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

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Sun, 23 Aug 2009 23:24:19 +1000
Message-ID: <2c0e02830908230624k71016defv1a18da28afb5b147@mail.gmail.com>
To: Philip Jägenstedt <philipj@opera.com>
Cc: Conrad Parker <conrad@metadecks.org>, \"Raphaël Troncy <Raphael.Troncy@cwi.nl>, "\"Media <Fragment" <public-media-fragment@w3.org>
On Sun, Aug 23, 2009 at 8:43 PM, Philip Jägenstedt<philipj@opera.com> wrote:
> On Sun, 23 Aug 2009 03:56:36 +0200, Conrad Parker <conrad@metadecks.org>
> wrote:
>
>> 2009/8/23 Philip Jägenstedt <philipj@opera.com>:
>>>
>>> On Sat, 22 Aug 2009 16:54:02 +0200, Silvia Pfeiffer
>>> <silviapfeiffer1@gmail.com> wrote:
>>>
>>>> 2009/8/22 Raphaël 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?
>
> Yep, I have no objections to MF not having an aspect ratio syntax.

Yeah, I tend towards that, too. But I wasn't part of the discussions
that brought it in, so I'm curious about what use cases people had in
mind.

Silvia.
Received on Sunday, 23 August 2009 13:25:14 GMT

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