So Twitch has a new “low latency” mode. Except by low latency they mean 2-3 seconds, whereas before it was more like 10 seconds. And for some reason they’re still using HLS. Meanwhile, Mixer has been sub-second for a long time… which is still an order of magnitude over ideal.
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ah. of course, for Internet streaming where multicast isn’t possible and the alternative is HLS over regular TLS, that should make less difference…
Yeah, but you're still dependent on a much messier multi-stream UDP protocol (with all the NAT hole punching and firewall bypassing stuff that brings), ICE/STUN/TURN, and all the complexity that brings.
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and even if it works for most of your users, I feel a need to emphasize that the relevant hole-punching _does not always work_, so you're gonna need an HLS fallback, which means muxing two variants of everything (idk how RTP works) which sounds heckin' expensive
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RTP doesn't even mux, you get two UDP streams, one for audio and one for video. Unless you do what ISPs do for TV over IP, which is also what we did for multicast: shove MPEG-TS into RTP, which is the only way to get a multicast stream that works in VLC with zero configuration.
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