How about this: You have a app on your iphone. You also has a app on your mac (or pc) that works kind of like backstage is for centerstage . In the app on your computer you can select folders that you can accsess on you iphone with the movie launcher app. On you iphone you can browse those folders and tapp on a movie file that opens in VLC (fullscreen) on your mac.

is this possible to make? i am no programmer so someone else should make this!