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Congestion control seems pretty important for videoconferencing, especially given that these are mobile apps that are especially prone to signal degradation/tow

by jmgao 6y ago

Congestion control seems pretty important for videoconferencing, especially given that these are mobile apps that are especially prone to signal degradation/tower switching that will drastically affect throughput. I'd argue that being able to fall back to reliable text chat when your network is imploding and video/audio is unusable is a core feature of web conferencing tools.

tptacek 6y ago
This isn't the channel used for videoconferencing!
- jmgao 6y ago
  TIL! That definitely makes the use case a lot more dubious. Doing some googling, I'm wondering whether the original intent was to switch everything over to SCTP: data channels seem to have used the same protocol as media pre-2014. Maybe no one got around to it and things ossified?
  - Sean-Der 6y ago
    Congestion Control still works though between the two protocols! SCTP and RTP try and respect each other. It follows the same rules as having multiple people using WebRTC on the same internet.
    - tptacek 6y ago
      That's... besides the point? The argument isn't that SCTP is a bad protocol.