I bought a 64gb ipad thinking I would have a ton of room for everything. Yesterday I played all my Bloggie footage on the tv and filmed it using the ipad as Bloggie isn't compatible. THen the ipad told me I had insufficient room to back this footage up and that I could purchase extra icloud storage. What is the difference between having 64gb of storage capability and icloud. Also when I go to my settings it say sthat I have a capacity of 57.2 gb is that because I already have apps on the ipad. Would it have read 64gb if I had none on there?