Ok, so I'm working on a short film. Very little dialogue was scripted for the piece, but as the actors got more and more into character they started improvising and adding little side-snippets of dialogue (phone conversations etc), and the director let them.
My dialemma is that as it was completely unscripted, these guys weren't mic'd properly. Now it happens that the producer/editor has decided to use the some shots where one of these guys is in the front of the shot, talking on his phone. The actor isn't available for ADR, and I have no clue what he was saying (as it was improvised) so am finding it difficult to replace myself. It wasn't captured well on any of the production audio (camera or boom). It's otherwise a quiet scene, so the viewer would hear the conversation, or at least snippets of it...
What would you do in this situation? I was thinking of trying to record mumbled conversations myself, but again am having difficulty with it sounding authentic.
Any advice would be appreciated!!