I know some websites that provide 3D/360 VR videos within the browser when phone is placed into a Google Cardboard ( non-electronic device, two plastic lenses and a cardboard box that holds your phone ) without using VR engines.
I guess such videos are based on two files that include 2 views ( left eye / right eye ) for 3D and they are embedded on the web page with access to some browser APIs to get the position of the device for the 360 experience.
I would be grateful if you could tell me how to make such videos. Let's consider I already have mp4 files created by a 3D/360 cam. How can I embed them on website to create the 3D/360 experience within a web browser on a phone?