app-template/app/docs/en/guide/what-is.md

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What is Fanmu

Fanmu is a self-hosted media library.

Your videos live on a WebDAV drive (OpenList included). Mount that drive in Fanmu and you can play in a browser, with danmaku on top.

Why this exists

Watching a local or cloud file has one old problem: no danmaku.

DanDanPlay solved this for desktop: play a file from disk, get matching online danmaku. Fanmu does the same idea in a browser:

  • Nothing to install on every machine
  • Phone, tablet, TV browser all work
  • Files stay in one place on the drive

What it can do

  • Mount WebDAV (OpenList uses its WebDAV endpoint)
  • Play video in the browser; progress is saved
  • Danmaku: matched from the open danmaku network; local XML as fallback
  • Library: scan in files, posters, resume where you left off
  • Accounts: each person has their own list and progress

How it relates to DanDanPlay

DanDanPlay Fanmu
Where it runs Desktop app In the browser
Where files live Local disk WebDAV drive
Danmaku Open danmaku network Same network
Install client Yes No

Fanmu is not a plugin and does not need DanDanPlay running on your PC. It stands on its own: video from your drive, danmaku from the web.

Not in v1

Present in DanDanPlay, not here yet:

  • BT download / RSS
  • AI subtitles and summaries
  • Cast, frame interpolation
  • Emby / Jellyfin / Plex (WebDAV only for now)

The main path first: mount → find → play → danmaku → progress.