Quoting o1bigtenor via Dng (dng@???):

> Asking to confirm - - - - so Firefox won't work?

Some folks have no problems with particular Firefox versions (talking to
Jitsi Meet), but it's not officially recommended as per
https://github.com/jitsi/jitsi-meet/wiki/Browser-support .[1]

tl;dr: Jitsi Meet relies on browser support for WebRTC (the IETF
videoconferencing protocol suite) and some Javascript. Reportedly, the
best WebRTC report is in Chromium and browsers that are based on its
Blink rendering engine. E.g.:

      o  Chromium
      o  Google Chrome
      o  Microsoft Edge v. 79.0.309 or later
      o  Brave Browswer
      o  Opera Browser v 15 or later

Firefox, some others probably work if recent, but not guaranteed.

_Or_, use one of the bespoke Jitsi Meet clients, instead of a browser.



Longer version:
Generically, Web browsers and _versions_ of Web browsers that have good
WebRTC support (and a good Javascript engine) should do well. Which is
why Chromium/Blink and derivatives are a good choie. Problems with other
browser types/versions including high load are sometimes reported.

The Jitsi project also has mobile clients (open source) plus
an odd desktop client that can, if wished, be used instead of a Web
browser. My notes:

o Jitsi Meet Client (28MB APK) for Android 5.0 or newer, published via F-Droid:
https://f-droid.org/en/packages/org.jitsi.meet/

o Jitsi Meet Client for Android, published on Google Play Store
https://play.google.com/store/apps/details?id=org.jitsi.meet

o Jitsi Meet Client for iOS, published on Apple iTunes Store
https://itunes.apple.com/us/app/jitsi-meet/id1165103905

o Jitsi Meet Electron client (86MB binary: Linux x86_64, MacOS, MS-WIndows),
desktop client crafted as a special-purpose single application file
using the Electron Javascript engine, which in turn is constructed from
the Chromium Web browser and the Node.js runtime Javascript environment.
https://github.com/jitsi/jitsi-meet-electron/releases


[1] Browser support is a moving target. That page currently reflects
status as of May 3, 2020, and may be unmaintained.