Arr.719.720p.wb.x265.yourserie.com.mkv -

: The video codec (HEVC). This is a modern compression standard that provides high visual quality with much smaller file sizes compared to the older x264 codec.

: Likely identifies the series or release tag (potentially a shortened version of a show title or the automated system that sourced it). arr.719.720p.wb.x265.yourserie.com.mkv

: This typically represents the Season 7, Episode 19 of a series. 720p : The video resolution (High Definition, : The video codec (HEVC)

: The Matroska Multimedia Container, which supports multiple audio tracks and subtitle streams. : The Matroska Multimedia Container

: The attribution tag for the site or group that encoded or distributed the file.

: Short for Web-DL or Web-Rip , meaning the source was a streaming service like Netflix, Amazon, or Hulu.