The "videostreams" value you see in the COLIBRI stats is just an
estimation of the total number of streams the bridge forwards. It
doesn't take into account any receive-only endpoints (it assumes that
everyone is sending), so it grows quadratically as you observed (unless
you enable lastN).
Aha great, so it's not even a problem? So imagine i have 300 people, 1
sending webcam + screenshare, 299 receiving and watching without
sending anything. It will show 300*300*2=180000 'videostreams' and
that's still fine? I was worried about the number of threads in the
same colibri stats, which got over 400 with just 11 clients and 242 of
those virtual 'videostreams' in, which made an impression that each
that 'videostream' spawns a thread. Hope i am mistaken.