Thats what I was trying to say, you CAN use it in video mode. It will still record a 1080 or 720 file with the crop mode on, It just seems to make the image softer. I will do a little test to see whats actually going on, but I can already see that the 2x crop mode is "usable"- whatever that means.
Oh that's cool... As long as it's not simply 'zooming' the original stream (effectively what you could simply do in post).
It may be more complex than our impression though.. The video mode may be 'debayering' on many levels to get the most out of the IQ rather than simply utilizing a single pixel in a quadrant where the still mode uses all of them... just a thought.