- From: Dave Singer <singer@apple.com>
- Date: Wed, 4 Jul 2007 17:12:37 +0200
- To: aurelien levy <aurelien.levy@free.fr>, public-html@w3.org
At 15:33 +0200 4/07/07, aurelien levy wrote: >I don't say that this working group must support one format more >than another. I just sat that open captionning is better for web >accessibility (technically easier to parse for AT than burned in >captions even if actually there is any AT that can access to it, and >easier for user to manipulate). I think that the more simple is the >way to provide caption, the more content creator will add it. > >SMIL is very good but it's a pain to use. >For example, to use it with a real media player in a web page i add >to integrate it with an object element. >This object must have a .ram file src, this .ram file must containt >a link to the .smil and then the .smil must link to the .rt for the >caption and the .rm for the video. > >At least i think the video element must support adding of the >current w3c timed text format DFXP : >http://www.w3.org/TR/2006/CR-ttaf1-dfxp-20061116/ >(candidate recommandation) > >This way i can do : ><video src="xxx.rm"> ><caption src="thecaption.dfxp" /> ></video> > >or > ><video src="xxx.rm"> ><caption src="thecaption.rt" /> ></video> DFXP is an exchange format, not really designed for playback. I don't mind adding "annotative" elements to video and audio, but I think it a mistake to make them an implicit SMIL 'par'. >>>The model is that the content itself either has some kind of >>>accessibility "burned in" (e.g. burned-in captions), or can adapt >>>itself to an accessibility need. That's it. I think it would be >>>a mistake for HTML to try to get into the realm of media layup >>>languages, file formats, synchronization requirements, and so on. >>>These are properly the domain of SMIL and media systems. >>> >>>So yes, the media source is supposed to take care of this. One >>>could reasonably embed a SMIL file as the target of a video >>>element, for example. >>> >>>Makes sense? -- David Singer Apple/QuickTime
Received on Wednesday, 4 July 2007 15:13:09 UTC