I guess if there is a way to restore a, let's call "B" clip, having only an "A" clip and a difference clip between "A" and "B"...
Let me explain better: "A" is any given clip; "B" is the "A" clip, but denoised/degrained/color corrected etc.
Now, I want to get only a difference clip (let's call "DIFF") between the two; then, given only "A" and "DIFF", get "B" back, bit-for-bit identical.
Is it possible?
(please forgive me in advance if it's a silly question, or discussed before, but I've not found anything about this)