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[whatwg] Captions, Subtitles and the Video Element

From: Eric Carlson <eric.carlson@apple.com>
Date: Thu, 19 Feb 2009 16:22:35 -0800
Message-ID: <2899D817-B95C-4C18-8B10-B63F260EB7D2@apple.com>
Greg -

   Interesting ideas!  A few questions that occur to me on first read:

On Feb 19, 2009, at 2:37 PM, Greg Millam wrote:

> HTML5 / Page Author:
>  * Each video will have a list of zero or more Timed Text tracks.
>  * A track has three variables for selection: Type, Language, Name.
> These can be null, except for name.

>

   I am confused by your terminology. Does "Timed Text track" refer to  
the caption elements, or the caption tracks in the media file, or  
both? The term "Time Text track" has a very specific meaning in a  
media file, so unless that is what you mean I think another term would  
be preferable.

>  * All timed text tracks encoded in the video file are added to the
> list, as an implicit caption element.
>

   When should the UA create the implicit caption element(s) from the  
tracks in the media file? What should it do about caption samples that  
are spread throughout the media file?

>  * Caption tags, when displayed, count as <span
> class="caption">...</span> unless they have style associated with them
> (uncommon). So they can be tweaked via CSS. Whether by the author or
> overridden by useragent.
>
   So by default, all of the captions (along with number and time  
stamps) for the entire file are displayed at the same time?

eric
Received on Thursday, 19 February 2009 16:22:35 UTC

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