I’ve had this same problem since i updated the os for the 4s. It had worked before, but after that update and a few since all the clips from the phone import as green with audio. Oddly enough if I open them in windows media player it plays the video and no audio. The content is there, we just need premier to find it or the phone to record it in a way premier understands. It was working great the first few months I had the phone.
Any ideas? did the original poster find a solution?