A collection's content is dumped to a JSON (preferably the same as the mbdlist format - see below). { "movies": [ { "id": 845781, "rank": 1, "adult": 0, "title": "Red One", "imdb_id": "tt14948432", "tvdb_id": null, "language": "en", "mediatype": "movie", "release_year": 2024, "spoken_language": "en" }, { "id": 912649, "rank": 2, "adult": 0, "title": "Venom: The Last Dance", "imdb_id": "tt16366836", "tvdb_id": null, "language": "en", "mediatype": "movie", "release_year": 2024, "spoken_language": "en" } ], "shows": [] } These JSON files can be used to create collections in Jellyfin with the aid of a third-party tool.