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Re: How to set the video quality sent to a peer

From: <ag@ag-projects.com>
Date: Tue, 18 Mar 2014 15:48:12 -0300
Cc: public-webrtc@w3.org
Message-Id: <1BF94BAA-B5B0-48C8-B6B5-22542C4561BF@ag-projects.com>
To: giuseppe pes <giuse88@gmail.com>
See this

http://en.wikipedia.org/wiki/Scalable_Video_Coding

Adrian

On 17 Mar 2014, at 14:10, giuseppe pes <giuse88@gmail.com> wrote:

> I need a bit of help with this new amazing technology called webRTC.
> 
> Let's consider this scenario for a WebRTC mesh network with three peers.. The Peer A has an HD stream from its cam and it is sharing with the other 2 peers B and C. B and C are not sending any data. The connection between A and B is rather good and the peer B can enjoy the video at full HD. While the connection between A and C is not as good as that between  A and B and it does not support an HD stream, thus B is not having a smooth video stream. Nevertheless, the connection between  C and A  would smoothly support a lower quality video, for instance 640x480.
> 
> I would like to provide a smooth video experience to both clients. I could reduce the quality video of the source calling getUserMedia with a lower quality but this is not a good solution because it would reduce the quality of the video even for the peers that support HD (B) .
> 
> What I would like to have is that the source peer ( A ) gets a stream at its maximum quality, in this case HD. Then the quality of the video to be sent to a peer is chosen according to the connection characteristic between the source and that peer. In our previous example :
> 
> 
>                    HD (1280x720)
>               /------------------->     B 
>      A       /
>   stream HD /
>  (1280x720) \  
>              \    HD (640x480)
>               \------------------->     C
> How can I achieve this result? Can I modify the SDP descriptor to set the video resolution just for that session?
> 
Received on Tuesday, 18 March 2014 18:49:36 UTC

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