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Re: Encrypted Media proposal (was RE: ISSUE-179: av_param - Chairs Solicit Alternate Proposals or Counter-Proposals)

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Fri, 2 Mar 2012 10:19:08 -0800
Message-ID: <CAAWBYDAR8GHrBSQYH58dCQihtL4XOQs9ce_MON+wPVEt+3RhFw@mail.gmail.com>
To: Glenn Adams <glenn@skynav.com>
Cc: Silvia Pfeiffer <silviapfeiffer1@gmail.com>, Henri Sivonen <hsivonen@iki.fi>, Mark Watson <watsonm@netflix.com>, "<public-html@w3.org>" <public-html@w3.org>
On Fri, Mar 2, 2012 at 10:14 AM, Glenn Adams <glenn@skynav.com> wrote:
> On Fri, Mar 2, 2012 at 4:07 AM, Silvia Pfeiffer <silviapfeiffer1@gmail.com>
> wrote:
>> On Fri, Mar 2, 2012 at 8:41 PM, Henri Sivonen <hsivonen@iki.fi> wrote:
>> > On Thu, Mar 1, 2012 at 11:57 PM, Mark Watson <watsonm@netflix.com>
>> > wrote:
>> >> The underlying content protection systems are things like PlayReady
>> >> (from
>> >> Microsoft), Widevine (from Google) and Marlin. Adobe have something,
>> >> but I
>> >> don't know what they call it.
>> >
>> > As a co-proposer, does Microsoft plan to integrate PlayReady into IE?
>> > As a co-proposer, does Google plan to integrate Widevine into Chrome?
>> > Do the co-proposers plan to make their CDMs available to other
>> > browsers? Do the co-proposers plan to provide APIs that'd allow adding
>> > other CDMs to their browsers?
>> I'm confused. I thought the whole idea of the proposal was to just
>> provide an API for adding CDMs into browsers such that when you have
>> the library installed on your computer, any browser is able to make
>> use of it, no matter if it's Google's Widevine library or Microsoft's
>> PlayReady - e.g. Firefox would be able to make use of these and any
>> other CDM library. There would be no need to implement something
>> additional into browsers. If this is false, somebody better clarify
>> how else it is supposed to work.
> Yes, that is indeed the idea. But Henri keeps wanting to drill down into the
> CDMs themselves, which is really out of scope for the proposal.

Given that the CDM is a necessary component of the mechanisms
described in the spec, the details of the CDM are extremely relevant.
There's no way to implement the spec without involving a CDM.

Received on Friday, 2 March 2012 18:19:58 UTC

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