Hi I'd like to correct this, if you have enabled "Video Bridge Encryption" in Brave Talk, this is not the case. Calls of up to 20 participants would be encrypted, using keys locally exchanged among participants. The SFU wouldn't be able to decrypt these video/audio streams. Of course, as would be standard and expected, the SFU would decrypt the transport layer of encryption, but wouldn't be able to decrypt the second layer of video/audio encryption. You can find more about the current underlying Jitsi encryption implementation here: https://jitsi.org/wp-content/uploads/2021/08/jitsi-e2ee-1.0....
Once the moderator enables "Video Bridge Encryption" it is automatically enabled for other participants. I believe that if a 21st user tried to join it would error out, but let me confirm this with the 8x8 team.
Update, I checked with the 8x8 team, and it will warn from 21 to 25 users, and then disable when the 25th user joins. You'll see the green video bridge encryption notification turn off at the top at that point.
