[whatwg] video tag: pixel aspect ratio

Sander van Zoest sander at vanzoest.com
Wed Oct 15 12:04:02 PDT 2008

On Wed, Oct 15, 2008 at 11:11 AM, Ralph Giles <giles at xiph.org> wrote:

> On Wed, Oct 15, 2008 at 2:40 AM, Ian Hickson <ian at hixie.ch> wrote:
> > Is that not enough?
> It is enough. Sander and Eduard have provided excellent arguments why
> the pixel aspect ratio, and especially the frame rate, should be
> represented as rationals in video formats. But as an override for
> already broken video streams compliance to best practice does not
> justify another data type in html5.

Is an integer another data type? Also, having non-square pixels is not
broken. If we go this route, we might as well get rid of the distinction all

> To put Anne's comment another way, one needs a gigapixel display
> device before the difference between 1.0925 (rounded to only 5
> figures) and 59/54 affects the behaviour of the scaling algorithm at
> all. There aren't so many aspect ratios is common use--you're welcome
> to choose the one nearest to the floating point value given if you
> think it's important.

I do not see why we are condoning hacks on top of hacks, when it is so
to just specify hSpace and vSpace.

-- Sander
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