How many of those 2.5 second "shots" are back-and-forths between two perspectives (ex. of two characters talking to one another) where each perspective is consi

How many of those 2.5 second "shots" are back-and-forths between two perspectives (ex. of two characters talking to one another) where each perspective is consistent with itself? This would be extremely relevant for how many seconds of consistent footage are actually needed for an AI-generated "shot" at film-level quality.