[Bug 21727] Use cases and requirements for the EME

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21727

Mark Watson <watsonm@netflix.com> changed:

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                 CC|                            |watsonm@netflix.com

--- Comment #2 from Mark Watson <watsonm@netflix.com> ---
(In reply to comment #0)
> Please add the following use case requirement for the EME specification: the
> EME API needs to be compatible with the historical operation of the open web
> and as a requirement must require the CDM to return the decoded and
> decrypted streams to the user agent.

As Glenn says, this is not a use-case. It is a proposal for new requirements.

Your proposal can be split into three parts:
(i) that the interface between CDM and UA should be defined, or at least
constrained, within the EME specification
(ii) that this interface must support returning of decrypted and decoded media
to the user agent
(iii) (maybe - I am not sure if you are proposing this) that all CDMs MUST
return decrypted and decoded media to the user agent 

> 
> I would note that W3C has ruled that the EME is in scope and that work on
> the EME can proceed.  The W3C has not ruled on what the use cases and
> requirements are and the EME specification currently does not defined them
> in an object technical manner.  This bug adds use cases and requirements.

Yep. Your proposal (whichever it is) is in scope and should be considered by
the WG.

> 
> Note that the W3C has also ruled that meta level discussion regarding the
> use cases and requirements is not within the scope of the working group and
> that such discussed should occur in the Restricted Media Community Group
> which is not charted to influence the technical process.  If there are any
> objections to meeting these uses case then please take it up in the
> Restricted Media Community Group.

In the WG, we have touched on all three of the above before and there has not
been support for any of them. I doubt there will be support now, but let's let
the bug run for a while and see.

In the event there is no support for these requirements, I believe you are
claiming that this makes EME 'incompatible with the historical operation of the
open web'. Debating that claim would clearly be a topic for the Restricted
Media Community Group. Should that group conclude that the claim is indeed true
there is then a question for the community of whether indeed we wish to break
with that historical operation. I have comments on both of those topics, but I
will leave those for discussion in the WG if indeed you wish to raise these
things there.

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Received on Wednesday, 17 April 2013 16:02:36 UTC