Wandavision.s01.480p.english.esubs.vegamovies.n...

: This specifies the audio track language. Since WandaVision is an American production, the native English audio is the foundational requirement for international viewers.

Each segment of this string provides specific technical data about the media file: WandaVision.S01.480p.English.Esubs.Vegamovies.N...

Based on the filename provided, this appears to be a digital copy of WandaVision Season 1 : This specifies the audio track language