Building upon this topic, I'm actually interested in redoing all my rips in Full SBS but I'm a little confused by what that is to DVDFab. In my mind, FSBS would be a total ratio of 3840x2160 for a 1920x1080 movie, where the left and right packed frames would each be 1920x2160. If I choose the 4K 3D MKV profile as my output profile I only get 50% as an option, with a little graphic showing a res of 800x600. I assume the graphic is just for reference but its really throwing me off. If I choose the 3D MKV 1080p profile, I get both 50% and 100% in the split screen options. I don't see how you can fit 100% of of two 1080p frames into one 1080p frame but maybe I'm looking at this all wrong.
So if there's any 3D enthusiasts that have some advice, I'd love to hear what you think would give me the best results in VR apps like Bigscreen that only support SBS or OU for now. I've found that If I use MPC-HC to play full quality MVC videos in SBS on a 4K monitor, it looks original quality.