“Videos of any subject (except one) can qualify as TTG as long as they meet all of the requirements* of the Trust Test.”

What’s the one exception?

As per V8 of the Trust Test,

Videos that feature as a primary subject “any non-TTG-qualified image that looks like a TTG-qualified photo or video” can never meet V8 no matter how thoroughly they are labeled and explained.

*Note that because of the requirements in V7, TTG-qualified videos cannot be made of subjects that can only be recorded outside the visible-light spectrum.