We did something similar with FacesForce.com and tried a few markets. Video is very tricky. It appears it is best to let users submit a video without being asked, but the issue with this is users do not want to pay. So the HH model will definitely bring in revenue faster.

A few people are worried they may be discriminated against if they send a video, but if someone is going to disqualify you based on what they see, they will do it when you show up for interview. So at least you save time.