Creating for Video
Audio sweetening is prevalent in every movie and some TV shows you watch. Hardly any of the audio captured during production is used in the Final Cut. Every rustle of a leaf, footsteps, fabric noise, and turn of a doorknob is recorded in a studio and added so as to trick you into believing what you're seeing on screen. Yes, even the dialogue is replaced (ADR) in a studio with the actors after the production has wrapped.