Thank you! We restricted it to 10 seconds to help keep the videos interesting. We definitely need a better way to trim the videos though. We'd like to build a mobile app that makes it very easy to select which 10s of the video you'd like. For now, it just uses the first 10s.
Though this will tie you onto a different platform at least initially, have you considered integrating with vine/instagram in any way? Could be a good way to acquire more users.