[whatwg] HTMLMediaElement: more issues and ambiguities

Ian Hickson ian at hixie.ch
Tue Jul 22 14:58:36 PDT 2008

On Thu, 10 Jul 2008, Philip Jägenstedt wrote:
> > 
> > The idea is that if you set the override to a 1:2 ratio, then each 
> > pixel of video data will be rendered 1:2. So you first have to 
> > normalise the width, getting rid of the influence of the "official" 
> > pixel ratio. No?
> I understand what the intention is, but think the terminology is 
> confusing:
> - width given by the resource itself
> - height given by the resource itself
> - pixel ratio given by the resource itself
> I had thought that these 3 were actually orthogonal, such that the pixel 
> ratio does not affect the width or the height. Instead, it seems that 
> width/height is supposed to be aspect ratio pre-multiplied. This doesn't 
> sit well with my intuition of what the "self-given" width/height of 
> video is supposed to mean. If you open video in common media players the 
> "dimensions" or "width/height" will be the physical width/height, not 
> aspect-corrected width/height. Unless my intuition is severely broken, I 
> think other will also assume what I have assumed.

I've tried to make the spec generally much more explicit about this. 
Please let me know if the spec makes more sense now. I can definitely 
still change the terminology if you think it is still confusing.

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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