Only first Frame Channel Information in Multi part OpenEXR file is readable

Started by jho, January 27, 2023, 10:43:41 AM

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when reading out the channel info for a Multi Part OpenEXR file, only the channel names for the first Frame inside the OpenExr is read out.

This tool can show all the channels:

I have attached an example exr file: image_001.7z

Here you can see screenshots from an app which also can only show the first frame channels. The other screenshot shows all channels for in total 4 Frames in the image.
exr_not_all_channels.png  exr_all_channels.png


I found by coincidence a small cmd line tool in Natron VFX which I can use for reading out the complete header: Exrheader.exe from the Natron bin folder.

Phil Harvey

Thanks for this suggestion and for the sample image.

ExifTool 12.56 will enhance the -ee option to read metadata from all frames of a multipart EXR image.

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).