This is a developer forum. As such, a helpful answer would include how to perform the task using APIs, SDKs, etc. Not advertising (what I'm sure is a good) commercial service. What APIs are you using at Halocline to do the conversion, for example?

Monitoring network traffic. As someone who spent 4+ years doing immersive video, those numbers don't seem that off to me. Of course, I haven't created any content at those specifications (yet), so YMMV.