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Re: [rtcweb] resolutions in draft-cbran-rtcweb-codec-01

Aron Rosenberg <arosenberg@logitech.com> Fri, 18 November 2011 01:10 UTC

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From: Aron Rosenberg <arosenberg@logitech.com>
Date: Thu, 17 Nov 2011 17:10:28 -0800
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Subject: Re: [rtcweb] resolutions in draft-cbran-rtcweb-codec-01
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On Wed, Nov 16, 2011 at 7:19 PM, Roni Even <ron.even.tlv@gmail.com> wrote:

> Hi,****
>
> The text in the draft on video codec is****
>
> ** **
>
> o  MUST support a minimum resolution of 320X240****
>
> ** **
>
> o  SHOULD support resolutions of 1280x720, 720x480, 1024x768,****
>
>       800x600, 640x480, 640 x 360 , 320x240****
>
> ** **
>
>
> I would suggest dropping 720x480 as it is neither 16:9 or 4:3 ratio, but a
non-standard 3:2 ratio. From a camera perspective 1024x768 and 800x60 are
not well supported in video modes. Cameras, both integrated and external
generally support 640x480 and below with high quality, or support 1280x720
and below with high quality. I would also replace the intermediate 4:3
(1024x768 and 800x600) resolutions with 16:9 sizes such as 1024x576 and
864x480.

Aron Rosenberg
LifeSize, A Division of Logitech Inc.

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