GoKawiilJellyfin releases version 12.0 with new database engine and book support
The open-source media server project Jellyfin has shipped version 12.0, a stable release that completes the database conversion started in 10.11 and translates it into concrete performance gains. The update also adds long-requested support for books and comics, alongside changes to how usernames and alternate video versions are stored.
GoKawiil's interpretation of the reporting above, not reported fact.
Because the release rewrites the database schema on first boot, it's a one-way upgrade that demands a full manual backup, a mandatory library rescan, and awareness that usernames are now case-insensitive, which could break migrations for some setups. Self-hosters running large libraries should expect a slower-than-usual first scan and temporary disappearance of auto-grouped alternate versions until it completes.
- Users must be on 10.10.7 or any 10.11.x release before upgrading to 12.0.
- A full backup and full library rescan are required due to schema changes and cleared auto-grouped versions.
- 12.0 adds native support for books and comics alongside database-driven performance improvements.
Western Digital WD Elements Desktop External Hard Drive — Jellyfin 12.0 rewrites your database on first boot, so the release notes are blunt: take a full manual backup of your data and config directories first. A roomy desktop external drive gives you a simple place to dump those folders (and your growing media library) before you hit upgrade.
See Western Digital WD Elements Desktop External Hard Drive on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: jellyfin.org — Cody Robibero, 2026-09-08
Published there as: “Jellyfin 12.0”
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