- From: Leonard Rosenthol <lrosenth@adobe.com>
- Date: Sat, 8 May 2010 11:01:29 -0700
- To: Jonas Sicking <jonas@sicking.cc>, Sean Hayes <Sean.Hayes@microsoft.com>
- CC: Philip Jägenstedt <philipj@opera.com>, "public-html@w3.org" <public-html@w3.org>
Since you chose to bring PDF into the discussion, I feel the need to "uncloak" and correct your quite incorrect information, as well as provide some additional information in this area. >Personally I'm not sure what TTML brings that we want. As far as I can >see it's about as accessible as a PDF is. Instead of marking up the >semantic meaning of its contents it basically just says that text >should be displayed with various layout properties at various times. >There is no way to for example find every instance when a specific >person says "hello", or to style all narrator text in italics and >surrounded by '[' ']'. > PDF (ISO 32000-1 [1]) FULLY supports the "marking up the semantic meaning of its content" and has for almost a decade now since "Tagged PDF" was added to the PDF 1.4 specification (May 2001 [2]). I will also add that the forthcoming PDF/UA (PDF for Universal Accessibility - [3]) standard from the ISO also includes some references to video capturing for the purposes of accessibility, though it does not impose a specific implementation for that format. Leonard Rosenthol PDF Standards Architect Adobe Systems [1] http://www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf [2] http://www.amazon.com/PDF-Reference-Version-1-4-3rd/dp/0201758393 [3] http://en.wikipedia.org/wiki/PDF/UA
Received on Saturday, 8 May 2010 18:02:16 UTC