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> Jitsi Videobridge passes everyone’s video and audio to all participants, rather than mixing them first.

This seems excessive. What would this mean for the bandwidth requirements for each participant?

This the current most used model. It trades having to do expensive mixing on the server with more bandwidth and vise streams on the clients.

Since each participant sends several resolutions, each receiver will only get what they ask for. In a “gallery” style view, each video is not in full HD, for example.

I had no idea. It's no wonder that things rapidly fall apart when a coworker visits their parents with bad internet.

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