> Google Meet is a video conferencing app, not a telephone replacement.
Great, I really don't care about Google's WebRTC app of the month, it is unlikely to be with us in 10 years.
Your root question about why Google hasn't supported Safari with their Meet product likely boils down to the codec wars, as without VP8/VP9 support, Safari does not support the WebRTC standard. A reasonable thing Safari could do is rank codecs by power usage, prioritizing H.264 front and center.
Another take is the failing tests listed here, Google could easily depend on a component that Safari has not implemented (once again not WebRTC spec compliant): https://wpt.fyi/results/webrtc?label=stable&aligned
> In any case, if you want better than H.264, how about H.265
H.265 is a patent encumbered, licensed codec that is only supported by Safari & Edge (if you download the H.265 codec manually on Win10). At this point, Apple, Mozilla, Google, Microsoft and others are working on AV1 as a successor: https://headjack.io/blog/hevc-vp9-vp10-dalaa-thor-netvc-futu...
> I have no idea if WebRTC allows the endpoints to negotiate alternative codecs, and I'm having difficulty finding the answer to that.
You can send literally anything in the SDP that you want, WebRTC is a forklift of traditional SIP onto the web, but with things like TLS enforced (otherwise idiots like the entire existing VoIP industry will run all signaling & calls over UDP with no crypto, then claim its "secure"). The only limitations you have are the codecs supported by your device, though you could totally write your own fairly complex codec in javascript :P