This project is quite a challenge. Whoever is saying otherwise either does not know anything about programming or is just trying to grab the project and keep you hooked.
I have strong knowledge of HTML, HTML5, CSS, CSS3, PHP, MySQL, jQuery, Javascript, Ajax.
This project is all about HTML5, CSS3 and jQuery. Not to mention Javascript and Ajax. Of course, PHP + MySQL are the foundation.
There are issues to be clarified like: working offline, integrating video file (even without using Vimeo or Youtube services), freely positioning of every element on the slide canvas etc. However, all are doable within the right time frame and money budget.
I use to work only with pure language, no dev environment in order to control the scalability, integration and bug propagation.
I am sure I can build for you perfectly.
Thank you.