[Bf-funboard] Node-editor exr reordering request

[Kovacs Peter G.]

Hi all,

I am working on many projects with Blender. We built up a good pipeline around it, we have some scripts to make it more usable, and so on. I have faced with a strange problem around the multilayer OpenEXR file handling. If I am rendering scene in our current projects with 4 layers and around 20 passes I've got a big EXR file, and I can use it many ways. It's a good deal. I put it as an input node into the Blender's Node Editor, and everything is fine. But If I need to change a layer or some passes, I re-render it on our farm, and after than I put the results again into the Node Editor, and everything goes on its right way. But we are storing in a 1000 frame sequence est. 37 200 Mb useless data, and I can't re-build with the corrected passes or layers the original multilayer image sequence. Therefore if it is possible we need a multilayer writer node, to reconstruct a multilayer OpenEXR file at the end of the compositing tree. Usually we separate, combine
 and store the RGBA image files in a comp. tree. So it should be a big advantage if somebody can help with this request.

If you need i can draw a simple pipeline to represent the logic of my idea.

all the best for ya,

      Peter G. Kovacs
digital vfx artist, producer