Movie trailers
A movie trailer is a promotional video associated with a work or release, with its own edit, language, resource and playback role.
A trailer is its own edited video, assembled to promote a film or release. It can use excerpts, titles, music and shots that do not appear in precisely that form in the feature. Its relationship to the film is promotional, not an alternate full-film representation.
Several trailers for one film can all be legitimate:
| Label | What may differ |
|---|---|
| Teaser | Shorter edit or an earlier campaign |
| Theatrical trailer | The main promotional edit for a release |
| International trailer | Edit, title cards, dubbing or release information |
| Restored-release trailer | Promotion of a later presentation of the same work |
The trailer's audio and text language can differ from the available movie source. Selecting the film's French audio does not automatically produce a French trailer.
A local trailer is a stored media resource. A remote trailer reference points to another service or location whose availability and delivery behavior can change. A catalogue can therefore know about a trailer without possessing an independent local copy.
Emby documents local associations using a trailer suffix or a trailer folder in its Trailer Naming guide. The relevant idea is that a short promotional resource belongs to the movie without becoming another movie entry.
Association and pre-roll use
A trailer on the movie's detail page helps a viewer decide what to watch. A trailer played before another feature forms part of a pre-roll programme. The same resource can serve both purposes, but the association and playback decision are separate.
Emby's Cinema Intros describes using trailers and custom intros before the feature. A library's trailer association alone does not prescribe that sequence. A custom ident or codec introduction can appear in pre-roll without being a movie trailer at all.
Because the trailer is an independent edit, its duration and played state do not establish that the viewer finished the feature. They describe a different playback event. That resource boundary keeps promotional browsing from being confused with watching the film.