For video files and games, trailers can be stored in the same folder as the media and named identically with a -trailer suffix.
/Movies
/Home Alone (1990)
Home Alone.mkv
Home Alone-trailer.mp4
Alternatively, trailers can also be stored in a trailers sub-folder. Bluray and Dvd folder rip structures must use a trailers sub-folder.
/Movies
/Home Alone (1990)
/VIDEO_TS
/trailers
trailer.mkv
The trailer channel can also provide streaming trailers for your movies.
For more information, see plugins.