[Bug 17465] <track> text tracks need to allow a @default attribute per group of @kind tracks

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17465

--- Comment #2 from Silvia Pfeiffer <silviapfeiffer1@gmail.com> 2012-06-12 12:30:18 UTC ---
(In reply to comment #1)
> Does it really make sense to enable both a subtitle track and a captions track
> by default? More sense then enabling two caption tracks?

We've made them two separate kinds, so: yes. A caption track would be in the
native language (e.g. in English) and an additional subtitle track would be in
a different language (e.g. in Swedish), which would be great for deaf people
that are trying to learn a foreign language.


> I'm not opposed to allowing more than one default track, but how should the
> automatic track selection be influenced by that?

I am only asking for a default PER KIND. So, a default caption, a default
subtitle, a default description, and a default metadata track make complete
sense to me, in particular since the descriptions are rendered through audio
and the metadata through script.


> With only a single track
> enabled, it's easy to tell that there's another track in a language that the
> user knows better, but how can one tell which combination of tracks is better
> than multiple default tracks?

I don't understand this question. There won't be more than on caption track
active. In a menu there would be a list of all the available caption tracks, so
you choose a different one which deactivates the previous one. Same for all the
other tracks.

For example, I would author to set (out of a list of tracks of different kinds
and languages) a default caption track in English and a default descriptions
track in English. As a browser, I could be even more clever to choose the
default based on the language settings of the browser - and that default would
be per kind.

> The simplest thing to do would probably to simply enable all tracks with a
> default attribute (ignoring their types) and to to disable automatic track
> selection if there are more than one default tracks.

How would you do automatic track selection with a single default attribute
across all track kinds? I think that's actually not do-able/sensible. A default
per track kind, in contrast, makes sense.

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Received on Tuesday, 12 June 2012 12:30:25 UTC