Have you considered packaging 3D photos with SLR Originals, using this method?
https://czechcasting.com/tour/matrix/
I still suggest that you purchase the DeoVR platform outright, if you have the capital. I have been watching DeoVR content directly through the app recently. While it's primitive at the moment, the whole experience would improve fast with AVI instead of H265 encoding. AV1 is royalty-free and can save up to 30% for file size compared to HEVC for the same image quality.