Generally, when you commission photography or videos (or any creative work) from a professional who is not an employee of yours,  in the absence of a contract or agreement to the contrary, the client/customer (that is, your company) will own the copyright as a "work made for hire." The law gives copyright generally to the one who paid to the have the work created, (It is different if you buy an already-existing work; in that case, copyright generally remains with the artist, unless there is a contract or agreement giving it to the customer.) That said, it is clearly better to have copyright ownership set out in a contract or agreement, to avoid any confusion or disputes later.