I'd be surprised if it worked. Some USB sockets are provided simply for
reading storage media and not for other purposes associated with
computers. I'd expect those on a TV to come into that category.

They're often designed specifically to support keyboards so they can they
add a basic (or better) web browser too. As others have indicated, many TVs
are now Linux based so it's easy.

Interestingly, using Linux means that the software, in some form, has to be
made freely available. But I'm not aware of any "TV hackers" creating their
own-brew TV software - no doubt someone will be along soon to tell me about
them!

Paul DS