Please more detail on (*) VRayOptionRE: Ability to update the exr metadata parameter in VRayOptionRE with a per-frame MaxScript callback;

[gandhics]

(*) VRayOptionRE: Ability to update the exr metadata parameter in VRayOptionRE with a per-frame MaxScript callback;
How can I use this?

[Margarita.Stoeva]

Hello!

There is an example at the bottom of our help page https://docs.chaosgroup.com/display/...X/VRayOptionRE (using animated cameraISO).
Generally, you use the exr_metadata parameter of VRayOptionRe to store custom string that updates on each frame when rendering a sequence. This metadata is saved with .exr raw output and can be read from the rendered images afterwards.

Best regards,
Margarita