- From: <lists@wiltgen.net>
- Date: Mon, 10 Feb 2003 21:28:01 -0800 (PST)
- To: <public-tt@w3.org>
Johnb@screen.subtitling.com wrote... > The point I am trying to make wrt to SMIL timing models is: How do you > synchronise the 'presentation' of the text with an external often > discontinuous timebase. It's pretty trivial. Let's say you want to show the word "foo" for 5 seconds, 10 seconds from the start of a commercial. Still assuming Proposal 0.0, it would look something like: <seq> <tt:p begin="10s" dur="5s">foo</tt:p> </seq> If the commercial is played at 01:03:28.720 (we don't need to know this time a priori), then the text appears at 01:03:38.720 and ends at 01:03:43.720. > SMIL has wallclock timebase - but that's no use. Time is the /only/ thing that's of use, believe me. You may believe that God's Atomic Unit of Time is 1/29.97th of a second, but George Lucas' is 1/24th of a second, and someone encoding PAL source for the web might consider it to be 1/12.5th of a second. > In subtitling - the ~timed text~ is kept separate from the media it > relates to. Right, and Proposal 0.0 does that to your satisfaction? -- Charles Wiltgen <http://playbacktime.com/>
Received on Tuesday, 11 February 2003 00:27:58 UTC