Hallelujah! An answer has been found. Jellyfin searches for Backdrop images that have a language set for them (meaning they have text in them) as its source for Thumb images. Finally got around to asking on their forum and got a response https://www.themoviedb.org/talk/686f19d2...68c0ed6a4a
And I could've found out a few days sooner if Jellyfin Forums would ever actually send me emails when people reply to my posts ðŸ˜
(2025-07-06, 07:11 PM)template326 Wrote: If my recall is correct, when you upload a "Backdrops" to tmdb and assign it a language attribute (e.g. English/Japanese) . It will becomes a thumbnail (Thumb) in jellyfin. The "No language" Backdrops is equal to jellyfin's Backdrop.
And I could've found out a few days sooner if Jellyfin Forums would ever actually send me emails when people reply to my posts ðŸ˜
Jellyfin 10.10.4
Ubuntu 24.04.1 LTS | Kernel 6.8
Intel i3 10100
8GB DDR4
Intel Arc A380
4TB File Server
8TB Media Server
Ubuntu 24.04.1 LTS | Kernel 6.8
Intel i3 10100
8GB DDR4
Intel Arc A380
4TB File Server
8TB Media Server