First check: http://goo.gl/PRCAl
I need similar to this but with. At this point it will have same pages you see on menu.
I have all videos and images and text. 1 video will play in background full screen no matter resolution until a menu option is clicked.
I would prefer Wordpress so there is an easy CMS, but a custom or different CMS to upload videos and images and to be able to edit text will be fine.
I will be online frequently to answer any questions.