W3C home > Mailing lists > Public > public-html@w3.org > June 2009

RE: Firing media events early for throttled downloads

From: David Singer <singer@apple.com>
Date: Fri, 5 Jun 2009 16:14:33 -0700
Message-Id: <p06240810c64f56dce907@[]>
To: John Foliot <jfoliot@stanford.edu>, 'Ian Hickson' <ian@hixie.ch>, 'Robert O'Callahan' <robert@ocallahan.org>
Cc: 'public-html' <public-html@w3.org>
I believe that the spec. says that auto-play is (a) advisory and (b) 
the user should be in control of whether and when and how the advice 
is taken.

If it doesn't say that, it should.  The UA could be put, for example, 
in a mode such that media that is ready to auto-play does not do so, 
but instead starts flashing alternating pink smileys and the words 
"play me! play me!".  Or something more suitable...

At 16:08  -0700 5/06/09, John Foliot wrote:
>Ian Hickson wrote:
>>  we have an explicit "autoplay" attribute which we should
>>  be encouraging authors to use instead.
>Whilst this may be a better programmatic way of firing a media stream, I
>would suggest that "autoplay" be specifically *discouraged* in all
>documentation, as it conflicts with AT that requires audio output (screen
>readers).  The launch of linked or embedded multi-media content should be
>a user-choice decision, and not an author-choice one: User-agents (who
>seem to be driving this whole thing) should also have specific over-ride
>controls built into their system, so that end-users can 'refuse' author
>directives to auto-start, in keeping with the axiom 'author proposes, user
>"I believe that if we ensure that we have good tutorials for this
><del>API</del><ins>feature</ins>, we can sidestep this
>Examples in the wild:
>BAD - Using your favorite screen reader, visit:
>GOOD - http://w20.wvfm.fm/movies/ (the "celebration cinema" ad)
>...Note that this example also involves/involved author awareness (as the
>audio off setting is set by the developer), but this is the type of
>functionality that we need to give to the end user - so that by default,
>if they *need* to not have audio auto-fire (and it could also be argued
>motion as well, although likely less severe), they could set that as a
>global setting for their user-agent.
>(As an observation - if you have ever worked in a cube farm, you might
>also appreciate not having audio auto-fire from your cube while you are
>hard at work doing 'research'<wink> on the web...)

David Singer
Multimedia Standards, Apple Inc.
Received on Friday, 5 June 2009 23:16:53 UTC

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