OpenEXR

OpenEXR is the industry-standard image format in the animation and VFX production.

It’s capable of storing float color values instead of integer in either 16 bpc or 32 bpc, using either the RGB or YUV systems, and other pixel values (layers). When using YUV it has a Luma / Chroma option to reduce file size similarly to what’s called 4:2:0 with video streams. It is colorspace agnostic.

For now, DuME can read all OpenEXR files, but can’t output graphs to this format (DuME is a media encoder, not a compositing software, and can’t output float color values). DuME can be used to simply convert OpenEXR colors though.

Input

There are a few specific settings for OpenEXR files in the settings tab of the properties panel of the input file node

As for any image sequence, you’ll have to set the framerate, but also handle the colorspace.

By default, DuME considers OpenEXR files to be standard Linear RGB / Linear Rec.709. If this is actually the case with your files, you don’t have anything to do.

Convert EXR Colors

DuME also has an easy way to convert the colors of any OpenEXR sequence.