(Bug): Natron Doesn't read EXR file and show "0x0" on the viewport

[ArtisticDoctor]

Make sure to follow our issue report guidelines

• [X] I'm using the latest version of Natron (not required but recommended)
• [X] I've restarted Natron and the issue persists
• [ ] I've run Natron via the command line and the issue persists
• [X] I've followed the contributing guidelines to the best of my understanding
• [X] My issue is not on the issue tracker or in a pull request already (go search for it and dig around a little bit!)
• [X] This bug is reproducible

Natron version

Natron 2.5

Operating system

Windows 10 latest version

System specs

RAM 32 GB Nvidia 1070 8GB Intel i7 7700k

Did you install Natron using the official installer?

• [X] Yes, I used the official installer
• [ ] No, I installed from a binary archive
• [ ] No, I compiled Natron from sources
• [ ] No, I installed Natron via another method

Custom installation path

No response

What were you trying to do?

Just working on my Compostiting exercice and the EXR files don't seem to work but the viewport can show either a constant node or a simple jpg image

What did you expect to happen? What happened instead?

I drag and dropped an exr sequence (wich worked in my office and can be oppened by any other software) and when i tried to read the sequence an "0x0" appeared on the viewport

Step-by-step reproduction instructions

Strart natron Read an exr sequence or image can't read the sequence

Additional details

No response

[rodlie]

Hi,

Do you have a sample file I could test?

[ArtisticDoctor]

hi do you wan't a project file or some of my exr's file ?

[rodlie]

Just need one exr file.

[ArtisticDoctor]

https://drive.google.com/file/d/15GVB64Q7-4bPsWs949p64-pBibwa93DZ/view?usp=sharing

Github does not support .exr format here is a link to it

[rodlie]

Thanks, I'm able to read the file.

I also duplicated the file a couple of times to simulate a sequence, drag-and-drop and regular read worked for me. Strange.

[ArtisticDoctor]

yeah it's very weird i get this view

[ArtisticDoctor]

with the settings

[rodlie]

Odd.

• Could you click the File Info button in the reader properties and see what you get in return?
• Is this a clean install, or did you upgrade from v2.4?
• Does the full path to the image(s) contains any special characters (accent etc)?

[ArtisticDoctor]

This is a clean install and i it's the second time i installed the software

when i click on file info it quickly pop a red message on the viewport

the full path of the image doesn't seem to contain any problematic characters

[devernay]

@ArtisticDoctor

• Any relevant messages in the console?
• Can you read PNGs?
• In the PNG Read node, can you please switch the Decode to OIIO? If there's an error message saying Gamma2.2 not available, type "sRGB" in the file colorspace? Works?
• Can you read JPGs ?

@rodlie do you bundle exrheader or iinfo with Natron on windows? The issue may be with OpenEXR or OIIO.

[rodlie]

Just tested at work (Win10, at home I tested with Win11), and works here too:

C:/Users/rodlie/Downloads/ribouletArthur_SET_Formica.048_0001.exr : 1920 x 1080, 95 channel, float openexr

Any relevant messages in the console?

@ArtisticDoctor : The console must be enabled, go to edit=>preferences=>user interface=>enable console window=>tick and restart Natron

(or just open cmd and start Natron from there)

do you bundle exrheader or iinfo with Natron on windows?

yes and yes.

@ArtisticDoctor : one last thing, could you copy the file to your desktop or somewhere in your home folder and try to open it in Natron from there?

[ArtisticDoctor]

At work Right now but will get back to you a soon as possible

[Egrazil]

I was having a similar issue I believe. Natron was not showing anything from an exr file. I had the exr file on an external drive, moving it to my C:\ drive (my desktop specifically) however, fixed the issue.