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Re: Tracks in multiple Stream . Re: Teasing apart the data API questions

From: Cullen Jennings <fluffy@cisco.com>
Date: Thu, 17 May 2012 13:03:11 -0600
Cc: public-webrtc@w3.org
Message-Id: <2155998A-34B9-4C30-A536-FA9DD8B47439@cisco.com>
To: Randell Jesup <randell-ietf@jesup.org>

Sure, that all makes sense along with the examples you and Harald raised but I should have been more precise in my original email. I'm talking about in the context of a single PeerConenction objects. In all these example there would still only need to be one of theses media streams added to a given PeerConenction object. So, I'm still at the same place of not seeing why we need this that I was when I started this thread...

On Apr 23, 2012, at 3:30 PM, Randell Jesup wrote:

> On 4/23/2012 5:08 PM, Harald Alvestrand wrote:
>> On 04/23/2012 05:01 PM, Cullen Jennings wrote:
>>> On Apr 15, 2012, at 6:42 , Harald Alvestrand wrote:
>>> 
>>>> B1: Should the data "channel" be similar to a MediaStreamTrack,
>>>> including the ability to be part of one or more MediaStreams,, be
>>>> connected to consumer entities, be muted, and so on?
>>> I'd like to back up and talk about normal Tracks being attached to
>>> more than one stream. I don't think this makes any sense and certainly
>>> adds to implementation complexity. Lets say we have tracks A , B, and
>>> C. And tow streams S1 and S2. If A and B are in S1, and B and C are in
>>> S2, it effectively mens all three are synchronized so why not just
>>> have all there in a single stream?
>>> 
>>> I am missing the use case for a single track in more than one stream.
>> The classical example is when one uses GetUserMedia to get audio and
>> video, and one wishes to extract only the video stream and show it in a
>> preview element, while both the audio and video should be sent to the
>> remote site via a PeerConnection.
> 
> Correct.  Or attach audio from a single mic to two media streams, one for the front camera and one for the rear.  And the two streams may have totally different destinations (different peerconnections, or local display per Harald).
> 
> -- 
> Randell Jesup
> randell-ietf@jesup.org
> 
Received on Thursday, 17 May 2012 19:03:41 UTC

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