jellyfin, branch v12.0-rc3

Merge pull request #17227 from altqx/master

2026-07-22T00:47:02Z

Match VobSub MKS subtitle profiles by container

Merge pull request #16980 from TheMelmacian/feature/library_specific_language_filter_values

2026-07-22T00:43:31Z

Improve language filters to only fetch language codes that match the requested items/libraries (follow up to #9787)

Merge pull request #17370 from zerafachris/fix/item-update-null-optional-fields

2026-07-21T22:17:22Z

fix: don't throw ArgumentNullException on partial UpdateItem payloads (#17366)

Merge pull request #17369 from Shadowghost/harden-startup-wizard

2026-07-21T22:17:08Z

Prevent unauthenticated re-run of the startup wizard on misconfiguration

fix: remove obsolete code

2026-07-21T20:20:07Z

Merge pull request #17160 from 854562/truncate-language-strings

2026-07-21T15:22:32Z

Truncate ISO-639-2 language display names at first delimiter

Translated using Weblate (Latvian)

2026-07-21T14:35:53Z

Translation: Jellyfin/Jellyfin Translate-URL: https://translate.jellyfin.org/projects/jellyfin/jellyfin-core/lv/

Fix subtitle encoding for local files (#17281)

2026-07-21T12:52:59Z

* Fix subtitle encoding * Add short-circuit * Use IsTextFormat * Update MediaBrowser.MediaEncoding/Subtitles/SubtitleEncoder.cs Co-authored-by: Bond-009 --------- Co-authored-by: Bond-009

Merge pull request #17368 from Shadowghost/security-path-traversal-fixes

2026-07-21T12:52:40Z

Backport and extend path traversal fixes

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2026-07-21T12:30:55Z