Need youtube-dl (python script) converted to work in cocoa (objective-c)

I need the following script: [login to view URL] Converted to work in objective-c so that a youtube url can be entered and the .flv gets downloaded. I must be able to try four different youtube urls for the final project and have the flv's downloaded in order to accept the final project. Code MUST be written in objective-c and must compile via xcode.