well, i've been using unity for a game, but now i want to make an app that uses video and subs, i want to know wich platform would be better and opensource to use video in the app,
i've read about xcode, cocoa and objective c for those, but those are for plane code, is there a platform with visual interface? and easiest as unity?
I understand that you don't want to get into Objective-C much, but that will likely be your best option. You might want to look into Interface Builder in XCode since that will help you tremendously. Interface Builder is essentially a drag-and-drop editor in a similar vein to Unity. There is lots of support available and Apple and on the web for creating a video player for iPad in XCode using Interface Builder.