my mother just bought a new video camera (really I gifted her one she's one of those mom's who documents everything and has been using a 10 year out of date camera) here's the cam I bought her http://www.bestbuy.com/site/Sony+-+High-Definition+Camcorder+with+2.7%22+LCD+Monitor+-+Black/9745998.p?id=1218166125484&skuId=9745998 and well she really like it but has been using a 2gb memory card for it. what is the length per gig of hd video on a HD camera. as to I know the right size of cards. what I really want to know is how much recording I get for 1gb at full HD