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Re: Clarification on media capture split between WebRTC and DAP

From: Rob Manson <roBman@mob-labs.com>
Date: Tue, 16 Aug 2011 20:24:11 +1000
To: Rich Tibbett <richt@opera.com>, "public-webrtc@w3.org" <public-webrtc@w3.org>
Cc: Francois Daoust <fd@w3.org>, Stefan HÃ¥kansson LK <stefan.lk.hakansson@ericsson.com>, Alissa Cooper <acooper@cdt.org>
Message-ID: <1313490251.6734.9580.camel@robslapu>
On Mon, 2011-08-15 at 13:03 +0200, Rich Tibbett wrote:
> 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.

This might be ok for accessing a single image, but surely this
multi-step pipeline is really inefficient for repeated event loop style
processing.

It also makes it difficult, if not impossible to process the audio
associated with these images in a synchronised way.  Especially since
there is no equivalent (except perhaps the Mozilla Audio Data API).


roBman
Received on Tuesday, 16 August 2011 10:24:45 GMT

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