Youtube videos are good for any SEO campaign. I am not really sure what your question is exactly, as it doesn't make sense. But, I am assuming you want to know if a highly viewed youtube video embedded on your webpage will help improve page rank. I am going to have to say no. There is no way the page rank from embedded videos even if they are your own, can help boost page rank. If that was the case, then people would just go on youtube and find the highest viewed videos and embed them all over their pages, thus stealing page rank from other peoples videos. That does not seem like something Google would allow. However, youtube videos are a great way to create traffic to a webpage. But that all depends on the quality content of the video, and where you place your website name. In my experience best results come from placing a watermark at the top of the video so the web address is visible for the entirety of the film.