Oh, I think I understand what is happening. oiiotool actually does its work in
the sequence that you specify it, so:
oiiotool my_input.exr \ # read my_input.exr, that's now the
current image
-o output.jpg \ # write the current image as a
JPEG -> ERROR
-ch R,G,B \ # replace current image with one
that's the R,G,B of the old current
So instead if you said
oiiotool my_input.exr -ch R,G,B -o output.jpg
it should all work properly, in that you are reducing to 3 channels before
saving a JPEG file (which doesn't support >3 channels).
If you also tried --croptofull after the output, that would explain why it also
did not work as expected.
On Dec 12, 2012, at 9:42 AM, Andrew Wood wrote:
> Hey all,
>
> having some problems converting an exr to jpg
>
> I think I may be misunderstanding how --ch works (built 1.1.2) --my command
> looks something like this:
>
> >oiiotool /var/tmp/my_input.exr -o /var/tmp/output.jpg --ch R,G,B
> oiiotool ERROR: jpeg does not support 5-channel images
>
> in case it helps, the header of the exr looks like this:
> file format version: 2, flags 0x0
> channels (type chlist):
> A, 16-bit floating-point, sampling 1 1
> B, 16-bit floating-point, sampling 1 1
> G, 16-bit floating-point, sampling 1 1
> R, 16-bit floating-point, sampling 1 1
> depth.Z, 16-bit floating-point, sampling 1 1
> compression (type compression): zip, individual scanlines
> dataWindow (type box2i): (-85 -114) - (2139 1219)
> displayWindow (type box2i): (0 0) - (1919 1079)
> lineOrder (type lineOrder): increasing y
> nuke/nkscript (type string):
> "/dd/shows/DEVTD/SR/9999/user/work.awood/nuke/submission.nk"
> nuke/node_hash (type string): "8dccfb2b2dc60e20"
> pixelAspectRatio (type float): 1
> screenWindowCenter (type v2f): (0 0)
> screenWindowWidth (type float): 1
>
> (also, small point, I was hoping to crop down to displayWindow and ignore the
> dataWindow. I tried --croptofull, but that didn't have an effect. am I
> misunderstanding that one too?)
>
> thanks in advance!
> Andrew
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--
Larry Gritz
[email protected]
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