X265 (HEVC) Encoding: This is the standout feature of this release. X265 is a video compression standard that offers significantly better data compression than the older X264. This means you get 720p quality at a fraction of the traditional file size.
This denotes the vertical resolution. A 720p video has 720 horizontal lines of vertical resolution (typically 1280×720 pixels). While 1080p (Full HD) and 4K are now standard, 720p remains popular for certain use cases: Mindhunter Season 1 S01 720p WEBRip X265-HETeam