Well, the i3 will do video editing just fine, but the i5 will just do it quicker, so really, that decision is up to you. For me personally, I would go ahead and get the i5, but that's all my own opinion.
I agree.. With the i3 you can video edit just fine... But for a boost of speed go with the i5
If ur budget is low then just go with the i3 though... U shouldnt have much problems with it