Which version of OIIO? And I don't suppose you can send me an example PNG that has the problem? Or is it weird for every png you try?
> On Feb 8, 2019, at 10:59 AM, Stephen Parker <[email protected]> > wrote: > > Hello, > > I'm having some trouble using oiiotool's copy channel operator. It might be > user error but I wanted to check and see if it's intended behavior. I've only > glanced at the code so far. > > My test image is a PNG (4-channel RGBA), but only has information in the > Alpha. When attempting to copy the Alpha into the other 3 channels and write > out an RGB image (no Alpha), I get black. Imagemagick's 'convert' did what I > expected. > > invoked as: > > oiiotool input.png --ch "R=A,G=A,B=A" -o output.png > > I also tried using the numeric channel labels to no avail. > > -sp > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org -- Larry Gritz [email protected]
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