The application will be made specifically for the iOS platform at first. It takes prerecorded video and dubs it over top of video the user records on their device. The final videos will be able to be modified, under the users control, to some degree. They should have control over when the app footage is placed in the video they record. The final video can then be viewed, exported to the iPhone device's video app, or shared (email, facebook, twitter, or other social sites).
Note: Any previous experience using video apps or making computer video would be a huge plus.