- From: Philip Jägenstedt <philipj@opera.com>
- Date: Wed, 11 Jun 2008 09:41:53 +0200
On Tue, 2008-06-10 at 10:48 -0700, Ralph Giles wrote: > Does this mean the implementation must retrieve the self-described > pixel aspect ratio from the stream and supply it as part of the DOM? Yes, the implementation would read the pixel ratio from the video stream. In libtheora this is aspect_numerator/aspect_denominator of the th_info struct (yes, this is pixel ratio, not frame aspect ratio). This would all be handled by some multimedia framework anyway, so most browsers won't have to worry too much about such details. Exposing pixel ratio as readonly float videoPixelRatio in HTMLVideoElement might be a good idea. If the media resource doesn't self-describe its pixel ratio (many formats don't) it should be assumed to be 1.0. I'm not convinced it is necessary as content authors who want to be very explicit will probably set the pixelratio manually. Still, it is trivial to expose and might make life easier for those who want this information for low-level control of the video element size via the DOM. -- Philip J?genstedt Opera Software
Received on Wednesday, 11 June 2008 00:41:53 UTC