Here is a list of missing features for the RtcWeb requirements as of Nov 10, 2011. Note that none of this is set is stone, so this list may change in the future.
- SRTP, so we can support the RTP/SAVPF profile) (RFC 5124 + RFC 3711)
- Including DTLS-SRTP (RFC 5764)
- RTCP session bandwidth modifiers (RFC 3556)
- rtcp multiplexing (RFC 5761)
- Reduced size RTCP (RFC 5506)
- Support for multiple stun/turn servers (in libnice)
Not required, but recommented:
- RTP Header extension for rapid sync (RFC 6051)
- Mixer levels in RTP hdrext (currently in draft)
Not exactly in Farstream, but related:
- RFC 6222: Guidelines for Choosing RTP Control Protocol (RTCP) Canonical Names (CNAMEs)
Not yet defined enough to implemenent:
- RTP session multiplexing (multiple drafts are circulating)
- Better congestion control
- May include RTCP TMMBR/TMMBN
- Some kind of FEC... maybe
References: