dirtydirtyangels is full of embedded videos but it does not do me any favours for SEO if i remove every embedded video and start hosting adult affiliates videos with unique names and bio will this do alot better for search engine's even tho there is fewer videos?

My friend, there are no guarantees with SEO and especially when it comes to google.

One thing for sure is that google does not like duplicate content.

Placing your own hosted videos will probably be better but will that increase your search rankings considerably or not ? Who knows!

If your site is SE optimized in ALL OTHER WAYS then I guess it will make a difference.

I'm not sure if it would make a difference. Google may well recognize that the videos are the same as those on other tube sites that host affiliate videos even if you did change the name and bio. Even if it helps now the next time Google update their algorithm you could be back where you started seo wise.