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Re: [rtcweb] Some videos to download for today presentation

Adam Roach <adam@nostrum.com> Thu, 14 March 2013 14:17 UTC

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Date: Thu, 14 Mar 2013 10:16:35 -0400
From: Adam Roach <adam@nostrum.com>
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To: John Koleszar <jkoleszar@google.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Some videos to download for today presentation
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On 3/14/13 10:12, John Koleszar wrote:
> The artifacts in video A are primarily caused by scaling, they're not 
> artifacts of VP8. Swapping in h264 and keeping all the other pieces 
> the same would look similar. This is going to affect everything from 
> perceived quality to achieved bitrate. I'm not sure you can draw any 
> conclusion from this test, and I don't think it lives up to its goal 
> of "showing good VP8 implementation in best of conditions."

Right. If we attempt to draw conclusions from these videos, they would 
include wild fallacies such as "VP8 cannot encode video with a correct 
aspect ratio."

/a

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