Vis.a.vis.720p.s01e01.web-dl.x264.ac3.dual.mkv.mp4

: Dolby Digital audio, common for surround sound support.

: This double extension suggests a container conflict; likely an MKV (Matroska) file mistakenly renamed to MP4 . Vis.a.Vis.720p.S01E01.WEB-DL.x264.AC3.DUAL.mkv.mp4

Narrative Guide: Season 1, Episode 1 – "Un mal día" (A Bad Day) Locked Up (TV Series 2015–2020) : Dolby Digital audio, common for surround sound support

: A video compression standard that offers high quality at relatively small file sizes. : Dolby Digital audio

: Indicates the file contains two audio tracks, typically the original Spanish audio and an English (or local) dub.

The filename contains specific tags used by release groups to describe the video's quality and encoding: : High-definition resolution (1280 x 720 pixels).