low light conditions (where a faster shutter speed is required) the rolling shutter effect is less noticeable. I would guess the contour works in a similar manner but trying to find more info at the moment.
I say over simplified as if you were using a DSLR where you have control over all the settings then its generally considered that you use a shutter speed of roughly double your frame rate. So 30fps would be 1/60th and 60fps would be 1/125th. I’m guessing there might be something like this going on in these sports cams as well, and then a further modification to shutter speed for exposure?
Still don’t think its memory card related though, I would have thought that the data corruption or loss that unsponsored mentions in his article would give picture break up, like when you can’t tune your digital TV properly a opposed to wobble.