It takes a little mental gymnastics, but I think this might work: oiiotool v004.2500.exr -subimage 0 -ch R,G,B v004.2500.exr -subimage 1 -ch A=red -chappend -o out.exr
So this grabs - the source image, takes just the first (i.e., #0) subimage, and just the R,G,B channels - the source image again, taking just the second (#1) subimage, extract just "red" and rename "A" - combines those two into one image with all four channels - output the result > On Apr 8, 2021, at 2:04 PM, Jerome Raim <jerome.r...@gmail.com> wrote: > > Hello all, > Trying all sorts of things but not figuring out the proper syntax. > > > I have the following multi image EXR: > oiiotool -a -v --info v004.2500.exr > Reading v004.2500.exr > v004.2500.exr : 4956 x 2478, 4 channel, half openexr > 2 subimages: 4956x2478 [h,h,h,h], 4956x2478 [h,h,h,h] > subimage 0: 4956 x 2478, 4 channel, half openexr > channel list: R, G, B, A > compression: "none" > framesPerSecond: 24000/1001 (23.976) > name: "rgba.main" > nuke/full_layer_names: 0 > nuke/node_hash: "49f5abcb029f7aef" > nuke/version: "11.3v4" > PixelAspectRatio: 1 > screenWindowCenter: 0, 0 > screenWindowWidth: 1 > view: "main" > oiio:ColorSpace: "Linear" > oiio:subimagename: "rgba.main" > oiio:subimages: 2 > openexr:chunkCount: 2478 > openexr:version: 1 > smpte:TimeCode: 01:01:02:11 > subimage 1: 4956 x 2478, 4 channel, half openexr > channel list: red, green, blue, alpha > compression: "none" > name: "matte_01.main" > PixelAspectRatio: 1 > screenWindowCenter: 0, 0 > screenWindowWidth: 1 > view: "main" > oiio:ColorSpace: "Linear" > oiio:subimagename: "matte_01.main" > oiio:subimages: 2 > openexr:chunkCount: 2478 > openexr:version: 1 > > I'm struggling to figure out the proper syntax to do the following: > > grab R,G,B channels from rgba.main > and > grab red from matte_01.main and map it to A > = yielding a single RGBA image > > Alternatively, curious how to do: > grab R,G,B channels from rgba.main > and grab red from matte_01.main > delete all other channels > = yielding main.red, main.green, main.blue, matte.matte01 (previously called > matte_01.red) > > Thanks in advance! > > Best, > Jerome > > _______________________________________________ > Oiio-dev mailing list > Oiio-dev@lists.openimageio.org > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org -- Larry Gritz l...@larrygritz.com
_______________________________________________ Oiio-dev mailing list Oiio-dev@lists.openimageio.org http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
