I don't know. Windows people -- does anybody maintain a fairly current full
OIIO Windows binary build?
-- lg
> On Nov 7, 2019, at 2:29 PM, Johannes Hezer <[email protected]>
> wrote:
>
> Thanks for the answer...
> I'll look into python then. Are there binaries for win available with python
> bindings and ocio?
> Have not been keeping track if this is already available through the aswf
> ci/cd implementation...
> I got stuck with vcpkg when adding the python bindings.
>
>
> Am 07/11/19 um 21:26 PM schrieb Larry Gritz:
>> Yeah, that is unfortunately a very awkward thing, as oiiotool doesn't give
>> you a clear way to express that you want different parts (aka subimages) of
>> a multi-image file to have different data types. It tries to remember the
>> data type of the input image, then apply that to the output (if you don't
>> override it with `-d`), but it only remembers one type (the first input it
>> encountered), it's not a per-subimage value.
>>
>> Do the channels have unique names across all the parts? I wonder if you
>> could make a complicated -d override. Let's say that you had image
>> "beauty.exr" with channels R,G,B,A, and image "specular.exr" with channels
>> spec.R,spec.G,spec.B, and you want (for the sake of argument) for the spec
>> channels to be float versus the default of everything else to be half. Would
>> this work?
>>
>> oiiotool beauty.exr specular.exr --siappend -d half -d spec.R=float -d
>> spec.G=float -d spec.B=float -o combined.exr
>>
>> I haven't tried. It might work? I could probably extend the -d syntax so
>> that `-d name=type` also recognizes if name is the name of a subimage and
>> applies the type to the output of all channels in that subimage?
>>
>> Rather than fight oiiotool, another way to skin this cat is to just write a
>> fairly compact Python script to read the inputs and output them as subimages
>> to the same file, and you can easily control the types that way.
>>
>> -- lg
>>
>>
>>> On Nov 7, 2019, at 11:26 AM, Johannes Hezer <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>> Hey,
>>>
>>> lately we had some images coming from the farm which were not multipart
>>> exrs, (submission error) still multichannel exrs, with different bit depths
>>> per channel.
>>> I was wondering if oiiotool could convert the single multichannel exr into
>>> a single multichannel, multipart exr and all bit depths remain the same per
>>> channel ?
>>> Also what we noticed, in our internal exr converter we added all metadata
>>> per default to all parts, this was causing performance issues in nuke,
>>> especially with cryptomatte and lots of objects.
>>>
>>> How does oiiotool handle this ? Regarding the metadata ?
>>> We solved the performance issue when we only added the metadata to part 0...
>>> And is there a way to set a roi or dod from the alpha ?
>>>
>>> I gave it some time to come up with a commandline, but without success...
>>>
>>> Thanks in advance
>>>
>>> Johannes
>>>
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>>>
>>
>> --
>> Larry Gritz
>> [email protected] <mailto:[email protected]>
>>
>>
>>
>>
>>
>>
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>
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--
Larry Gritz
[email protected]
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