Experienced Video Technician / Video Maker sought

I am aiming to host VR games and videos on my site, and make them downloadable for customers. I will be either (1) hosting games and videos on my site, or (2) more simply making them available through a dedicated VR hoster like Steam. My videos and games are VR high res up to 4k but not of long duration (less than 5 minutes each) (1) If the videos are hosted on my site I believe I need conversion of VR and 3D video files to playable formats, creating MPEG-DASH or HLS streams, then DRM applied (such as a service provided by EZDRM does) . The games and videos will need to be downloadable to VR headsets, STBs and Smart TVs. (2) If the games are to be hosted via Steam etc. I need to know how to prepare them for upload to that site. The Steam site is totally unhelpful in this regard, so a person who understands the process is sought. A suitable expert can expect longer-term involvement