- From: <bugzilla@jessica.w3.org>
- Date: Fri, 13 May 2011 01:15:15 +0000
- To: public-html-a11y@w3.org
http://www.w3.org/Bugs/Public/show_bug.cgi?id=12544 Mark Watson <watsonm@netflix.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|FIXED | --- Comment #7 from Mark Watson <watsonm@netflix.com> 2011-05-13 01:15:07 UTC --- Three additional track kinds are required for accessibility purposes as follows: captions - video with open ("burned in") captions subtitles - video with open ("burned in") subtitles clearaudio - an alternative audio track in which sounds which are not dialog or other important non-speech information are attenuated Video with open captions/subtitles is still in practical use when closed captions/subtitles in separate files are not available. This is often the case with old content. Clear audio streams are intended to make dialog easier to understand for those with poor hearing. They are available for some content and specifically are available in the UK from the BBC. There is work happening at MPEG and 3GPP to expose track kinds in their adaptive streaming standards. MPEG and 3GPP would like to utilise the same terms and meaning as we are using here to make the mapping of track types in their adaptive streaming formats to our API obvious. -- Configure bugmail: http://www.w3.org/Bugs/Public/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
Received on Friday, 13 May 2011 01:15:17 UTC