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Re: EME: Rendering behavior undefined

From: Henri Sivonen <hsivonen@hsivonen.fi>
Date: Mon, 13 Jan 2014 16:51:07 +0200
Message-ID: <CANXqsRKBaUtSeqg384QWShr1nOnp-UuUt1JEufpnHvzxDJE=gQ@mail.gmail.com>
To: Philip J├Ągenstedt <philipj@opera.com>
Cc: Hans Schmucker <hansschmucker@gmail.com>, "public-html-media@w3.org" <public-html-media@w3.org>
On Mon, Jan 13, 2014 at 2:45 PM, Philip J├Ągenstedt <philipj@opera.com> wrote:
> On Mon, Jan 13, 2014 at 6:32 PM, Hans Schmucker <hansschmucker@gmail.com> wrote:
>> In summary, they should be removed and at best be replaced with a note
>> saying that usage of a CDM does not change the behavior of the video element
>> in any way. Correct?
> Probably not entirely correct, since a video element can normally have
> its pixels drawn to a canvas and its audio samples fed into the Web
> Audio API. I haven't checked, but I'd be surprised if either of these
> are possible using EME...

The current spec text on that topic was added in response to
https://www.w3.org/Bugs/Public/show_bug.cgi?id=21155 . It seems that
the position of the spec is that the interaction with canvas, the Web
Audio API and the like depends on the Robustness & Compliance
provisions each CDM is subject to instead of depending on EME itself.

Henri Sivonen
Received on Monday, 13 January 2014 14:51:34 UTC

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