Hi,
Different options here.
You candownload the 1.18.5 release and find a 360videoplayer example in the examples folder.
Change the video file(s) with your own.
Mp4 should just work. Have a try.
You could use handbreak or ffmpeg for encoding.
I have a droplet that does this all in one go.
It copies an interface template, makes all posters, audio and video files with ffmpeg static build .
Out put is ready to play 360 video interface with vr function. (Single videos)
This droplet i will share, probabbly soon. I can get you one if you like.
But like to wait for next release.
Tuur