i would go with the intel build solely on the the hyperthreading that is in the i7 and will allow your video processing to run much faster than the amd. I would also take a look at the ivy vs haswell with haswell being 10% better performance, less overclockable and slightly more expensive than the ivy bridge which can perform just as well with these tasks. I would recommend the i7 4770 the reason being even though it isnt overclockable the 4770k lacks the TSX feature that speeds up synchronization between threads, and this functionality can be part of a library, a framework, or even the OS so software can benefit without needing adjustment.