current master.
oiiotool in.exr -attrib "PixelAspectRatio" 0.5 -o nonsquare.jpg
On Wed, Feb 18, 2015 at 1:50 PM, Larry Gritz <[email protected]
<mailto:[email protected]>> wrote:
This is with the current master, or with the head of RB-1.5?
JPEG file? Can you tell me exactly what command line you tried?
On Feb 18, 2015, at 1:22 PM, ran sariel
<[email protected]
<mailto:[email protected]>> wrote:
> Hey Larry
>
> no still not working,.
> I'm passing in 0.5 as the PixelAspectRatio and still
getting a square image in RV, seems that the -attrib
"PixelAspectRatio" is not doing anything.
>
> Ran
>
>
> On 02/18/2015 12:08 PM, Larry Gritz wrote:
>> Yes, PixelAspectRatio has had these fixes (improved for
JPEG, TIFF, and OpenEXR) in the current master for a couple
weeks now, with no complaints, so I just backported it to
1.5. It should be in the current RB-1.5 top of tree, but I
have not yet tagged a release for it yet.
>>
>> Note that we try to do it *correctly*, but have
identified a way in which, just for JPEG files, Nuke,
PhotoShop, and RV do something weird and apparently contrary
to the JFIF spec. The net result is that if you are using
oiiotool to set the PixelAspectRatio for a JPEG file that
will be consumed by one of those programs, you may have to
specify the inverse of the aspect ratio (e.g., 0.5 when you
really want 2 for a "wide" pixel). This is only an issue for
JPEG files with non-square aspect.
>>
>> -- lg
>>
>>
>> On Feb 18, 2015, at 9:32 AM, ran
sariel<[email protected]
<mailto:[email protected]>> wrote:
>>
>>> Hi Larry
>>>
>>> Has there been any changes to support the pixelAspectRatio?.
>>>
>>> Cheers
>>> Ran
>>>
>>>
>>> On 02/03/2015 10:30 PM, Larry Gritz wrote:
>>>> I'm liking this plan. Let's proceed for now by doing
the right thing, and a few people who notice a problem can
just invert how they request aspect ratio from oiiotool.
>>>>
>>>> If this is a continual problem (more and more people
confused by this behavior, reporting it as a bug), then we
can consider doing the "wrong" thing, just for JPEG, in
order to produce files that use the same incorrect
convention as Nuke and RV.
>>>>
>>>> I'm crossing my fingers that the combination of
non-square pixel aspect and JPEG files is rare -- after all,
nobody had noticed the issue at all until now.
>>>>
>>>> -- lg
>>>>
>>>>
>>>> On Jan 30, 2015, at 5:17 PM, ran
sariel<[email protected]
<mailto:[email protected]>> wrote:
>>>>
>>>>> since I'm the one bringing all this headache ..
>>>>> I'm totally happy with defining PixelAspectRatio as
0.5 when converting with oiiotool. expecting it to show in
the RV/Photoshot as aspectRatio 2.
>>>>>
>>>>>
>>>>> On 01/30/2015 04:58 PM, Larry Gritz wrote:
>>>>>> On Jan 30, 2015, at 4:38 PM, Nathan
Rusch<[email protected] <mailto:[email protected]>>
wrote:
>>>>>>
>>>>>>> It seems absurd, but kind of looks like its going to
come down to whether you would rather OIIO be technically
correct (as we understand it), but annoy people and prompt
them to submit erroneous bug reports by creating images that
look wrong in all the applications they are viewed in, or
have it be "wrong" for the sole purpose of keeping people
happy. Tough call indeed...
>>>>>> Head exploding...
>>>>>>
>>>>>>
>>>>>>
>>>>>>> Is it worth getting in touch with the maintainers of
libjpeg to see if they would stand by the comment in their
source as it relates to the JFIF spec? Or maybe just asking
The Foundry and Tweak about performing an about-face?
>>>>>> I'm happy to contact all three. But if they change,
there will be a versionitis problem between old and new
versions of those packages. And in any case, PhotoShop is
still backwards as well, and my intuition is that my chances
of getting them to change, or to care at all, is much less
than with Nuke and rv, where at least I know people who
would humor me by listening to me make a case for it.
>>>>>>
>>>>>> Sigh. I'll do some experiments to see if there's any
way around this. At the very least, I want to restrict the
wrongness to be completely contained in the JPEG read/write,
and not infect the rest of OIIO (including the app side),
where aspect> 1 should certainly mean wide pixels.
>>>>>>
>>>>>> Another consideration: In 6 years, we have not had a
single comment about our JPEG I/O not supporting aspect
ratio or the resolution fields until this week, so perhaps
the number of people who will be annoyed by our doing it
"right" may be extremely limited, and a better solution is
to make sure those few people know the weird set of hoops to
jump through to make the images right in Nuke and rv (e.g.,
if you want aspect 2.0, you should ask oiiotool for 0.5).
>>>>>>
>>>>>> -- lg
>>>>>>
>>>>>> --
>>>>>> Larry Gritz
>>>>>> [email protected] <mailto:[email protected]>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Oiio-dev mailing list
>>>>>> [email protected]
<mailto:[email protected]>
>>>>>>
http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
>>>>> --
>>>>> Ran Sariel
>>>>> CTO / Pipeline supervisor
>>>>> The Embassy VFX Inc.
>>>>> 177 West 7th Ave, 4th Floor
>>>>> Vancouver, BC
>>>>> Phone: (604) 696-6862 ext. 244
<tel:%28604%29%20696-6862%20ext.%20244>
>>>>>
>>>>> [email protected] <mailto:[email protected]>
>>>>>
>>>>> _______________________________________________
>>>>> Oiio-dev mailing list
>>>>> [email protected]
<mailto:[email protected]>
>>>>>
http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
>>>> --
>>>> Larry Gritz
>>>> [email protected] <mailto:[email protected]>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Oiio-dev mailing list
>>>> [email protected]
<mailto:[email protected]>
>>>>
http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
>>> --
>>> Ran Sariel
>>> CTO / Pipeline supervisor
>>> The Embassy VFX Inc.
>>> 177 West 7th Ave, 4th Floor
>>> Vancouver, BC
>>> Phone: (604) 696-6862 ext. 244
<tel:%28604%29%20696-6862%20ext.%20244>
>>>
>>> [email protected] <mailto:[email protected]>
>>>
>>> _______________________________________________
>>> Oiio-dev mailing list
>>> [email protected]
<mailto:[email protected]>
>>>
http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
>> --
>> Larry Gritz
>> [email protected] <mailto:[email protected]>
>>
>>
>>
>> _______________________________________________
>> Oiio-dev mailing list
>> [email protected]
<mailto:[email protected]>
>>
http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
>
> --
> Ran Sariel
> CTO / Pipeline supervisor
> The Embassy VFX Inc.
> 177 West 7th Ave, 4th Floor
> Vancouver, BC
> Phone: (604) 696-6862 ext. 244
<tel:%28604%29%20696-6862%20ext.%20244>
>
> [email protected] <mailto:[email protected]>
>
> _______________________________________________
> Oiio-dev mailing list
> [email protected]
<mailto:[email protected]>
>
http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
--
Larry Gritz
[email protected] <mailto:[email protected]>
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