- From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- Date: Thu, 22 Mar 2012 23:44:04 +1100
- To: John Foliot <john@foliot.ca>
- Cc: David Singer <singer@apple.com>, Sean Hayes <Sean.Hayes@microsoft.com>, janina@rednote.net, "'"'xn--mlform-iua@målform.no'"'" <xn--mlform-iua@xn--mlform-iua.no>, rubys@intertwingly.net, laura.lee.carlson@gmail.com, mjs@apple.com, Paul Cotton <Paul.Cotton@microsoft.com>, public-html-a11y@w3.org, public-html@w3.org
On Thu, Mar 22, 2012 at 6:05 PM, John Foliot <john@foliot.ca> wrote: > Silvia Pfeiffer wrote: >> >> <track> is a timed resource. Neither transcript, nor description, nor >> posterdescription are timed - they cannot be parsed into cues and >> displayed time-synchronously over the video. You cannot misuse the >> track element in this way. > > Hmmm... I don’t recall seeing anywhere where it states that @kind="metadata" > was required to be a timed resource - is that specifically stated somewhere? It's kinda hard to find, but it's there. For example, the definition of what a text track is in http://www.w3.org/TR/html5/the-iframe-element.html#text-track-model lists what a track consists of. One part of that is a list of cues: http://www.w3.org/TR/html5/the-iframe-element.html#text-track-list-of-cues i.e. each track consist of a list of cues. This is independent of what kind of text track we're dealing with. And a little further on the actual definition of a text track through its cues: "A text track cue is the unit of time-sensitive data in a text track, corresponding for instance for subtitles and captions to the text that appears at a particular time and disappears at another time." http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-list-of-cues The whole concept of text tracks is built around timed cues. > A quick check of the spec simply defines metadata as "Tracks intended for > use from script. Not displayed by the user agent." I do not see a definition > of "track" as used in this context. > > Just curious. Yeah, fair enough. Silvia.
Received on Thursday, 22 March 2012 12:45:00 UTC