This section is for all the technobabble and other stuff we talked about in various other sections.
Karaoke Mugen stores its user data :
- In the
KaraokeMugenfolder at the root of your user folder (
/home/<username>on Linux) if you used the Karaoke Mugen Installer.
- In the
appfolder at the root of the application if you used a portable package.
Karaoke Mugen stores its data in a PostgreSQL database in the
KM’s binary package includes a PostgreSQL server launched along with the app, so you don’t have to worry about it. You can still use your own PostgreSQL server if you’d like by following the instructions in the configuration section.
When updating Karaoke Mugen, the database is also u pdated automatically.
Here are the command line options for Karoke Mugen
--cli: Starts Karaoke Mugen without any Electron window.
--config file: Specify a config file to use. Replace
filewith any file you’d want to use instead of
--debug: Displays debug messages in the console (these are normally only visible in the log files)
--dumpDB: Creates a database backup in the
karaokemugen.sqlfile and closes the app.
--forceAdminPassword <password>: Change the admin account’s password. Replace
<password>by what you want to set it to.
--generate: Generates a database then quits. This will overwrite the database if it exists.
--help: Displays a help message
--kill: Stops another KM app running.
--noAutoTest: Used with
--test, doesn’t launch tests automatically after init.
--noBaseCheck: Do not check base files on startup. It allows for a faster startup if you’re sure your files have not changed.
--noMedia: If used with
--validate, this won’t throw errors if video files can’t be found. A single warning message will be displayed, at least.
--noBrowser: Does not try to open a browser on launch.
--noPlayer: Do not start up the player on startup to save some time. The player will be started by KM whenever you’ll need it.
--profiling: Displays profiling data in console
--reset: Resets all user data. Warning, this will remove EVERYTHING, users, playlists, etc.
--restoreDB: Restores a database backup from the
karaokemugen.sqlfile and closes the app.
--sql: Enables SQL logs (in debug)
--strict: If used with
--validate, this will throw errors if .kara files are modified during the generation. (this means one or more metadata are wrong/missing)
--test: Runs in test mode, used with the unit tests ran via the
yarn testcommand (only for devs.)
--updateBase: Updates the karaoke base in your data folders and triggers a new database generation.
--updateMediasAll: Only updates media files.
--validate: Tests and validates karaoke found in the data folders (
app/databy default). This is already done through generation. The only difference here is that it doesn’t touch your existing database and can be faster.
--version: Displays current version
Karaoke Mugen uses a configuration file called
config.yml located in its data folder.
If this file doesn’t exist, it will revert to default settings. You can see which are these settings by reading the
config.sample.yml file provided.
When you modify a setting via the admin panel a
config.yml file is written (or modified if it exists already) with the new settings, but not everything can be configured from the interface.
This section describes the app’s config file. You shouldn’t have to touch it yourself except for advanced use. You can edit most settings through the operator interface. More advanced options are available via the system panel.
General settings are stored here
FirstRun: Set to
falseby Karaoke Mugen to remember it’s not the first time the application has been run. If set to false, tutorial won’t be triggered, and admin password won’t be reset.
JwtSecret: Secret identifier used to salt user authentification tokens
InstanceID: UUID defining your instance. Do not reveal it to anyone.
Language: Three-letter code for the application’s language.
Online settings are stored here.
AllowDownloads: Boolean allowing you to enable/disable song downloads. If it’s disabled, the app won’t download any media and will stream them instead
ErrorTracking: Boolean allowing you to enable/disable error tracking. All error reports are sent to our sentry.io account.
true, the popular songs list in the public interface will try to fetch most popular songs from the different repositories you’re connected to.
Host: Karaoke Mugen Server hostname to connect to for online functionality. This will also replace the URL displayed on the player’s screen. By default it’s
MediasHost: HTTP path where to seek medias if they can’t be found locally. This is checked before the repository’s URL, in case you want to have a local cache server for example.
Port: Defines which port the app should use to connect to KM Server. Mainly used for debugging.
Remote: Defines if the instance is available remotely via the proxy system defined in the
Hostoption. This allows you to share access to your Karaoke Mugen instance without exposing ports on your network.
