You're right; a lot of professional video editing that utilizes high resolution or heavily color corrected footage will first be rough cut with low resolution p

You're right; a lot of professional video editing that utilizes high resolution or heavily color corrected footage will first be rough cut with low resolution proxies, only substituting the full quality footage for final assemblies. Back when REDs first came out, there was a lot of buzz from amateur and student editors who could get 1080/720 proxies of their freshly shot 4K footage almost instantly and hand it off to editors before production even wrapped. This had been the standard for many professionals doing off/online editing for a while, but getting access to that workflow for relatively cheap was the new, cool thing.