[DCP-o-matic] Scaling options

Hi Carl - can you comment on the scaling types offered in DCP-o-matic? Is that performed by FFMPEG functions? I tried to look up the more exotic ones (e.g. 'X'), but did not find all references from here: https://www.ffmpeg.org/ffmpeg-scaler.html 'X' could be the mysterious 'experimental scaler'? I know it's useless for most applications except 'real' experimental ones, but I am currently missing 'nearest neighbor' or pixel repeat. I may find other ways to do what I want to do, but, just in case... Wondering how I could downscale an image series with the most basic pixel repeat method. Maybe I have to batch image magick with the -sample resize option. Leads us to my old issue that I think scaling options should be under the content tab and should be made content specific - not under DCP tab. And that takes us to v2 where the strict separation of content and DCP options in the GUI is broken up (e.g. with audio). Anyone likes to discuss this? I really preferred the strict separation of content related parameters and formal DCP parameters in v1. For my thinking, that is the most solid approach to create well defined compositions. Now that DCP-o-matic uses more inherent parameter constraining to assure formally correct DCPs, I would understand that it isn't necessary anymore - but I still don't like it ;-) Anyone? - Carsten