Extract OIIO - matte channel passthrough

Hey all! We have configured the Extract OIIO plugin to take our acesCG comp renders, reformat them to delivery rez, and convert to the log colourspace they were given to us in, works great.

However any channels that aren’t rgb are killed. This is a big issue for us, as we have to deliver mattes following the client’s conventions. Has anyone set up a workaround for passing all existing extra channels through? I’m not sure this can be achieved by extra args alone

Our use case may be tricky, as we want the reformatting to apply to the matte channel, but we don’t want any colour conversion

just noting that this was solved in improved OIIO subimages handling by ReeceMulley · Pull Request #920 · ynput/ayon-core · GitHub

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