For short videos the it-3570k would be the better value. Unless you are doing huge batches of 6 minute videos (like at least 30) on a consistent basis, the i7-3770k would not be worth it.
^ +10 This plus a Hyper 212 EVO for some OC and it'll scream
Alright thanks, so I should upgrade my GTX 550ti. Solved!
Not sure where this is coming from... But yes you should! A Radeon HD 7870 or HD 7950 represent easily the best bang for buck you'll see.