Stats: Sends (or not) usage satistics to Karaoke Mugen Server.
undefined: User will be asked to make a choice on startup
false: No data will be sent.
true: Stats will be sent.
Users: Allows user to create and login online accounts. -
false: Users will only able to use local accounts. if an online account is already created on your instance, its name will become
firstname.lastname@example.org. For example
true: Users can connect with their online accounts.
DisplayActivity: Boolean. Displays your karaoke activity on your Discord profile. It’ll show if you’re singing or not and on which song.
Defines what is going to be automatically updated :
All values are at
true by default.
App: Checks if an update is available.
Intros: Should intros be updated automatically from Gitlab?
Jingles: Same with jingles.
Web interface settings
Mode: Interface mode
0: Interface is closed to all users except admins
1: Interface is restricted. Users cannot add songs anymore and can only see the currently playing song and playlist.
2: Interface fully operational (default)
ShowAvatarsOnPlaylist: Boolean. Displays avatars or not on playlists in the interface.
AllowGuestLogin: Boolean. Allow guests to login to your app. Default
AllowCustomTemporaryGuests: Boolean. Allow guests to specify a name when they first login instead of using the app’s default guest names. Default
WelcomeMessage: String. Welcome message for your instance.
Karaoke session specific settings
AutoBalance: When adding a song to the current playlist, Karaoke Mugen will try to apply the “balanced” shuffle method to the playlist.
Autoplay: If no song is being played, playback will start as soon as a song is added to the list.
false: Starting playback is manual (default)
true: Playback automatically starts if a song is added
ClassicMode: If enabled, playback will stop after each song, allowing only the admin or the user who requested the next song to start playing again from their device.
false: Classic mode disabled
true: Classic mode enabled
false: No preview video will be created
true: At startup, Karaoke Mugen will verify if some songs need to have their video preview generated. If some previews are missing, KM will create them with FFMPEG. This can last for a while seeing how many songs with have in the database at the moment. Preview creation cannot be interrupted, but if you close KM and start it again, it will resume where it left off.
MinutesBeforeEndOfSessionWarning: When a session has its end time set, a warning will be displayed on the operator interface X minutes before its end.
false: Public karaoke. User submissions go to the public playlist.
true: Private karaoke. User submissions go to the current playlist. (by default)
ProgressBarDock: (boolean) Displays a progress bar for playback and database generation in the macOS Dock or Windows task bar.
false: Playback stops when reaching the end of the current playlist (by default).
true: Playback continues by looping through the playlist.
false: Smart Insert is disabled.
true: Smart Insert is enabled when in
privatemode. this will favor people who haven’t added many songs, for example.
Here are stored your enabled/disabled collections (as Tag IDs).
Collections: c7db86a0-ff64-4044-9be4-66dd1ef1d1c1: true # Otaku/Geek efe171c0-e8a1-4d03-98c0-60ecf741ad52: true # World 2fa2fe3f-bb56-45ee-aa38-eae60e76f224: true # Shitpost
false: No QR Code or URL will be displayed during song playback.
true: Connection information is displayed (default)
QRCode: Display QR Code between pauses
Message: Message to display next to the interface URL. Examples : - 1 euro per song!
- Wifi network: Jonetsu
Host: If empty, your IP address will be automatically detected, but this detection can sometimes fail : this setting allows you to force a specific IP to use.
Enabled: Public votes
Choices: Number of songs to suggest in the poll
Timeout: Poll duration. Poll will end at this many seconds, or before the last 10 seconds of a song.
A freed song doesn’t count anymore towards a user’s quota.
Songs: Number of songs someone can suggest in public or private mode.
Time: Time bank in seconds for every user
Type: Quota type to use. This is checked when someone tries to add a song.
0: No quota
1: Number of songs
2: Time bank
FreeAutoTime: Time in minutes before a song is automatically freed (60 mintues by default)
false: Likes won’t allow users to get their songs freed.
true: Users who have a “liked” song get it freed from their quota.
