Getting minute, subpixel movements can ironically give you MORE resolution if you process it over time, though you'd probably need some sort of "anchor" points
I think the irony being implied is that normally when you're shooting video and your camera is jittering, you're effectively losing resolution compared to a static camera because of motion blur, whereas this depth mapping benefits from minute movements. Though looking at individual frames of video is different than combining them into a single sharper image, I get the counterintuitive feeling they were driving at.