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Re: Systematic access to media/plugin metadata

From: Danny Ayers <danny.ayers@gmail.com>
Date: Wed, 13 Apr 2011 00:36:14 +0200
Message-ID: <BANLkTi=xOkmNBhySthO8OZx__miobAvS1g@mail.gmail.com>
To: Eric Carlson <eric.carlson@apple.com>
Cc: "public-html@w3.org (public-html@w3.org)" <public-html@w3.org>
On 12 April 2011 22:46, Eric Carlson <eric.carlson@apple.com> wrote:

>  My point was that as far as I know, no media file format has a standard way to mark a text track as a "transcript". Therefore the media format specific metadata has to be defined, eg. what 'udta' or 'meta' value signals a transcript in a QuickTime/MPEG-4 file, before the HTML WG can define a mapping to it.

But the HTML WG doesn't need to define mappings of specific fields to
specific formats, just the *interface* to use should the field be
available. Right now we have [1]:

   A label
   This is a human-readable string intended to identify the track for the user.

We could have:

   A transcript
   This is a text representation of the spoken word in the media.

- what either of those is mapped to in the media format-specific
metadata is up to 3rd party decoder developers, not the HTML WG.

Having said that, I don't personally believe it's desirable to specify
and/or restrict the naming of the potential name-value fields, better
to provide a general-purpose slot and "let the market decide".


[1] http://dev.w3.org/html5/spec/Overview.html#text-track-label

Received on Tuesday, 12 April 2011 22:43:17 UTC

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