ExifTool Forum

ExifTool => Bug Reports / Feature Requests => Topic started by: jho on January 27, 2023, 10:43:41 AM

Title: Only first Frame Channel Information in Multi part OpenEXR file is readable
Post by: jho on January 27, 2023, 10:43:41 AM
Hi,
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: https://github.com/Acly/hdrv/releases/tag/v0.7

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


Title: Re: Only first Frame Channel Information in Multi part OpenEXR file is readable
Post by: jho on January 31, 2023, 05:40:40 AM
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.

https://natrongithub.github.io
Title: Re: Only first Frame Channel Information in Multi part OpenEXR file is readable
Post by: Phil Harvey on January 31, 2023, 08:36:49 AM
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