TrailerTheme – Trailer & Theme Song Downloader for Emby/Jellyfin/Plex (Windows)

[Gembird79 0]

Hi everyone,

I’d like to introduce TrailerTheme, a Windows desktop app I developed (Gembird79).
It helps you fill missing movie/TV trailers and theme songs for libraries used with Emby (also works well with Jellyfin/Plex-style folder layouts).

Permission was confirmed for the Third Party Apps section — thanks!

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What it does
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TrailerTheme scans your local media folders and can:

• Find and download trailers next to your movies/series (Emby-friendly naming)
• Find and download intro/title theme songs as theme.mp3
• Let you preview results in-app
• Verify downloads with a traffic-light status (safe / check / unsure / error)
• Run manually (confirm each match) or in Automatic mode (unattended batch)

It does not host or redistribute media itself.
It searches publicly available online sources (mainly YouTube; metadata/search may also involve sites such as TMDb, IMDb, Videobuster, MusicBrainz, etc.) and downloads into YOUR local library folders using yt-dlp.

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Screenshots
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Hero / overview:

Scanner (scan library, select titles, preview trailer + cover):

Theme Songs (find/play intro themes, save as theme.mp3):

Trailer verification:

Theme verification:

Pro / license tab:

Settings (language, quality, codecs, cookies, helper updates):

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How it works (step by step)
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1) Install the Windows setup from GitHub Releases
2) Add one or more media root folders (your movie/series library paths)
3) Scan — the app lists folders it recognizes (e.g. Title (Year) …)
4) Select titles (or Select all)
5) Choose a mode:
   • Load selection → interactive: review/confirm candidates (popups)
   • Automatic → batch run without confirmation popups (good for large libraries)
6) Files are written into the media folders (trailers / theme.mp3)
7) Open Verification tabs to check matches, play them, mark as OK, or replace
Emby can then pick up the local trailer/theme files like other local extras

Also available:
• Manual workflow: search on YouTube/Google, paste a link, download
• Built-in preview player
• Live log for progress/errors
• In-app updates from the public Releases repo
• UI in German and English
• Options aimed at hardware playback (e.g. Nvidia Shield-friendly codec preferences)

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Requirements (typical)
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• Windows 10/11
• FFmpeg + yt-dlp (helpers can be updated in Settings)
• Node.js recommended (YouTube extraction)
• Optional: browser cookies if YouTube blocks anonymous downloads
• Optional: free TMDb API key for better metadata matching

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Download / project page
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Public page (installer + screenshots, no source code — closed source):
https://github.com/Gembird79/TrailerTheme-Releases

Latest release:
https://github.com/Gembird79/TrailerTheme-Releases/releases/latest

Support / bug reports:
https://github.com/Gembird79/TrailerTheme-Releases/issues

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Notes
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• Free trial download quota, then optional Pro license (see Pro tab)
• Please use only for your private media library and respect copyright of trailers/music
• Feedback and bug reports are welcome

Thanks for reading — happy to answer questions here.

Best regards,
Gembird79

Edited 39 minutes ago by Gembird79