Targeted or not, most people are on YouTube for fun and might get curious from a video and visit your site.
But this doesn't mean their targeted in the sense of "in a buying mood".

When someone is looking for a product a search engine is still the obvious choice. So after your vid and your site they might go on to a search engine to get more info.

You could use cookiestuffing on your site or work with an incentive. Even if they find other sites with the same product they could return to you because you offer them something more.

Hope this helps.