What implementations are available? Low latency high efficiency streaming sounds extremely topical. Random detail, cool that TimeSource is specified. There's n

What implementations are available? Low latency high efficiency streaming sounds extremely topical. Random detail, cool that TimeSource is specified. There's no implementation, it's a protocol & url. I seem to recall there being an early wicg spec for doing this kind of thing, but just specifying ntp or what not would probably suffice, or webtransport+ntp, in the coming days.