Re: Meetecho session recording for IETF-84 Telepresence (CLUE) Tutorial

Carsten Bormann <cabo@tzi.org> Wed, 08 August 2012 23:07 UTC

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Subject: Re: Meetecho session recording for IETF-84 Telepresence (CLUE) Tutorial
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From: Carsten Bormann <cabo@tzi.org>
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Date: Thu, 09 Aug 2012 01:07:12 +0200
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To: Mary Barnes <mary.ietf.barnes@gmail.com>
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On Aug 9, 2012, at 00:37, Mary Barnes <mary.ietf.barnes@gmail.com> wrote:

> It's surely not perfect, but given the technology being used, it's certainly good enough

I'm sorry, I'm not a native English speaker, and the audio simply needs to be better to be legible for my ears.
With Audio Hijack and a couple of appropriately tuned AudioUnits, this recording indeed becomes barely understandable.
But what's lost is gone, and I'd rather focus on the content instead of on making out the words.
Actually, I'd rather listen to VHF AM 8.3 kHz cockpit communications than this...

> and I find having the video and presentations synched is far superior to just listening to the regular audio stream.  

That is certainly a great feature.  But the regular audio stream mostly is legible, and the meetecho one apparently isn't.

> You can turn off audio on Meetecho and use the regular audio stream, but the audio will be delayed. 
> 
> As a chair, I find it very useful to use the recorded session to double check my notes or sometimes clarify notes by the notetakers. 

Certainly.  And many kudos to Joel and friends.

> It's also extremely important to consider that these guys are providing the service at no cost to IETF.  I can't fathom what the cost would be if IETF were paying for something that might meet your quality standards.

Recording at a sampling rate of 8 kHz in 2012?  That's incomprehensible (in both senses).  And then applying some inferior compression scheme that inserts heavy artifacts.  They can do better.  Much better.  For exactly the same cost.

If the meetecho guys use the IETF as a pilot customer, they need honest feedback.  Honest and candid.  Like the one I'm providing here.  They don't want to be remembered by 1000 people as the guys who can't get audio right.

The fact that the tutorial is about telepresence adds a measure of irony...
(Which gets to the point of hilarious when the SDP example actually uses PCMU/8000 :-)

Grüße, Carsten