iOS 18 HEIC Files

[kylew01]

I updated to iOS 18, and my HEIC images are no longer processed by imagick in Nextcloud. Where iOS is still in beta it may not be an issue, but it's probably something to keep an eye on as development continues.

The error it gives in Nextcloud is "ImagickException Failed to read the file".

[Danack]

If you think you've got a HEIC image that isn't processed successfully by Imagick/ImageMagick compiled with HEIC support, please can you provide that as an example image.

There is absolutely nothing I can do with a report of 'some images aren't being processed'.

btw, I have no idea what Nextcloud is. It is possible that the problem you're seeing is the fault of that platform.

[kylew01]

Sorry, although I never said "some", I do not think I made myself very clear--every HEIC, since updating to iOS 18, fails to process. Nextcloud uses imagick as its back-end to process the HEIC images.

If there's a command or something specific that I can do, I'd be happy to do that to provide more details.

[Danack]

Please provide any image.

There is absolutely nothing I can do with a report of something is wrong.

[kylew01]

IMG_4356.HEIC.zip

[Danack]

Thank-you for providing the image.

So trying to load that file using Imagick I get an error:

Fatal error: Uncaught ImagickException: Invalid input: Unspecified: Too many auxiliary image references (2.0) `/var/app/bugs/gh675/IMG_4356.HEIC' @ error/heic.c/IsHEIFSuccess/138 in /var/app/bugs/gh675/go.php:5

I have no idea what that means, but it looks like an error in the underlying HEIC image decoder.

Is it okay for me to post the image you provided elsewhere when I figure out which upstream library needs to have the bug reported at?

[Danack]

Oh. It looks like a very similar issue has just been reported at the libheif library, which is the underlying library that ImageMagick uses to process images: strukturag/libheif#1190

I'm guessing that IOS18 uses more advanced elements of that image format/container.

I'll keep watching that issue and check that the fix does work with Imagick when it is released.

[kylew01]

Yes, you can. Thank you for your help!

…

On Jun 17, 2024, at 8:57 AM, Danack ***@***.***> wrote: Thank-you for providing the image. So trying to load that file using Imagick I get an error: Fatal error: Uncaught ImagickException: Invalid input: Unspecified: Too many auxiliary image references (2.0) `/var/app/bugs/gh675/IMG_4356.HEIC' @ error/heic.c/IsHEIFSuccess/138 in /var/app/bugs/gh675/go.php:5 I have no idea what that means, but it looks like an error in the underlying HEIC image decoder. Is it okay for me to post the image you provided elsewhere when I figure out which upstream library needs to have the bug reported at? — Reply to this email directly, view it on GitHub <#675 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AHGDUHBNL466CXZHPA5PP7LZH32NBAVCNFSM6AAAAABJLWT6LOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCNZTGY2DCNZUHA>. You are receiving this because you authored the thread.

[ryanong]

This problem has been solved if you use libheif 1.18+