: The source of the video. It was "downloaded" directly from a streaming service (like Peacock, Hulu, or iTunes) rather than being recorded from a TV broadcast (HDTV) or ripped from a physical disc (BluRay). This usually means high quality with no channel logos or "coming up next" overlays.
: The "tag" or name of the release group or individual who prepared and uploaded the file. Season 1 Overview Chicago.Med.s01.WEB-DL.1080p.Shad
If you are looking for a "write-up" on the actual content of this season: : The source of the video
: Season 1 (contains all episodes from the debut season). : The "tag" or name of the release
This specific string——is a release filename for the first season of the TV drama Chicago Med . Chicago Med : The TV series name.
: The resolution (1920x1080 pixels), providing "Full HD" clarity.