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Re: [codec] Frames to Packets in draft-ietf-codec-opus-07?

"Kevin P. Fleming" <kpfleming@digium.com> Fri, 29 July 2011 13:57 UTC

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Date: Fri, 29 Jul 2011 09:57:08 -0400
From: "Kevin P. Fleming" <kpfleming@digium.com>
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Subject: Re: [codec] Frames to Packets in draft-ietf-codec-opus-07?
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On 07/28/2011 07:53 PM, Timothy B. Terriberry wrote:
>> Would it be possible to add an appendix or create an additional document
>> that describes how a middlebox could detect mode changes and avoid
>> concatenating in these cases?
>
> This is basically as simple as examining the first byte of the packet.
> But if you have some example text I'd be happy to make an appendix for
> it (and possibly other related issues).

If the PAYLOAD group ends up defining a multi-frame packetization 
mechanism for RTP encapsulation of Opus, then a middlebox could just use 
that mechanism and not have to care about whether the encoder changed 
modes between frames.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
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