- From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- Date: Mon, 16 Sep 2013 21:29:45 +1000
- To: Simon Pieters <simonp@opera.com>
- Cc: Glenn Adams <glenn@skynav.com>, Brendan Long <self@brendanlong.com>, "HTML WG (public-html@w3.org)" <public-html@w3.org>, Eric Carlson <eric.carlson@apple.com>, Philip Jägenstedt <philipj@opera.com>
On Mon, Sep 16, 2013 at 9:01 PM, Simon Pieters <simonp@opera.com> wrote: > On Mon, 16 Sep 2013 04:57:35 +0200, Silvia Pfeiffer > <silviapfeiffer1@gmail.com> wrote: > >> OK, we've come all the way round back to what I proposed in >> http://lists.w3.org/Archives/Public/public-html/2013Aug/0152.html , >> but with s/GenericCue/UnparsedCue/ and VTTCue not inheriting from >> UnparsedCue. >> >> It seems that we now have agreement on this from several people >> including voices from Opera, Mozilla, and Chrome, but with concerns >> raised from Apple and Microsoft. >> >> >> Here are some remaining open issues from the discussion: >> >> * what is the browser supposed to do for a UnparsedCue on a track with >> @kind="captions" ? > > > Just expose it to scripts? That means changing the semantics of what these kinds mean. http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#attr-track-kind says captions & subtitles are overlaid on the video, descriptions are synthesized as audio, and chapters are displayed as lists, none of which would apply to UnparsedCue. Also, as currently specified, if a UnparsedCue was of @kind=captions and had a @default attribute, it could override an actual TextTrack that had renderable cues. I think the implications of UnparsedCue for @kind != metadata are too far-reaching. I suggest we make it an error to create UnparsedCue for anything but a @kind=metadata TextTrack. >> * could / should we enforce that UnparsedCue is always the >> TextTrackCue interface for @kind="metadata" ? > > > I don't think we should. For WebVTT, one might want a metadata track to > download but not render, and still want to use the WebVTT-specific stuff > (e.g. the cue settings). Hmm... Are you aware of a use case for WebVTT metadata cues where the cue settings would be useful? Silvia.
Received on Monday, 16 September 2013 11:30:32 UTC