I just picked up a pi4 on the hope 3D MVC was working. Sad to report that on 9.2.4 the 3D MVC playback does not work, it only plays the left eye the same as kodi on any linux pc that can't decode MVC for the right eye. Also SBS playback on the pi4 is currently broken it also just plays the left eye, but those same SBS files do work with kodi on a linux pc.