I have shot a couple of interviews on a Canon 60D using a Sigma EX DC 30mm lens with LED lights. In both interviews the footage has come up with thin horizontal banding across the whole frame. I either didn't notice in the small camera lcd screen, or it wasn't there whilst shooting. Here is a short clip of the footage so you can see what I am talking about.
Has anyone come across this before? What options do I have to fix this up?