Great one pager template that would be good for creative studios or portfolios. DUALITY has all the features you are looking for, including a parallax animated image background and responsive web design built on Bootstrap. I really like everything about this template. It can be yours, with the PSD file, for only $13 from ThemeForest.
HTML5 responsive template for portfolio websites, landing pages, app websites or creative business/personal presentation. Unique features and modern design. Photoshop file included.