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
<johannes.he...@googlemail.com
<mailto:johannes.he...@googlemail.com>> 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
l...@larrygritz.com <mailto:l...@larrygritz.com>
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