- From: Cyril Concolato <cyril.concolato@telecom-paristech.fr>
- Date: Tue, 24 Jul 2012 15:18:44 +0200
- To: whatwg@lists.whatwg.org
- Cc: "www-svg@w3.org" <www-svg@w3.org>
Dear WhatWG, During the ongoing SVG F2F meeting, the SVG WG discussed the use case of displaying SVG graphics on top of a video, in a synchronous manner. The SVG WG believes that for such use case, it is necessary to indicate to the browser that the SVG and video content should stay synchronized (no matter what happens to the video playback), and to let the browser handle the synchronization internally. The SVG WG resolved to include such indication as part of the Web Animation specification, for instance using the HTML mediagroup attribute or the MediaController API. However, the SVG WG thinks it would also be interesting to leverage the native UI controls of the video element to select (or deactivate) the display of the SVG content on top of the video, in a similar manner to a subtitle track. Obviously, the HTML 5 track element would be a suitable option for that. However, currently it only allows text tracks. So, the SVG WG would like HTML to allow the track element's URL to identify an SVG resource, and in that case the track kind would be 'graphics'. There would be a need to define how the graphics are displayed on top of the video, for instance reusing the viewport/viewbox negotiation phase. There would also be a need to make a more generic Track API or to replace the TextTrack API by the SVG API when the track is of kind 'graphics'. The SVG WG would like to have your feedback on this matter. Cyril Concolato, on behalf of the SVG WG (as part of SVG ACTION-3320) -- Cyril Concolato Maître de Conférences/Associate Professor Groupe Multimedia/Multimedia Group Telecom ParisTech 46 rue Barrault 75 013 Paris, France http://concolato.wp.mines-telecom.fr/
Received on Tuesday, 24 July 2012 13:18:50 UTC