What about doing the opposite — use the still image sensor and rapidly record images + audio to stitch a video together. Curious, as that might sound ridiculous

What about doing the opposite — use the still image sensor and rapidly record images + audio to stitch a video together. Curious, as that might sound ridiculous, but I wonder if the iPhone's camera is fast enough, in good light situations, to get reasonable video that would provide far more optimal stills. Also, are there reasons the app doesn't tap the slo-motion capability of the iPhone 5s (and 5 can do 60fps iirc)? I'd imagine you'd have crisper stills, but you would need to sift through a lot more of them :) and also they might be more grainy.