- From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- Date: Sat, 7 Sep 2013 15:24:05 +1000
- To: Glenn Adams <glenn@skynav.com>
- Cc: Cyril Concolato <cyril.concolato@telecom-paristech.fr>, public-html <public-html@w3.org>
On Fri, Sep 6, 2013 at 2:43 AM, Glenn Adams <glenn@skynav.com> wrote: > > > On Thu, Sep 5, 2013 at 8:19 AM, Silvia Pfeiffer <silviapfeiffer1@gmail.com> > wrote: >> >> > Could we compared example codes? >> >> I can give you an example: if you have TTML in-band in MP4, it's >> caption content, a browser has no parser and renderer for it, but can >> in theory extract the cues from the MP4 encapsulation - >> >> - the WHATWG spec would either not expose them to JS at all, or expect >> them to be exposed as VTTCue objects with @kind=metadata > > > This would not work, since VTTCue interprets cues of kind metadata as WebVTT > metadata text [1], which is most definitely incompatible with TTML that has > been serialized into intermediate synchronic document instances, each of > which is effectively an XML document. > > [1] > https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#extension-designations So this is what we have to resolve. Why do you think VTTCue of @kind=metadata can't contain TTML intermediate synchronic document instances (i.e. a XML document) ? Silvia.
Received on Saturday, 7 September 2013 05:24:52 UTC