I don't know, but I wonder if there's a way to add compression to the videos, that might help. Maybe someone has developed such a thing?

 

The problem with recording high sound pressure is the sound waves over oscillate the mic's membrane causing the rattling during recording. I don't know that any software will ever remedy that. A trick I've used with other phones is to place a piece of heavy duty masking tape over the mic. It deflects the sound waves enough to stop the rattling without muffling the recording. I haven't yet had a chance to try it on my Rez but I don't know why it wouldn't work the same way.