Configuring audio in meet.jit.si

Jake_Roth · April 12, 2020, 6:07am

New user, looking at what’s available through the basic web portal for meeting creation - is there a way to define audio encoders/quality directly for conference calls set up this way, or is that something only doable if running a separate host?

xranby · April 13, 2020, 4:11am

You can tweak the audio configuration by adding

#config.disableAP=true&config.disableAEC=true&config.disableNS=true&config.disableAGC=true&config.disableHPF=true&config.stereo=true&config.enableLipSync=false

to the URL.

Jake_Roth · April 13, 2020, 5:06am

Is there a full list of the functional variables on GitHub somewhere?

xranby · April 13, 2020, 10:31am

Config settings are usually set in the jitsi-meet config.js on the server thus some of the config options are documented here:

github.com

jitsi/jitsi-meet/blob/master/config.js#L500-L521


// List of undocumented settings used in lib-jitsi-meet
/**
 _peerConnStatusOutOfLastNTimeout
 _peerConnStatusRtcMuteTimeout
 abTesting
 avgRtpStatsN
 callStatsConfIDNamespace
 callStatsCustomScriptUrl
 desktopSharingSources
 disableAEC
 disableAGC
 disableAP
 disableHPF
 disableNS
 enableLipSync
 enableTalkWhileMuted
 forceJVB121Ratio
 hiddenDomain
 ignoreStartMuted
 nick

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Audio filtering is done inside lib-jitsi-meet.
lib-jitsi-meet gets the configuration passed from the web server + the options passed in the URL.
Most of the audio filtering config options are undocumented,
Undocumented config options are listed and sometimes described in the lib-jitsi-meet sourcecode when and where they are used:

github.com

jitsi/lib-jitsi-meet/blob/master/modules/RTC/RTCUtils.js#L77-L90


// Disables all audio processing
let disableAP = false;


// Disables Acoustic Echo Cancellation
let disableAEC = false;


// Disables Noise Suppression
let disableNS = false;


// Disables Automatic Gain Control
let disableAGC = false;


// Disables Highpass Filter
let disableHPF = false;

github.com

jitsi/lib-jitsi-meet/blob/master/modules/xmpp/moderator.js#L149-L301


const config = this.options.conference;


logger.info(`Session ID: ${sessionId} machine UID: ${machineUID}`);


elem.c('conference', {
    xmlns: 'http://jitsi.org/protocol/focus',
    room: this.roomName,
    'machine-uid': machineUID
});


if (sessionId) {
    elem.attrs({ 'session-id': sessionId });
}
if (this.options.connection.enforcedBridge !== undefined) {
    elem.c(
        'property', {
            name: 'enforcedBridge',
            value: this.options.connection.enforcedBridge
        }).up();
}

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Jake_Roth · April 13, 2020, 9:23pm

Much appreciated; the only thing I’m not finding is a setting to force/allow specific bitrates for audio v. video.

RGEarley · May 21, 2020, 12:08pm

I’m new to Jitsi and one of the things I’m interested in is improved audio quality. Can someone clarify:

When overriding the server config file settings with the URL #config options, does that apply to everyone in the meeting or just to the user who used that URL?
Is there a way to change these settings when starting/joining from an iPhone/iPad?
Thanks

c10r0x · May 28, 2020, 6:54pm

@RGEarley

Modifying the config in /etc/jitsi/meet/domain.jitsi.com-config makes the changes for everyone joining the server. Passing “commands” via URL like https://domain.jitsi.com/EXAMPLEroom#config.disableAGC=true only changes the client side of things.
Not sure on mobile apps, I don’t mess with that yet.

RGEarley · May 29, 2020, 4:02am

Thank you c10@r0x