Influencing display in file browser

I understand that 3rd-party apps cannot access USB drives for alleged security reasons – that’s unfortunate, but not actually my issue, because I’m not even developing an app to run on WebOS, but one running on computers that prepares files and folders to be put on external drives (and discs) which may be attached to smart TVs or discovered as NAS in the LAN. If accessed by the internal media browser, I want to make sure those resources can be displayed in a helpful and beautiful way to users.

There are several (defacto) standards and proprietary solutions to ship textual metadata and accompanying artwork, some are embedded within media containers (e.g. classic ID3 tags), others rely on file naming patterns (e.g. s01e01 - Pilot_Episode.mp4, {filename}.nfo) auxiliary files (including playlists like extended .m3u and indexes like readme.md / index.html, or thumbnail images like cover.jpeg) or even online retrieval for most recent information (e.g. possible with .nfo).

However, in my brief initial tests with WebOS, I discovered none of them being supported by the media browser – or at least not used for presentation to the user. I also could not find any documentation on this topic (beyond file formats and codecs supported), in case there was some way to opt into advanced media file display or if some custom format was expected.

Could you please elaborate somewhere on what is possible in this domain?

If there is nothing available yet, I would gladly provide you with some suggestions learned from other systems.

This forum is only for webOS TV web apps. Sorry for not being helpful.