There is two ways to get VR video.
1. You can go to YouTube or some other website to download some VR content and transfer them to your Phone.
2. Convert some 2D video to VR mode.
To convert normal video to VR mode, it is necessary to get a VR Video Converter. VideoSolo Video Converter Ultimate is one of the best VR video converter that has ability to convert non-VR 2D videos, DVD, ISO to virtual reality mode. It offers five 3D modes - Anaglyph 3D, Side by Side (Half-Width) 3D, Side by Side (Full) 3D, Top and Bottom (Half-Height) 3D and Top and Bottom (Full) 3D. You can choose any one you like then convert your normal video to VR for watching on Samsung Gear VR, HTC Vice, Oculus, etc.