Marvel Studios launches a new featurette of "Avengers: Endgame" in which the cast talks about the passage from 'Infinity War' to 'Endgame', to a film in which the Avengers must take the responsibility they have on their shoulders and put an end to Thanos at once. The video does not add new material, beyond the statements of the cast, but it does confirm the rating of the film, and if anyone doubted it, it will be PG-13. 