From what I'm seeing the Vimeo api looks like a really easy, clean and inexpensive option.
Thank you
A $70 subscription turned into a proposed 414,400 to $25,000 plan. Now, to be fair to them, they gave us a heads-up with plenty of time that our usage was too high after we were running for a few months and even after we worked through all the options with them they gave us enough time to migrate away. Also, to be fair to you and them, our use-case was almost the opposite of yours. Each video was at least 5GB and the content was very popular.
Still, this is an inherent limitation of anyone offering a "unlimited" plan and I wish they would just communicate those limits (because they are definitely known internally).
All in all, probably great if you stay under their limits but they are very enterprise-y otherwise.
We moved to BunnyCDN and our monthly costs have not increased above the $70 we budgeted for Vimeo.