Multi channels support for exr or other container solution.

After this conversation

We got many renders from different perspectives and it seem like
a good idea to push all of the renders into one frame container .
GLTF might be an idea for the future.
but for now,

One image frame will contain :
4 channels RGBA (for example ) X 100 (number of cameras for example )

wonder if openexr is a good container for that.

"Arbitrary image channels
OpenEXR images can contain an arbitrary number and combination of image channels, fo
example red, green, blue, and alpha; luminance and sub

sampled chroma channels; depth,
surface normal directions, or motion vectors."