2024-03-25, 08:19 PM
(2024-03-25, 04:12 PM)TheDreadPirate Wrote: I got a clearer answer. Jellyfin's ISO support is derived from what ffmpeg supports. In short, ffmpeg support for ISO probing is not great. A BDMV or VIDEO_TS structure would work much better than ISO.
BDMV structure doesn't show the language tag either, so I'm guessing the only solution is remuxing the ISO/BDMV to mkv