[thecleaner]

Does data channels over WebRTC enforce different semantics than say QUIC/Http2 ? I understand that the difference b/w TCP and WebRTC based comm would be application level transmission guarantee but does it really differ from UDP based HTTP implementations ?

[kwindla]

The biggest problem with sending media over data channels is that there's no good way to do bandwidth estimation. Data channels weren't designed to be used for media, and the current WebRTC spec (and javascript implementation) doesn't expose enough control of either the codec or the network stack to implement real bandwidth estimation and bandwidth control. This is presumably the main reason that Zoom's in-browser implementation is so limited in functionality.

There's a spec for RTP over QUIC [1]. It's really cool! But obviously very early days.

[1] https://datatracker.ietf.org/doc/draft-engelbart-rtp-over-qu...