[Bug 11842] <video> Default track enabling for video elements seems to miss a qualifier

http://www.w3.org/Bugs/Public/show_bug.cgi?id=11842

--- Comment #4 from Silvia Pfeiffer <silviapfeiffer1@gmail.com> 2011-06-03 00:37:10 UTC ---
(In reply to comment #3)
> One of each kind would allow one "subtitle" track and one "caption" track,
> which is what I meant in comment 1.

So the "default" attribute is really only to decide which of the visible tracks
will be active during playback. OK.


> For "chapters", one chapter track is always enabled regardless of the "default"
> attribute, so adding this doesn't seem useful.

If there are several chapter tracks, which of them is the one that is enabled?

Also, I don't think it's clearly stated that a chapter track is always enabled
- at least I wasn't aware of this. Can we make this more explicit?


> For "descriptions", having an audio description track and a subtitle track
> enabled at the same time seems highly unlikely to be a common use case, since
> they are targetting basically mutually exclusive groups of people.

Could be for useful deaf-blind users, but I guess you are right and the Web
page publisher has to decide whether they prefer to target deaf or blind people
preferentially with their markup. OK.



> For "metadata", the only use case requires script, so you can just enable it
> from script.

OK.

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Received on Friday, 3 June 2011 00:37:12 UTC