Re: [rtcweb] Call for Consensus on Use Case for Screen/Application/Desktop sharing

Stefan Håkansson LK <stefan.lk.hakansson@ericsson.com> Wed, 21 September 2011 07:37 UTC

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Date: Wed, 21 Sep 2011 09:40:07 +0200
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Call for Consensus on Use Case for Screen/Application/Desktop sharing
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On 2011-09-20 16:34, Emil Ivov wrote:
> На 20.09.11 14:58, Stefan Håkansson LK написа:
>> I think we should skip both these use cases for the time being.
>>
>> I think we have more than enough to design and agree on to get real-time
>> audio and video (with recording) and p2p data. There are design choices
>> to make and agree on all over the place (from user consent to RTP).
>
> I am not sure I understand the we-already-have-too-much-on-our-plate
> argument. If Desktop Sharing is declared optional then the specification
> could move at its own pace without blocking other specs or implementations.
>
>> Besides I think that the most obvious (WebEx-like if you want) use case
>> for A is document sharing and slide presentations - and we all know that
>> there are several such services available already. So the pieces to
>> build them are already available.
>
> We already have more than several ways of doing VoIP and video calls,
> many of which already work in browsers. Obviously, the argument hasn't
> prevented us from starting RTCWEB.

I should have said that "the pieces to build them are already available 
_in browsers without the need for using extensions or plugins_" or 
something similar - I think this is what is put out as the 
differentiating factor in the rtcweb charter.

Anyway, I seem to be rather lonely in my corner of the room, but I 
maintain my opinion that we should defer this to a later stage.

>
> Emil
>
>>
>> So my 2 cents say: let's push this into phase 2, and focus on getting
>> phase 1 out in a timely manner :) Sorry for not being enthusiastic.
>>
>> On 2011-09-19 09:02, Magnus Westerlund wrote:
>>> WG,
>>>
>>> There where some discussion in the Interim meeting last week about a
>>> Screen/Application/Desktop sharing support use case. My take away from
>>> the discussion is that this use cases is likely well enough understood
>>> to actually start a consensus call now. However, to us WG chairs it was
>>> clear that the use case in question actually needs to be split into two
>>> parts.
>>>
>>> A) Where the RTCWEB enabled browser can use a local application window,
>>> the whole desktop or a Screen as a media source that can be encoded and
>>> transported over the peerConnection for displaying/playback at the peer.
>>>
>>> B) Where a remote peer can provide one or more input types such as mouse
>>> and keyboard to control the local system, not only including the
>>> browser, but also other operating system resources. This clearly can
>>> only happen after additional consent, most likely on a per occasion
>>> consent.
>>>
>>> My interpretation is that A only allows for application sharing in
>>> conferencing contexts, like in the WEBEX session the Interim meeting was
>>> held with where we shared slides. Where the combination of A and B is
>>> providing for VNC/Remote desktop.
>>>
>>> Thus the question to the WG is the following.
>>>
>>> 1) Do you support or object the inclusion of use case A, B or Both in
>>> our Use case document?
>>>
>>> 2) Do you have additional comments for or against either of the use cases?
>>>
>>>
>>> As WG chair
>>>
>>> Magnus Westerlund
>>>
>>> ----------------------------------------------------------------------
>>> Multimedia Technologies, Ericsson Research EAB/TVM
>>> ----------------------------------------------------------------------
>>> Ericsson AB                | Phone  +46 10 7148287
>>> Färögatan 6                | Mobile +46 73 0949079
>>> SE-164 80 Stockholm, Sweden| mailto: magnus.westerlund@ericsson.com
>>> ----------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> rtcweb mailing list
>>> rtcweb@ietf.org
>>> https://www.ietf.org/mailman/listinfo/rtcweb
>>
>> _______________________________________________
>> rtcweb mailing list
>> rtcweb@ietf.org
>> https://www.ietf.org/mailman/listinfo/rtcweb
>>
>