I just ordered a DSLR camera which besides taking great photos it also shoots video at 4k.. I'm looking for a macbook to eventually edit and export these videos. I'm also not looking to break the bank for this purchase. What kind of horsepower do i need to run Final cut pro and work with 4k videos without much lag? Will a macbook air do the trick or do i have to go directly to the pro? I'm also open to refurbs and past year models. Thanks in advance!
Final Cut Pro allows you to edit "proxy media". It converts you 4K video to something much smaller. Then you work with this down sized copy while editing. After you are done it can apply all the cuts to the full resolution file. This way you could actually edit on a mac book air.
The problem you will find is not the lack of power (proxy media soles that problem) but lack of screen space. A 13" screen is very small for an app like FCP. Even my 27" iMac screen gets cluttered. You are going to need an external monitor. But you'd need one anyways to view the 4K video. So whatever Mac you buy, refurb or whatever that it can drive an external 4K monitor
The internal SSD is way to small for holding all your video files but what you do is copy just the files you are using to the library on the internal SSD then swap them back to a much larger external disk or NAS. Buy the Mac that can support multiple FAST disk drives. You will be moving lots of data and you don't want to be stuck with USB2
Backup will be an issue with all that data.
You don't really need an ultra fast CPU to edit proxy media but you need lots of fast storage, lots of RAM, at lest 16GB and of course a 4K external monitor.
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FCPX will choke a MBA quickly. You need a pretty highly-spec'ed MBP... 16gb RAM, SSD and a quad core processor.
My daughter uses her MBA to edit 1024p video and it works well evan with only 8GB of RAM. The problem is filing up the SSD and having to be swapping files between internal and external libraries. Yes you can mess with the settings and cause FCP to choke on an MBA but you can also set it up with down sampled proxy files and it runs well. OK well until it comes time to render and it might run for an hour, do that when you are not sitting in front of the computer And yes you do have to wait while the big video files are down sampled. In theory you can beginning editing while the down sampling goes on in the background. Maybe this works on a Mac Pro, in the MBA you have to wait for the import to finish before you can edit without lag.
The bigger problem is screen space. By the time you have several time line tracks and your library and there viewer window your screen is over filled and you do to much scrolling and hiding and re-exposing windows