Hi, I was interested to hear further details about your iOS video editing app. I am a huge fan of AVFoundation which is Apple's framework for all things video. My name is Elliott I am from UK, currently living and working from Spain, I am free to discuss details in private anytime.
I can turn my hands to most things using this framework, apart from obvious hardware limitations between the iPhone and the Mac - every API - everything Apple engineers have put into Final Cut Pro has been made available to us at the code level in iOS. I have studied and am well versed with most aspects including custom camera implementations, custom controls, live filters, OpenGL, video post editing, merging audio etc. etc.
I am a developer (writes code) not designer per se, although I can provide a simple, clean and intuitive UI at the code level, it would be good to be provided with a simple sketch or workflow diagram demonstrating to intended look, feel and flow or the app, any advanced designs or illustrations needed would ideally be provided. Does that sound like okay to you? I can of course share my insights and add UX to the app to make it look and feel great.
You can check out FaceTrax for iPhone or Stop Motion for iPad which are both related to video post editing both apps are in my name on the App Store.
Best regards,
Elliott McAllister