- From: Iñaki Baz Castillo <ibc@aliax.net>
- Date: Thu, 23 Oct 2014 00:34:01 +0200
- To: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>
- Cc: Bernard Aboba <Bernard.Aboba@microsoft.com>, "public-ortc@w3.org" <public-ortc@w3.org>, "pthatcher@google.com" <pthatcher@google.com>
2014-10-22 23:39 GMT+02:00 Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>: > From an implementation point of view I would prefer to move out of the > clunkiness of WebRTC 1.0, and be able to de-multiplex per ssrc only, without > having to take a look at the pt. +1 This is just layer hierarchy: IP -> UDP -> RTP -> SSRC -> PT The issue/limitation/bug in SDP is that payload-types must be unique within a single m line (whatever a m line represents which nobody knows nowadays). That's just a format/syntax limitation/issue in SDP. It makes sense at 100% that the SSRC is inspected first (so we get the "stream") and then we inspect the payload-type, so two different SSRCs over the same transport should be able to carry same payload-type values (regardless it means "vp8" in SSRC-A and "RED" in SSRC-B). -- Iñaki Baz Castillo <ibc@aliax.net>
Received on Wednesday, 22 October 2014 22:34:48 UTC