Re: RTX support (RFC 4588)

On 21/10/2014 19:51, Peter Thatcher wrote:
>
>
> On Tue, Oct 21, 2014 at 1:15 AM, Sergio Garcia Murillo 
> <sergio.garcia.murillo@gmail.com 
> <mailto:sergio.garcia.murillo@gmail.com>> wrote:
>
>     Hi Peter,
>
>     Re. Session-Multiplexing support on ORTC. I am perfeclty fine, and
>     I think that makes sense, but on RTP-USAGE draft it says :
>
>         Receivers are REQUIRED to implement support for RTP retransmission
>         packets [RFC4588  <https://tools.ietf.org/html/rfc4588>].
>
>
>     So either we ask webrtc to narrow that requirement to support
>     ssrc-mutliplexing only, or we should explicitly state in the ORTC
>     draft that we doesn't support session multiplexing.
>
>
> ​Does that phrase mean there must be ​a way to send RTX, or there must 
> be all possible ways to send RTX?  It seems a bit ambiguous to me.  By 
> the way, I'm pretty sure none of the current WebRTC implementations 
> support session-multiplexing RTX right now (I'm sure Chrome doesn't 
> support it).
>

For me it reads that a receiver shall implement both session and ssrc 
multiplexing. I agree that session multiplexing RTX is useless in our 
context, so we should try to remove it from the spec.

Best regards
Sergio