For videos, frame height, frame width, total bitrate, video bitrate, bit depth. For photos, height, width and other details. For audio, bitrate. Windows has all this in its Explorer, but lacks tabs (Clover adds that) and has a joke of a file search (Everything Search fixes that).

Integrating, extracting and displaying nicely some essential metadata for multimedia files using Exiftool or Mediainfo or other methods is largely unrecognised outside Directory Opus, and Windows Explorer straight up provides that as columns in detail view so you can sort files based on them. I do not think anyone realises how powerful Windows Explorer can be for serious file management for data hoarders and preservationists, with Clover tabs or 2 side-by-side windows.

Edit: checked Dolphin, apparently it decides to not show any video, photo or image info for some reason in detail columns, even though preview has the info. It fell just a sliver short of making me its biggest shill.

Edit 2: Baloo indexing just does not happen for Dolphin, this is why I prefer GNOME over KDE. Atleast shit works when GNOME claims it does.