Video looks decent enough. I would see this as a difficult feature to get people to know about. Preparing Gantt charts for presentations seems to be a niche enough market (project managers, IT consultants, managers, etc?) that you might have trouble getting them to adopt this tool. Certainly would be very difficult to get them to pay money for it.

Seems more like a feature you'd expect from a web-based project management software than something stand-alone. Is that your intention here? License the technology/tools to a service like that?