Isn’t this post of any help? I haven’t tried it, I just giving a pointer to possible solutions. Don’t know if 180 sbs is supported though. The before and after indicates that there should be support for it though.
potplayer is free and by far the better then anything else i have tried. it can be complex to setup, if you need help let me know. Also it provides the best picture in regards to standard 2d as well with madvr and all of its settings. The vlc option i havent tried, SLR will probably charge you at least a subscription to use such things, heresphere costs money. I havent tried the go pro suggestion yet though, might be legit
With this media info injector thing, 180 sbs was mentioned as supported, but the injector interface still said inject 360 so i wasn’t sure. Very intriguing though as I’ve opened some files in the past that did automatically go into this “mouse movable, perspective adjusted” format, so I can understand what it’s trying to do.