[ajamils]

Thinking more into it, it -may- can be also depend how the playback software decodes and processes those half-res 3D videos, and this varies also with the constellation of how sensitive and enhanced is the displays auto recognition mechanism.  If there's something isn't quite standard with the header info, could be only matter in the case if the displays internal player is used. Am I right on this one, or is the header info also been passed though the HDMI to the display? But it also could be possible, if some of the displays internal players, or -in the case of the external players devices- their auto recognition mechanisms could also detect it, without any referring header information, and would trigger just by the "simple fact" of the "Cut-Screen situation" somehow.

 That's what I'm thinking. Whether it is the tag in the name or something in the header, there is something that tell the display that the video is "3D" vs regular 1080p. The reason why I keep mentioning Kodi's internal player is that it read the 3D tags in the file name and automatically offers the option to play the file as 3D or continue as 2D. So when Kodi plays the file as "3D" there should be a way to send that info to the display as well so that it automatically switches to 3D mode. Maybe somehow this can be triggered via batch file to invoke "Nvidia 3D" mode, which in turn will trigger the display to switch? 

If that's not possible then is there a way to convert SBS to frame-packed 3D?