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Re: Fwd: video size when aspect ratio is not 1

From: Conrad Parker <conrad@metadecks.org>
Date: Sun, 23 Aug 2009 10:56:36 +0900
Message-ID: <dba6c0830908221856h21cf2f70l13a55482bde0830f@mail.gmail.com>
To: Philip Jšgenstedt <philipj@opera.com>
Cc: Silvia Pfeiffer <silviapfeiffer1@gmail.com>, RaphaŽl Troncy <Raphael.Troncy@cwi.nl>, Media Fragment <public-media-fragment@w3.org>
2009/8/23 Philip Jšgenstedt <philipj@opera.com>:
> On Sat, 22 Aug 2009 16:54:02 +0200, Silvia Pfeiffer
> <silviapfeiffer1@gmail.com> wrote:
>
>> 2009/8/22 RaphaŽl Troncy <Raphael.Troncy@cwi.nl>:
>>>>
>>>> just came across this on whatwg. I think it also applies to our aspect
>>>> fragment addressing, right?
>>>
>>> Indeed. The aspect ratio is defined in our document as a way to crop an
>>> image to a centered area given the defined aspect ratio. We then write:
>>> "The original media is cropped either horizontally or vertically to the
>>> maximum size that has the given aspect ratio."
>>> I realize that we have no use case that clearly shows the need for such a
>>> feature. Perhaps we could add one, what do you think?
>>
>> Yes, I do think we need a use case for aspect - when I re-read this
>> part recently, I found it a strange MF addressing type. If you have an
>> idea, please share / add.
>
> I think the only use case if fixing files which are incorrectly encoded or
> for file formats that simply can't contain aspect ratio information. This
> was actually in HTML5 before but was dropped because it wasn't seen as very
> important.

That sounds like adding information which isn't present in the
resource for some reason. It doesn't seem like it has anything to do
with accessing or addressing the resource.

Also it sounds like the use case is to give a hint to a custom HTML5
video application, which then uses javascript to render to the correct
aspect. Surely that custom hint could just as easily be given in a
different <video> attribute or within the page javascript or
something?

Conrad.
Received on Sunday, 23 August 2009 01:57:15 GMT

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