We had an interview recently and what the interviewers did was use the iphone to record the audio (which it is very good at) and a Canon DSLR to record video. It was a promotional video for one of our clients. Sounds like a ghetto set up but these interviewers seemed like they knew what they were doing. Haven’t seen the results yet but they told me it turned out great after some editing. The interview was awful, though! We were nervous and I couldn’t apply what I learned from the Positioning Interview talk by String Nikolic