RE: WebVTT bidi: should a cue be allowed to contain more than one paragraph?

" My preference is actually on the latter. If anyone wants more than one track *of the same kind*  to be "showing" at the same time, I recommend they use metadata kind tracks."
I agree. If your software project has some requirement on multiple tracks being visible/firing events at the same time, it seems most prudent to do it via metadata tracks & additional client-side cue event handling.

-----Original Message-----
From: Silvia Pfeiffer [mailto:silviapfeiffer1@gmail.com] 
Sent: Sunday, December 11, 2011 10:00 PM
To: Simon Pieters
Cc: public-texttracks@w3.org; Aharon (Vladimir) Lanin
Subject: Re: WebVTT bidi: should a cue be allowed to contain more than one paragraph?

On Thu, Dec 8, 2011 at 9:07 AM, Simon Pieters <simonp@opera.com> wrote:
> On Wed, 07 Dec 2011 22:18:22 +0100, Silvia Pfeiffer 
> <silviapfeiffer1@gmail.com> wrote:
>
>> From the point of view of authoring that information, two WebVTT 
>> files work. However, the HTML spec says that only one track of kind 
>> captions or subtitles can be showing at any point in time
>>
>> http://www.whatwg.org/specs/web-apps/current-work/multipage/video.htm
>> l#sourcing-out-of-band-text-tracks
>
>
> Where does the spec say this? As far as I can tell the spec allows 
> several tracks to be showing at the same time if the user so wishes. 
> However, there's no declarative way for the author to give two tracks 
> "showing by default", which is something we might want to change.

I suppose that the way in which the spec is currently written only requires during loading of the text tracks that only a single track is "showing". There is no statement about what happens when the user activates a different track of the same kind. In particular it doesn't say that when a track is newly "showing" that every other one that was previously "showing" should now be hidden. However, I am pretty sure that that was the intention.

It's definitely necessary that we resolve this inconsistency: either several tracks of the same kind should be able to be "showing by default" just as currently it's possible to have several tracks be "showing"... or we should state that as soon as a track is newly "showing", no other track of the same kind is allowed to be in the same state.

My preference is actually on the latter. If anyone wants more than one track *of the same kind*  to be "showing" at the same time, I recommend they use metadata kind tracks.

Cheers,
Silvia.

Received on Thursday, 15 December 2011 13:43:55 UTC