- From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
- Date: Tue, 10 Jan 2006 19:57:18 +0100
- To: public-wcag-teama@w3.org
At 18:18 9/01/2006, Ben Caldwell wrote: <blockquote> (...) 1.2.3: I've added the SMIL techniques for 1.2.1 to 1.2.3 in the wiki per Gregg's request. However, I'm not sure that the techniques would be the same for static vs. real-time captions in SMIL? Any SMIL experts on Team A that can help? (...) </blockquote> In the absence of SMIL experts, I consulted "SMIL: Adding Multimedia to the Web" by Tim Kennedy and Mary Slowinski (SAMS, 2002; see also http://www.smilbook.com/). For a prerecorded video, you do "pseudostreaming" or "progressive download" over HTTP and TCP, while live video requires true streaming with a streaming server and a streaming protocol over UDP (instead of TCP). The book has nothing to say about how you work with resources from a streaming server. However, there is a SMIL example at http://open4all.info/ossa/_SMIL. In the SMIL file, you need a correct link to the stream on the server, which, in this example, talks RTSP. There's also some information at http://service.real.com/help/library/guides/production8/htmfiles/live.htm. As far as I can tell, the real challenge is creating those streams and getting the captions synchronized. Regards, Christophe -- Christophe Strobbe K.U.Leuven - Departement of Electrical Engineering - Research Group on Document Architectures Kasteelpark Arenberg 10 - 3001 Leuven-Heverlee - BELGIUM tel: +32 16 32 85 51 http://www.docarch.be/ Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
Received on Tuesday, 10 January 2006 18:59:00 UTC