I'm fairly well versed in many facets of Video in Hiring. I think the first thing to understand is that there are several options out there. I personally don't think video resumes will take off, and can support my assumption as CareerBuilder took down their video resume capability (see article here) because candidates simply weren't doing them. To add video into a hiring process takes a very clear definition of process, motivation, and the value proposition to the different parties involved.
I run a Video in Hiring group here on RecruitingBlogs and would suggest you review some of the content, and even potentially join and participate.
I am closely involved with a video company, Vipe, but am always interested in learning others' point of view and am happy to have a discussion - both learning your thoughts and potentially sharing my experiences.
Let me know what I can do to help,