When I use Jitsi in Firefox (Linux rel. 82.0), my webcam, which is able to deliver up to 720p @30fps, is adjusted to 640 x 480px.
When I use Jitsi in a Chromium Browser, automatically my camera is adjusted to 720p.
I want to know, whether there is any manual adjustment for it, especially when used in Firefox browser. I have not found any. I like Firefox due to safety reasons.
Further I want to use Jitsi with many different partners, most of them with nearly no technical background. Therefore I cannot restrict my partners to use only Chromium browser.
I also found, that Jitsi also does not work with Midori browser which is based on Safari engine. Maybe, that Apple users are excluded from Jitsi.