jellyfin

Jellyfin Server

CPU Usage

N/A

Memory

N/A

Location

N/A

Publisher

N/A

Notes

Jellyfin is a fully self-hosted, privacy-respecting media server. Download from official sources to ensure integrity.

License

GPL-3.0-or-later

Publisher

Jellyfin Project

What is jellyfin?

Jellyfin-server is an open-source media server that runs on Windows, Linux, and macOS, organizing your movies, TV shows, music, and photos into a central library and delivering streams to any compatible client. It stores metadata, supports on-the-fly transcoding, plugins, and a web-based interface for easy management and sharing.

Jellyfin-server is a .NET-based service that indexes media from configured folders, serves content over HTTP to clients, and uses FFmpeg for transcoding when necessary. It can fetch metadata from online agents, and is designed for self-hosted, privacy-friendly streaming.

Is it Safe?

Is it a Virus?

Why is it Running?

Reasons it's running:

Active client streaming: A client is actively requesting media, which keeps Jellyfin serving data to a player or mobile app.
Library scanning and metadata: Jellyfin periodically scans configured library folders to detect new files and refresh metadata with posters, genres, and summaries.
Background transcoding: When a client requests a format not natively supported, Jellyfin launches FFmpeg to transcode on the fly.
Agent-based metadata updates: Metadata plugins fetch additional information from online sources, triggering CPU work and disk I/O.
Startup and maintenance tasks: On boot or service restart, Jellyfin initializes API services, schedules tasks, and binds to network ports.

Can I Disable or Remove It?

Common Problems

Common Causes & Solutions

: Check system and Jellyfin logs for errors; verify the binary exists and has correct permissions; ensure the service user has access to media and config directories.
: Ensure FFmpeg/FFprobe is installed and accessible in PATH (e.g., /usr/bin/ffmpeg); verify codecs and enable hardware acceleration if supported; adjust per-stream transcoding settings.
: Verify library paths are correct and accessible; check file permissions; exclude problematic network shares; review scan logs for errors and rescan.
: Confirm Jellyfin is listening on the expected port (default 8096); check firewall rules; verify base URL matches client config and assess reverse proxy setup if used.
: Limit concurrent transcodes and enable hardware acceleration if available; tune transcoding quality and bitrate settings to reduce load. On an 8-core CPU, 2 concurrent transcodes may use 60-200% CPU depending on codecs.
: Enable relevant metadata fetchers in the admin dashboard; ensure internet access for fetchers; update plugins to fetch posters, genres, and summaries.

Frequently Asked Questions

What is Jellyfin server?

Jellyfin server is a free, open-source media server that hosts your media library and streams content to various devices via a web UI or compatible clients.

Is Jellyfin server safe to run on my network?

Yes, Jellyfin is self-hosted and source-available. To stay safe, keep it updated, run behind a trusted network, and avoid exposing it directly to the internet without proper authentication or encryption.

Do I need internet access for Jellyfin to work?

No, Jellyfin operates locally. Some features like metadata fetching and plugin updates require internet access, but your media streams can be served entirely within your LAN.

How do I install Jellyfin server on Windows or Linux?

Installers are available from the official Jellyfin site. Windows uses jellyfin.exe as the server binary, Linux packages install the jellyfin service; after installation, configure libraries and network access via the web UI.

How can I enable remote access to Jellyfin?

Open port 8096 (or the configured port) on your router, set a proper base URL, and enable user accounts with TLS (HTTPS) for secure remote access; consider a reverse proxy with authentication.

Does Jellyfin use GPU acceleration for transcoding?

Jellyfin can leverage GPU-based transcoding if the server has compatible hardware and the necessary drivers and FFmpeg built with hardware acceleration support.

Related Processes

Transcoder used by Jellyfin during on-the-fly media transcoding.

Probe tool used to fetch media metadata during transcoding.

If Jellyfin is packaged to run under the .NET host in some distributions.

Linux systemd service unit that manages the Jellyfin server lifecycle.