Hi Brian,
Thanks for pointing out Silvia's blog post. Not to muddy the waters any, but folks should note that currently Google is pushing hard on WebVTT as a time-stamp format, but to date it is nothing more than a WHAT WG Spec, although there is work to bring it into the W3C and see it travel the Standards route. The current "competitor" to WebVTT is TTML (a current W3C spec) and a super-set of that called SMPTE-TT. Developed by the Society of Motion Picture and Television Engineers, it is the current format backed by "Hollywood" and other commercial content producers. The specification is available here: https://store.smpte.org/SearchResults.asp?Search=2052 What is most important to note at this time however is that neither format has 'native' support in any browser, and so to include captioning with a video using either time-stamp format requires additional java-script included in the content page. While Google's Chrome browser will likely be one of the early adopters of WebVTT, Microsoft (IE9) will likely support both, and with an emphasis on SMPTE-TT (from all appearances). Firefox, Safari and Opera remain quiet as to how they will go forward. FWIW JF ============================ John Foliot Program Manager Stanford Online Accessibility Program http://soap.stanford.edu <http://soap.stanford.edu/> Stanford University Tel: 650-468-5785 --- Co-chair - W3C HTML5 Accessibility Task Force (Media) http://www.w3.org/WAI/PF/HTML/wiki/Main_Page ============================ From: [email protected] [mailto:[email protected]] On Behalf Of Brian O'Hagan Sent: Tuesday, May 31, 2011 1:25 PM To: Opencast Community Subject: [Opencast] Accessibility & HTML5 video Folks who participated in last year's HTML5 working group may find the following to be of interest: A recap of the work of W3C and WHATWG in their development of standards for accessibility and HTML5 video: URL: http://blog.gingertech.net/2011/05/01/html5-multi-track-audio-or-video/ URL: http://msdn.microsoft.com/en-us/scriptjunkie/hh204741.aspx And, informative video on HTML5 video accessibility and the WebVTT file format, which is under consideration as a standard for timed text files. The talk reviews using WebVTT for captions, chapters, and metadata. The speaker, Dr. Sylvia Pfeiffer, gave a similar talk last October at the Open Video Conference. URL: http://youtu.be/gK72pcu3cpk --------------------------------- Brian O'Hagan Center for New Media Teaching and Learning Columbia University http://ccnmtl.columbia.edu (P) 212.854.4429
_______________________________________________ Community mailing list [email protected] http://lists.opencastproject.org/mailman/listinfo/community To unsubscribe please email [email protected] _______________________________________________
