Related, the WARP streaming protocol, as a candidate for what would ride over MoQ: https://datatracker.ietf.org/doc/draft-ietf-moq-warp/
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WARP's development (at the IETF) up until now has been largely spearheaded by Will Law, but it's an IETF spec so anyone can participate in the working group and help shape what the final standard looks like. WARP is a streaming format designed mainly for live streaming use cases, and builds on a lot of experience with other standards like DASH. If that doesn't fit your use case, you can also develop your own streaming format, and if it's something you think others could benefit from, too, you could bring it to the IETF to standardize.