Flutter app demo multiple call with WebRTC and SFUs Architecture

Dao Hong Vinh

Last update: Dec 5, 2022

Overview

Video Call Flutter App (SFUs Architecture) 📱

Description:

This is sandbox video call application using Flutter and WebRTC.

SFUs – Selective Forwarding Units

In this case, each participant still sends just one set of video and audio up to the SFU, like our MCU. However, the SFU doesn’t make any composite streams. Rather, it sends a different stream down for each user. In this example, 4 streams are received by each participant, since there are 5 people in the call.
The good thing about this is it’s still less work on each participant than a mesh peer-to-peer model. This is because each participant is only establishing one connection (to the SFU) instead of to all other participants to upload their own video/audio. But, it can be more bandwidth intensive than the MCU because the participants each receive multiple streams downloaded.
The nice thing for participants about receiving separate streams is that they can do whatever they want with them. They are not bound to layout or UI decisions of the MCU. If you have been in a conference call where the conferencing tool allowed you to choose a different layout (ie, which speaker’s video will be most prominent, or how you want to arrange the videos on the screen), then that was using an SFU.
Media servers which implement an SFU architecture include Jitsi and Janus.

Quick start

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Comments

error webrtc

Hello, when the second person enters and reaches this line, the program gets an error Can you help me with that? Thankful

It looks like we should define a track for addTransceiver as well

opened by rezadevelopers2 0
Not working

I have downloaded the code for testing. The codes work but it does not connect to other peers. Can you fix that? I have followed all the steps but it doesn't work.

Thanks

opened by amirjaufeeraully 0