- From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- Date: Thu, 26 May 2011 09:43:12 +1000
- To: HTML Accessibility Task Force <public-html-a11y@w3.org>
Hi all, Please find the minutes of today's media subgroup meeting at http://www.w3.org/2011/05/25-html-a11y-minutes.html and paste below. Note that the agenda control didn't seem to go through to the minutes... you can find them in the irc log at http://www.w3.org/2011/05/25-html-a11y-irc . I've made headings in the below copy. Cheers, Silvia. - DRAFT - HTML Accessibility Task Force Teleconference 25 May 2011 Attendees Present Janina, Sean, silvia, Judy, Eric, Plh Regrets John_Foliot, Marc_Watson Chair Janina_Sajka Scribe silvia Contents agenda+ Identify Scribe agenda+ Clean Audio: What shall WE call it? agenda+ Paused Media: Continuing Discussion agenda+ Actions Review http://www.w3.org/WAI/PF/HTML/track/actions/open agenda+ Other Business? agenda+ be done 1. Indentify Scribe scribe: silvia 2. Clean Audio: What shall WE call it? discussion about what the tracks are one type is a multi-channel mix in one track, where one channel has speech-only such a track is an alternative to main audio another type is an additional track that contains only speech and can be increased in volume over other tracks proposal is that we may need both however there is not enough real-world use case knowledge in the group to validate the use case we will seek further input from experts before making a decision 3. Paused Media: Continuing Discussion janina: last week we seemed to have a solution for how to appropriately mark up alternative text, both short and long for video including poster both for graphical and non-graphical browsers I took it to PF today for example to find out if we retain language markup and the answer is: yes - the markup is retained for elements, but not for attributes however, if you go into a non-graphical browsing mode, I'm not sure we are safe eric: a non-graphical browser would not support the video element and thus should take the fallback inside it silvia: a lynx developer seemed to indicate that once a non-graphical browser supports html5, it would not display the content inside the video element instead it would compose such text from the video element's attributes I am not even sure we should be discussing this here in the a11y TF, but it's an issue for the larger group eric: it would then also have to support the aria attributes so it should have enough information from aria-describedby as we have suggested it janina: what are the next steps? need to discuss in the wider community? I wanted to introduce it into WAI today sean, eric: seems a fine solution silvia: the issue that John indicated was that when aria-describedby points to structured markup, screenreaders currently just read it out as text when it should in fact be read out as structured markup, e.g. including URLs Janina: yes, PF also agrees with this and screenreaders need to start interpreting such text correctly next step should be to get this information out more widely so we get good information on that janina: should this go into the HTML5 spec and / or into the HTML a11y User Agent implementation guide silvia: there is no spec change necessary for HTML5, but it might be good to add an example into it to get the approach in front of more eyes eric: what we need to explain to people is how aria-describeby works <janina> http://www.w3.org/TR/html-alt-techniques/ it should probably go into the HTML alt techniques document janina: we also want it in the user agent guide, too in particular that that level of markup should be supported e.g. that uris need to be interpreted eric, silvia: sounds fine by me janina: will forward it in both cases silvia: the only thing that we may need a change proposal for, if we still want it, is the @transcript attribute it could be replaced by a @longdesc attribute as a means to link to a full transcript sean: I think they are semantically different silvia: instead we can just have it inside the aria-describedby markup just like we have it for the poster long description <video src="file.mp4" poster="poster.png" aria-describedby="posteralt videosummary" aria-label="MyPlayer video player"> <p id="videosummary">A Clockwork Orange Trailer (<a href="transcript.html">Transcript</a>)</p> <p id="posteralt">Poster frame is a clockwork orange movie poster (<a href="posterlongdesc.html">long description</a>)</p> <p> <a href="file.mp4">Download the video file</a></p> </video> there is a lot of indirection now sean: is the fallback content even in the dom? eric, silvia: yes it is sean: with this markup, there is no semantic markup that a machine can rely on to interprete as the transcript the user has no way to get at that content silvia: yes, an attribute @transcript would allow creating a context menu item for users so do we want to start a discussion in the larger HTML5 group about introducing such an attribute? I can start such an email discussion on public-html janina: yes … general agreement <scribe> ACTION: janina to work with authors of HTML alt techniques document and HTML a11y user agent implementation guide to add the aria-describedby video example there [recorded in http://www.w3.org/2011/05/25-html-a11y-minutes.html#action01] <trackbot> Created ACTION-127 - Work with authors of HTML alt techniques document and HTML a11y user agent implementation guide to add the aria-describedby video example there [on Janina Sajka - due 2011-06-01]. <scribe> ACTION: silvia to follow-up on @transcript attribute [recorded in http://www.w3.org/2011/05/25-html-a11y-minutes.html#action02] <trackbot> Created ACTION-128 - Follow-up on @transcript attribute [on Silvia Pfeiffer - due 2011-06-01]. 4. Actions Review http://www.w3.org/WAI/PF/HTML/track/actions/open Judy will follow up on a reply to the ISO/MPEG group re kind attribute values other actions are still open and continue there is also a bug on providing track usage examples - silvia will follow up 5. Other Business? note that Google proposed a WebVTT WG charter to W3C janina: we still have to take up the topic of navigation silvia: had a brief discussion with Ian about this and we may be able to satisfy it with existing techniques - have to look at it in more depth - there's a bug in the HTML bug tracker janina: keen to look at the Web Audio API there is an ETSI standard on this for broadcasting Summary of Action Items [NEW] ACTION: janina to work with authors of HTML alt techniques document and HTML a11y user agent implementation guide to add the aria-describedby video example there [recorded in http://www.w3.org/2011/05/25-html-a11y-minutes.html#action01] [NEW] ACTION: silvia to follow-up on @transcript attribute [recorded in http://www.w3.org/2011/05/25-html-a11y-minutes.html#action02] [End of minutes]
Received on Wednesday, 25 May 2011 23:44:00 UTC