FirstLoveMovies

remux = extraction sans compression (meilleure qualité que du rip qui signifie encodage / compression)
deepl : remux = extraction without compression (better quality than rip which means encoding / compression)

Lazhar est un film charmant *sur le professeur Lazhar*, mais il se lie d'amitié avec une étudiante.
deepl : Lazhar is a charming film *about the Professor Lazhar*, but he befriends a student.

C'est un film agréable.
deepl: It's an enjoyable film.

To say it in short: A BD Remux is the original Blu-ray, only muxed into a mkv container, not encdoed to a smaller file size.