# File System
## Directory Layout
```text
/META
  fopen.json
/MENU
  1.fim
/VIDEO
  1.av1.mkv
  2.vp9.mkv
```

- **META**
    - **fopen.json:** contains all of the informations about the FOD disc (title, starting point etc.)
- **MENU:** contains menu files in FOpen Interactive Markup format, more informations on the documentation page
- **VIDEO:** contains video titles in MKV format, these must follow the standard specs