FreeUpVotesRequiredPercent: Percentage (0-100) of likes required to get a song freed. It’s the percentage of people marked as connected to the app at a given time.
FreeUpVotesRequiredMin: Minimum number of likes required for a song to be freed.
The Streamer Mode displays poll results during song pauses, and can also allow Twitch chatters to submit their votes. It also adds a configurable pause inbetween songs.
falsedepending on if you want that mode or not
PauseDuration: In seconds.
falsedepending on if you’re using Twitch Chat or not
OAuth: Your OAuth token for Twitch
Channel: Twitch channel for the bot to join
false: Videos aren’t blurred
true: Videos are blurred when the song contains a “warning” type tag.
false: The window has no borders (looks smaller)
true: The window has borders and a titlebar.
ExtraCommandLine: String added to mpv’s command-line. Only use if you know what you’re doing.
FullScreen: This setting is ignored if
PIP.Enabledis set to
false: Player is in windowed mode (default)
true: Player is in fullscreen
no: Hardware decoding disabled
yes: Force hardware decoding. Depending on your hardware, drivers, and the video played, it could have negative effects or even crash the player.
auto-safe: Default. Only enable on known working combinations of video codecs and hardware. Check mpv documentation to know more
false: Keyboard Media keys are disabled
true: Keyboard Media keys are enabled. They allow controlling the player.
false: Disable live comments on screen
true: (default) Enable live comments on screen. This is only usable with Twitch.
false: Monitor is disabled (default)
true: The monitor is displayed. It’s a second player window synced with the first one. It allows the karaoke operator to see what’s being played on the main screen.
mpvVideoOutput: You can specify a video driver for mpv here. If under Windows you see a blue window when launching Karaoke Mugen, put
Screen: screen number on which mpv should display your karaoke.
0: first screen (main screen) (default).
1: second screen.
2: third screen.
9: Let the player choose
false: mpv won’t stay on top of other windows
true: mpv will stay on top of other windows (default)
Volume: From 0 to 100, mpv’s starting volume.
Avatar: Display a user’s avatar in the bottom right corner with song information on screen.
false: Do not display avatar picture
true: Display avatar picture (
Nicknameneeds to be
false: Player won’t display nickname and avatar
true: Player will display nickname of the person who requested a song.
false: Random quotes aren’t displayed when the KM version banner is displayed
true: (default) Random quotes are displayed
false: No song information is displayed at the beginning and end of a song. If this is disabled,
true: (default) Song information is displayed
SongInfoLanguage: A ISO639-2B language name. In addition of the standard ones, KM also supports
qjrfor Japanese Romaji.
Size: if PIP mode is enabled, this is the percentage of the screen in size the player window should cover.
PositionX: Defines mpv’s horizontal position by default
PositionY: Defines mpv’s vertical position by default
AllowDuplicates: A song can be added more than once if this setting is set to
true(only on non-public playlists)
none: Do not do anything, karaoke ends.
random: Play random songs from the library
repeat: Go back to the beginning of the playlist
MaxDejaVuTime: A song is marked as “deja vu” if it’s been played less than xx minutes ago (60 by default)
RandomSongsAfterEndMessage: Si activé, affichera un message invitant les gens à ajouter des chansons à la liste de lecture courante lorsque l’action de fin de playlist est
For every item there are three settings :
Enabled: Enable or disable the media with a boolean.
Interval: (Jingles and sponsors only) Number of songs before displaying these
Message: An optional message to display on the screen while the media plays
For sponsors and jingles :
Interval: Number of songs before that media is played
Medias can be
Encores. Example :
Intros: Enabled: true File: PS1-Nanami.mp4 Outros: Enabled: false File: Byebye.mp4 Encores: Enabled: false File: encoru.mp4
false: Mystery songs are visible (default)
true: Mystery songs are hidden, they won’t appear in a playlist to the public
false: Songs added by admin are set to mysterious automatically
true: Songs added by admin are visible
false: Songs added by public are set to mysterious automatically
true: Songs added by public are visible
Labels: Array of labels for mystery songs. Like “???” or “Mystery song!” or “Surprise”…
FrontendPort: Network port to use for KM’s interface.
