Develop a Mac Application

I need you to develop some software for me. I would like this software to be developed for Mac . I am looking to build a piece of software that allows a user to upload a video file of a potential tv advertisement and to then be showed that ad In context among others as it would be seen on the television. I would like to be able to set up multiple sample sets of ads, chosen to represent ad breaks for different broadcast types (sports, award show, morning talk show, news, children's, etc.). Visually this would look like a simple square with a place to input the users video file, a dropdown selection for broadcast context and a dropdown selection for position is fine Functionally the user needs to be able to load a video file into the application and make a selection as to what type of context they would like to view their video file within (sports break, news break, etc). the application will then play back a predetermined set of ads that correspond to the selected context with the user's video file inserted randomly in between. Think of it as simply a tool for watching an ad that I or an ad agency have produced as it might be seen live on TV. See attached document for more info.