"Coming Soon" library for Emby

[Babatom 18]

I wanted to share a little side project I've been working on — a lightweight Docker container that turns your Radarr/Sonarr release calendar into a "Coming Soon" library right inside Emby.

What it does:

• Syncs upcoming releases from Radarr & Sonarr automatically
• Generates a folder structure that you can add as a mixed-content library in Emby — complete with poster art (with badges), backdrop, .nfo metadata (release date, description, genres, rating, cast for movies), and a placeholder .mp4
• Adds visual badges on posters: UPCOMING, a countdown ("5 Days"), and episode badge for shows (e.g. S03E07)
• Cleans up entries that are no longer upcoming
• Runs on a schedule (default every 6h) via Docker

Built for Unraid, but works on any Docker host.

Testet with Emby Beta v4.10.0.17

It's vibe coded — built with AI — so review the code before using it in production. Use at your own risk!

GitHub: https://github.com/mrt187/release-poster-sync

Edited yesterday at 12:06 PM by Babatom

[Luke 42681]

Thanks for sharing.

[ebr 16465]

On 7/5/2026 at 6:14 AM, Babatom said:

Syncs upcoming releases from Radarr & Sonarr automatically

Hi.  Why not get this info from the metadata providers instead?

[Babatom 18]

52 minutes ago, ebr said:

Why not get this info from the metadata providers instead?

If I'm not mistaken, Emby's metadata providers only work with content that's already in your library. With Radarr/Sonarr, I can track titles I'm interested in — including things I don't own yet. This container simply reads that calendar and displays it as a "Coming Soon" shelf, so I know what's dropping soon without having to check Radarr/Sonarr separately.