Just thought i'd ask because this Thread has been open for some time now.
Since apparently there is no roadmap to fix/implement this on the pi 4 i will have to assume that it will not happen anytime soon.
I know that 3D Stuff at home is not the largest market and declining and such implementations are therefore not a priority.
Still would have been nice to be able to play my 3D Videos on the pi4.
Guess I will have to try using a small pc with vlc player or something like that.
Thanks for the Update and the great work you guys do with libreelec 
