Hey @dstruevision! Welcome to the Forums!
I think what you are looking for is i. Non-Engine Products (e.g., Rendered Video Files) in the Unreal Engine EULA and b. Linear Media (e.g., Rendered Video Files) from the Epic Content EULA. However, it would be best to get some sort of legal representation to look over the documents to make sure everything is all clear for your uses as this by no means is legal advice.
I hope the above is the answer you were looking for!