I enjoy the quality of iphone's video recording.. especially at 60fps. Currently my imac and macbook are somewhat old and the videos i record on my phone are very choppy on my them. After the holidays i will be upgrading to a new mac of some some sort and I'm wondering what specs should i look for to get a system that can play back my iphone videos without an issue. Is it the processor speed, graphics card or some codec that i may be missing?