>>3121244w-well, i also did that with 50d. please don't judge, it's ironic™
But interesting thing is, some of those scenes were shot on 300mm macro lens stopped to over f/5.6, and while i took some actions for scene to be somehow illuminated, it wasn't really exceptionally bright. So, i remember that i was pleasantly suprised when i saw the results and there wasn't too much noise. Also, i haven't used this video raw mode, just normal format without extra color bits. Had no idea how to use it properly, and video was for keks anyway, not processed at all except cutting and stitching it together.