I did a quick look around

I did a quick look around (googled) and I couldn’t find anything pertaining to stock footage. It is a rather awkward situation though and it appears, in the USA, that states can have different laws about using faces and likeneses.

For the last month or so I’ve bee reading about best practices on the http://www.centerforsocialmedia.org/website. See if you think that stuff applies to your situation.

bruce