I just installed jitsi-meet on a raspberry pi4B 4Gig and it works like a charm. It did take me half a day though. Here are my notes (I document for my own retracing purposes) which might help you along the way. I have 1Gbit connection and it seems to be working quite decently with a few jitsers, no idea when the upper limits are reached. I can try with my lab.
Best and good luck.
Installing Jitsi meet on a Raspberry Pi4B
First, install Ubuntu for Raspberry. I used the 18.04.4 version for Raspberry pi4.
If you are on Ubuntu (18.04) yourself: Important is that you have to click on the .xz file after download if making the SD Card image on an Ubuntu (18.04) machine. If you first start the disks program and then choose the image, the SD Card won’t be working. Click on the .xz file, the disks program is launched and then you choose the SD Card as the destination for image restoration.
When at it, I also set the screen size right and slightly overclocked the PI by inserting the following in the file /system-boot/usercfg.txt on the SD Card still in my computer.
hdmi_cvt=1920 1080 60 3 0 1 0
Once that is done insert SD Card into Raspberry PI, connect to network, fire-up and change the user password.
Change to sudo for the remainder:
sudo su -
Wait for the software to be up to date.
Create a gpg key
Follow the instructions. This may take a really long time. Just wait until you are done.
Then follow the instructions as they are explained in the very nice tutorial on the jitsi news section: new-tutorial-installing-jitsi-meet-on-your-own-linux-server
I would post my notes, but this forum let’s new users only post two links, so complain to them for this limitation.