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Re: [rtcweb] Codec control and SDP offer/answer frequency

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 24 August 2012 06:22 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "Markus.Isomaki@nokia.com" <Markus.Isomaki@nokia.com>, "harald@alvestrand.no" <harald@alvestrand.no>
Date: Fri, 24 Aug 2012 08:18:37 +0200
Thread-Topic: [rtcweb] Codec control and SDP offer/answer frequency
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Codec control and SDP offer/answer frequency
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Hi,

>>> So, if I understand you correctly: you suggest that the codec control
>>information is transported using SDP/a=imageattr "internally" (between app
>>and browser), but then people can send it over the wire however they want?
>>
>>Yes. I believe that's the model we have agreed on.
>>
>
> I think that is fully in line with how SDP is treated in RTCWeb in general (at least so far), so there does not seem to be anything special about this case.

Fair enough.

But, that means that IF we use SDP offer/answer on the wire, and that offer/answer is not appropriate for codec control, we need to define another mechanism.

(By "we" I don't necessarily mean the rtcweb wg, but the community in general)

Regards,

Christer

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