Video capture software

Video Capture application running on a mac connected to an HD camera. This application will be used to capture 30-45 sec videos and store them on a hard drive. This should be able to capture names and email address of the user and give a little tutorial how how to use the system. I ve attached some screen shots of an application for brabie that some one created. I would like to mimic this software and create my own. Please see the attached screen shots for a better understanding of the application. Please also note that the software should be able to caputre full HD video and store the 30 sec clips with sperate folders and the users that record their video message.