LibrarySecondary Title Text
In this page
Semantic source, storage scope, and display fallback rules for the short line beneath a media title.
Where this lives in the code
src/MediaEngine.Domain/MetadataFieldConstants.cssrc/MediaEngine.Providerssrc/MediaEngine.Web/Components/Details
The detail UI has one visual slot beneath the title, but the stored metadata remains semantic.
| Media | Preferred semantic field | Primary source | Scope | Editor label |
|---|---|---|---|---|
| Movie | tagline | TMDB explicit tagline | Movie Work | Tagline |
| TV show | tagline | TMDB explicit series tagline | Show/root Work | Tagline |
| TV episode | none | — | — | No tagline |
| Book | subtitle | Apple explicit subtitle, then other explicit metadata | Literary Work | Subtitle |
| Audiobook | subtitle | Edition metadata, then literary Work subtitle | Edition then Work | Subtitle |
| Comic issue | subtitle | Explicit provider field only | Issue Work | Subtitle |
| Music | none | — | — | No tagline/subtitle |
| Book, movie and comic series | none | — | — | No line |
| Collection | none | — | — | No line |
| Universe | none | — | — | No line |
| Person | none | — | — | No line |
TMDB’s dedicated tagline is high-confidence provider metadata. Descriptions, plots, annotations, solicitation copy, and AI output are never persisted as taglines or subtitles.
For presentation only, an empty preferred field falls back to short_description, then to a bounded excerpt of description. The API reports the selected source in SecondaryTitleTextKind; the Dashboard adds “more in overview” when the fallback does not contain the complete overview. This fallback does not create or lock a canonical tagline/subtitle claim. Movies, TV shows, books, audiobooks, comic issues and works use this fallback. TV episodes, music albums, series, collections, universes and people have no line under the title and no presentation fallback, so their description is never repeated there.
Missing tagline or subtitle is optional and does not create Needs Review work. Existing items acquire newly supported values through normal versioned enrichment refresh rather than library re-import.