- From: Peter Thatcher <pthatcher@google.com>
- Date: Thu, 3 Sep 2015 21:28:06 -0700
- To: Cullen Jennings <fluffy@iii.ca>
- Cc: "public-webrtc@w3.org" <public-webrtc@w3.org>, Harald Tveit Alvestrand <harald@alvestrand.no>
- Message-ID: <CAJrXDUH4HumNybdkPP_8vUr6=o=O=RuQcR9Z5K_tmR2qdJcw1w@mail.gmail.com>
#4 came up in ORTC, and we went through a number of ideas and designs, and in the end, it was a complex API to get right, and all of the developers involved that were asking for it basically said "this isn't that important; we can live without it". So, I agree with Harald's conclusion on #4. And all of this conclusions, for that matter. As for it being a MUST in the API, the chairs made a clear position that if something is going to be part of 1.0, then it MUST have a PR by the time of the f2f. Is there such a PR for CSRCs? On Thu, Sep 3, 2015 at 9:56 AM, Cullen Jennings <fluffy@iii.ca> wrote: > > I think #4 is MUST have and there was consensus to put it in. I don't see > consensus to remove it. This is critical for building conferencing systems > where there is rapid indication of which parties are adding sound to the > conference. This is a feature many developers ask for. > > I think that we must have a way to have Client-to-mixer level sent by in > RTP. If the default is to always offer this in the SDP and accept it if > offered, and do it if negotiated in SDP, then I don't think that a controls > surface to turn that on and off is needed. (people can mangle SDP if they > want to turn it off). But if we decide the default is not to always offer > this, then I think the #276 is needed. > > I don't care too much about #6 but it pretty trivial and don't have any > objections to it going in > > > > On Sep 1, 2015, at 10:03 AM, Harald Alvestrand <harald@alvestrand.no> > wrote: > > > > We have 3 issues that relate to CSRC information in our tracker. > > We've had debate about them - most recently from July 31 to August 18 - > > but very few people have contributed, and there seems to be no strong > > consensus. > > > > The tracker issues are: > > > > #4 Need API to read the CSRC on received tracks > > #6 Need API to receive mixer to client audio level information for a > track > > #276 Control to turn on Client-to-Mixer Audio Level in offers > > > > The contributors and their (no doubt mischaracterized) positions from > > the August mail thread are roughly: > > > > - Bernard Aboba has called CSRC information "not a must have" > > - Cullen Jennings has called CSRC information "useful for a bunch of > things" > > - Inaki Baz Castillo has said that "the usecase is **really** big" > > - Harald Alvestrand (me) has said that "I don't regard this as an > > important use case". > > > > There was also a spate of debate about this in February, with a few more > > participants. > > > > Given that: > > > > a) there doesn't seem to be a consensus that CSRC information is > important > > b) we're trying to limit the scope of 1.0 features that we don't have > > consensus to add > > c) generation of volume information is hard to retrofit later (old > > clients wouldn't generate it) > > d) new interfaces for retrieving information are not so hard to retrofit > > later > > > > I'm suggesting the following disposition for these issues: > > > > #4: We don't add any such API in WebRTC 1.0 > > #6: We don't add any such API in WebRTC 1.0. > > #276: We find a convenient place to say that implemementations MUST use > > this feature (that is, send volume information) if negotiated > successfully. > > We don't add any API for turning this functionality off in WebRTC 1.0. > > > > This will give us a situation where volume information is flowing to the > > mixer, and the mixer can take advantage of it if desired - and at a > > later stage, we can add APIs for reading the information that already > > flows in the system on incoming flows. > > > > Does this seem like an appropriate disposition given where we are? > > > > Harald > > > > > > > > >
Received on Friday, 4 September 2015 04:29:15 UTC