Memory usage modeling

My experience:

  • Fresh computer start with Debian 10 CLI and jitsi-meet: Below 1GiB
  • 10 participants in a single room with full video: 1650 MiB (with an hour of use)
  • 20 participants in a single room with full video: 2900 MiB (with an hour of use)

What if there are 10 participants per each of 10 rooms?
Some predictable formula?