www.makemkv.com

I have a 3D iso (about 34gb) and want to convert it to a SBS format (as I understand it is a must to be able to use it in KODI on my QNAP HS-251).
How do I do this the best way?
I have tried with MakeMKV, but I end up with a mkv-file that is ok to open in KODI (at the QNAP HS-251), but the it get a wierd picture in Side-By-Side view.
I am able to open other SBS-movies but I am not able to produce them by my self.

MakeMKV will extract the 3D MVC track and put it into the MKV file, but your player has to understand how to deal with that.

A search on Google for "convert mvc to sbs 3d" comes up with several tools to make the conversion to SBS or TAB 3D.