Re: TextTrackCue "until the next cue" endTime

Hi Brendan,

First things first:

Why are you writing another spec to translate
CEA-708 to WebVTT when the TextTrack CG already has this document:
https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html
?

Also, the link that you provided links to a document to translate
in-band MPEG-2 text tracks to HTML5 text tracks and thus has nothing
to do with WebVTT - I am very confused.

Now for some inline comments.


On Thu, Jan 9, 2014 at 3:50 AM, Brendan Long <self@brendanlong.com> wrote:
> My company is working on a spec to translate CEA-708 captions to WebVTT, and
> one issue we're running into is it's not always obvious how long a
> particular caption should be displayed. This blog post says that there has
> been discussion to add a "NEXT" end time for WebVTT, meaning "until the next
> cue", which would also be useful for us. I don't remember seeing this
> discussed on the mailing list though, so I'm wondering if you're still
> planning to add this.

Yes, it's still an option and there is a bug in the bug tracker for it
and it needs more discussion. This discussion needs to be had also on
the TextTrack CG mailing list.


> If so, how will it be represented? TextTrackCue.endTime is currently a
> "double". One option would be making it nullable and making null mean "until
> the next cue". Making endTime a string would make the type more complicated,
> but would let us use "NEXT". We had also considered using infinity, but I
> suspect null or "NEXT" would be less confusing.

Interesting idea. That may indeed be a nicer possibility.

Feel free to get involved in any of the following bug discussions:
https://www.w3.org/Bugs/Public/show_bug.cgi?id=23414
https://www.w3.org/Bugs/Public/show_bug.cgi?id=18029 /
https://www.w3.org/Bugs/Public/show_bug.cgi?id=14104

Cheers,
Silvia.

Received on Thursday, 9 January 2014 01:36:55 UTC