Yes there is a GUI. it is called Bino. it can play 3d videos and convert one 3d video format into another. it is a front end for ffmpeg and uses ffplay. I have been using it on my laptop to convert 2d to 3d and play via HDMI to my home built VR head set. Bino is excellent for playing 3d for VR headsets. download it and have a play with it.