W3C home > Mailing lists > Public > public-webrtc@w3.org > August 2011

Re: Clarification on media capture split between WebRTC and DAP

From: Randell Jesup <randell-ietf@jesup.org>
Date: Mon, 15 Aug 2011 11:05:25 -0400
Message-ID: <4E4935B5.6060104@jesup.org>
To: public-webrtc@w3.org
On 8/15/2011 7:03 AM, Rich Tibbett wrote:

> Francois Daoust wrote:
>> Still images from a camera are not being handled by anyone, as far as I
>> can tell.
> AFAICS it will be possible to assign a Stream object to a<video>  and
> then copy content from that<video>  to a<canvas>  and then use
> getImageData against that<canvas>  to obtain a still image/snapshot from
> the original Stream object.
> So still image capture is handled implicitly in the web toolchain and
> does not need special consideration in either group (unless we end up
> not being able to use that toolchain for whatever reason in the final
> API..).

Umm... There's an inherent assumption there that <video> won't modify 
the data that
ends up in the <canvas> - change resolution, run through codecs, etc.  
Plus HW settings
for capturing video may be very different (lighting, flash, ISO, 
resolution, etc) than for
capturing still images, even from the same sensor.  So I'd be very leery 
of that as a
reasonable alternative.

Randell Jesup
Received on Monday, 15 August 2011 15:08:02 UTC

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