I am REALLY SORRY for the question I am about to ask, but I am an ML user since... well... yesterday... Please forgive me

I have tried the RAW2GPCF, using the trial version of Gopro Studio Premium. The Rawanizer seem to work, but the output files are a mess - video looks like it is full of bad compression artifacts.
Is it just because of the trial version, or do I have a problem at some other level? I want to make sure everything works ok before I spend 300$, as it is quite a lot of money where I come from
