I think we should review this list:
And collect any others that are being used here because I know in practice we probably need to implement more than officially required.
I noticed video orientation is missing. Other ext are useful too even if not officially required yet.
5.2.5. Coordination of Video Orientation
WebRTC endpoints that send or receive video MUST implement the
coordination of video orientation (CVO) RTP header extension as
described in Section 4 of [I-D.ietf-rtcweb-video].
This header extension uses the [RFC5285] generic header extension
framework, and so needs to be negotiated before it can be used.
Header extension list
Fix for Issue #409
Should we add Abs-Send-Time to the header extension list (as a non-normative reference)? It is widely implemented.
Add abs-send-time extension
Add abs-send-time extension. Related to Issue #409