I want to make a video to demonstrate certain body movements, like putting a hand over one eye. This may be used with a commercial product, but it will be a linear video with no user interaction at all. It would just play. I would render it with UE4. Would I owe any royalties or have to give attribution, or anything else that I may missed?
Yes.
That would fall under Non-Engine Product per the ula.
ULA
Section 1, A) a.
(also likely A) d. )
— edit
No on royalties, unless you’re really cleaning up on this operation.
They don’t require royalties on the first $1 million US now. I think you’re safe on a demonstrational video.