This is Standard Definition (SD). It uses less data and storage but won't be as sharp as HD (720p) or Full HD (1080p).
If you're looking for the best visual experience for a show as cinematic as this, 480p might look a bit blurry on larger screens. House of the Dragon S01E07 480p TheMoviesflixnetmkv
A "Matroska" media container. These are popular because they can hold multiple subtitle tracks and audio languages in one file. This is Standard Definition (SD)
It looks like you have a filename for a downloaded episode of House of the Dragon . Since "make text" is a bit broad, I’ve organized the key details of that specific episode for you below: Series: House of the Dragon Season: 1, Episode 7 Title: "Driftmark" Original Air Date: October 2, 2022 The Storyline (No Major Spoilers) A "Matroska" media container
This episode focuses on the aftermath of a funeral at Driftmark, the ancestral home of House Velaryon. Tensions between the two factions of the Targaryen family finally boil over, leading to a violent confrontation between the children and a massive shift in power when one of the most powerful dragons in the world, Vhagar, finds a new rider. Based on your text, here is what those tags mean:
