Ask HN: Movie (or TV show) recap at any point in the movie

You know what is annoying? When you watch a movie halfway through and then stop. You come back to it a few days later but some of the details aren't fresh in your mind.

Wouldn't it be cool if Netflix had a recap service for what has happened so far at any moment in the movie.

Is it possible to pick up on important parts of video/sound/text(subtitles) and then automatically create a video collage or recap?