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Re: [whatwg] TextTrack and addCue

From: Cyril Concolato <cyril.concolato@telecom-paristech.fr>
Date: Thu, 27 Sep 2012 10:35:26 +0200
Message-ID: <50640FCE.8060101@telecom-paristech.fr>
To: whatwg@lists.whatwg.org
Hi Philip,

Le 9/27/2012 10:30 AM, Philip Jägenstedt a écrit :
> On Wed, 26 Sep 2012 21:41:34 +0200, Cyril Concolato 
> <cyril.concolato@telecom-paristech.fr> wrote:
>> Hi all,
>> Has it been considered adding another method to add cues to a track? 
>> Something like addCues(DOMString text) where the text is not only one 
>> cue (like in the TextTrackCue ctor) but where the text would be 
>> multiple cues as written in a WebVTT file? My use case is that I'm 
>> getting WebVTT content from a server using XHR and I'd like to add 
>> that easily to the track, without having to parse them myself. 
>> Ideally, I would like to push the WebVTT content to the track a bit 
>> like the Media Source Extension API. Another option (less ideal) 
>> would be to have a WebVTTParser object with a parseFromString method 
>> returning a TextTrackList (a bit like the DOMParser object). Each cue 
>> could be added one by one.
>> Comments?
>> Cyril
> You can parse WebVTT using a dummy video+track element and then move 
> the cues to the actual track, why is this less than ideal?
I did not think about that option. It could do the trick. Thank you. By 
less than ideal, I meant that if I can push content to a buffer and let 
the browser parse the text and add the cues to the track, it seems 
easier/more elegant than having either to parse in JS or to create dummy 
elements and move cues around.


Cyril Concolato
Maître de Conférences/Associate Professor
Groupe Multimedia/Multimedia Group
Telecom ParisTech
46 rue Barrault
75 013 Paris, France
Received on Thursday, 27 September 2012 08:35:52 UTC

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