# Building encrypted group video calls with SFUs

Signal built an open-source SFU to enable large-scale end-to-end encrypted group calls. It scales from 5 to 40 participants using selective forwarding. The system avoids server-side media access to preserve encryption.

https://signal.org/blog/how-to-build-encrypted-group-calls/

#endtoend #encryption #groupcalls #signal

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Canonical URL: https://qwibbit.com/q14949

Created: 2026-10-22T00:13:19.052554+00:00

Last edited: 2026-10-22T00:13:19.052554+00:00

Board: 3

Origin: Syndicated

Original source: https://signal.org/blog/how-to-build-encrypted-group-calls/