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Re: Mapping Ogg role to HTML5 TextTrack.kind

From: Brendan Long <self@brendanlong.com>
Date: Mon, 17 Mar 2014 15:24:41 -0500
Message-ID: <53275A09.2020007@brendanlong.com>
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
CC: public-html <public-html@w3.org>
The audio and video ones look good. I can't find a table for TextTracks, 
besides the in-band tracks wiki though. Is there one, or are we just 
using the wiki table for now?

On 03/17/2014 07:18 AM, Silvia Pfeiffer wrote:
> On Wed, Feb 19, 2014 at 7:17 AM, Brendan Long <self@brendanlong.com> wrote:
>> I'm trying to implement the TextTrack.kind in GStreamer for Ogg files.
>> According to the spec:
>> For Ogg files, the Role header field of the track gives the relevant
>> metadata.
>> For the most part, the mapping is obvious ("text/caption" -> "captions",
>> "video/sign" -> "sign", etc.), but there are a couple which I think we
>> should be more specific about:
>> What is the kind for "text/tickertext", "text/karaoke", "text/linguistic",
>> and "text/lyrics"? I'm thinking "subtitles", since we want them to be
>> renderable.
> "text/karaoke" is "subtitles".
> The rest is "metadata", since their default rendering doesn't follow
> the default rendering of subtitles.
> I've actually made some changes as part of
> https://www.w3.org/Bugs/Public/show_bug.cgi?id=24997.
> Do have a read and see what you think.
>> What should we do for "text/*" not in the official Role header list? I'd say
>> "metadata".
> Yes.
>> What about "audio/music", "audio/speech", "audio/ssfx", and "audio/*" and
>> "video/*" not in the list? Probably empty string?
> Right. Does that need extra specification? It already says in
> http://www.w3.org/html/wg/drafts/html/master/single-page.html#dom-TrackList-getKind-categories
> to use the empty string for anything else.
>> We may also want to specifically say that "audio/dub" -> "translation",
>> "text/textaudiodesc" -> "descriptions", and "audio/audioesc" ->
>> "descriptions", since they map nicely, but aren't exactly the same like all
>> of the others.
> It's either at http://www.w3.org/html/wg/drafts/html/master/single-page.html#dom-TrackList-getKind-categories
> or in the bug mentioned above. I think we're not missing anything any
> more.
> Cheers,
> Silvia.
Received on Monday, 17 March 2014 20:25:17 UTC

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