These are the paths to various binaries needed by Karaoke Mugen. Each binary has three settings :
Linux. Binaries are
Postgres it’s the folder where all binaries should be available. For the others, an executable is expected.
System: Binaries: Player: Linux: /usr/bin/mpv OSX: app/bin/mpv.app/Contents/MacOS/mpv Windows: app/bin/mpv.exe
How to access your database. You can usually leave all the defaults. If you use your own PostgreSQL server, put
false and modify whatever is needed (like the password).
superuserPassword aren’t used in that case.
System: Database: bundledPostgresBinary: false database: 'karaokemugen_app' host: 'localhost' password: 'musubi' port: 5432 schema: 'public' superuser: 'postgres' superuserPassword: null user: 'karaokemugen_app'
Everything’s pretty explicit. Edit the settings you need to.
Jingles: Folders where to look for jingles.
Intros: Folders where to look for intros.
Sponsors: Folders where to look for sponsors
Outros: Same thing for outros
Encores: … and encores videos!
All your repositories are configured here.
true: Repository will be used for generation and online updates
false: Repository will NOT be used for generation and online updates. Its songs won’t appear in database anymore.
Name: Repository name. Must match the name in the
.tag.jsonfiles present. For online repositories this has to be a working domain name.
true: The repository is an online one and will be queried during online updates
false: The repository is local and only contains local songs not meant to be uploaded to an online repository.
BaseDir: Base directory where your online repository will be downloaded, folder where
tagsfolders can be found.
MaintainerMode: Repository maintainer mode, used to tell that the repository is managed by another software, which prevents Karaoke Mugen updating the repo.
AutoMediaDownloads: Define the behavior of media downloading
all: As soon as a new video is available, it will be downloaded. As such, all the base is available without Internet.
updateOnly: (by default) No video will be downloaded, but if a video you already downloaded was updated on remote, it will be updated locally.
none: No video will be downloaded. Everything will be manual.
Path: Paths for each file type :
Medias: Path to medias files, they will be downloaded to these folders.
Author: Author name for commits in this repository
ProjectID: Gitlab Project ID
URL: Repository’s Git URL
Username: Git Username
Password: Git Password
Port: Media host’s FTP port
Host: Media hsot’s name
Username: FTP username
Password: FTP password
BaseDir: FTP base directory
Some paths here can have multiple entries. These are
Tags. All those paths are relative to the data folder but you can still specify absolute paths.
When searching for a file in these, Karaoke Mugen will go through every entry of the list.
Avatars: Folder where avatars are stored
Backgrounds: Folder where backgrounds are stored.
BundledBackgrounds: Folder where KM will extract its bundled backgrounds. This is cleaned up on each startup.
DB: Folder where the database(s) are stored.
Import: Folder where karaokes can be imported from
Previews: Folder where previews are stored (about 500Kb per song)
SessionExports: Path where to store Session .csv exports.
StreamFiles: Path where to store text files for streaming
In addition to the various customization settings you’ll find in the config file, you can change a few other things in Karaoke Mugen to fit your needs :
By default, Karaoke Mugen will use its own wallpaper depending on which version you’re using. You can still specify yours through the backgrounds page in the system panel.
Karaoke Mugen will display them randomly at every pause.
By default there’s no background music bundled with Karaoke Mugen. You can put your own in place though by going through the backgrounds page in the System Panel. Most formats (mp3, m4a, ogg, flac, wav…) are accepted. They’ll be read during pauses between two songs.
If a song has the same name as a picture file (without its extension) it’ll be read as soon as the image file will be selected. If no music is found with the same name, a random one will be choosen.
If you want to put a little spice in your karaoke, you can play jingles or sponsors every XX songs (via the
Medias settings). There are also introductions, outros, and encores. All these videos are stored in the data folder
The Karaoke Mugen community has a few jingles they share, but you can use yours. If an
.ass file with the same name as a media file is present, it’ll be played along.
These medias can be downloaded on our Gitlab. Place them in their respective folders once unzipped. They are automatically downloaded by Karaoke Mugen, too.