one webtransport is can create many consume to receive audio and video，but if the data is form different source（etc，two client），this is any problem？like lip sync？
in this case，is user one transport for all user or one transport for one user？
You can go with both ways, webrtc doesn’t limit that but the best way i found is 1 transport per user and the more appropriate is 1 transport per stream if you are using piping between routers.
The issue with 1 transport for all users is that it causes lag in video streams especially when all users are on same network.
You can read more about it here:
thank you !!
Kindly do mark appropriate answer as solution for the ease of others, thank you