Created AVIF files don't display in Firefox about pdn-avif HOT 3 CLOSED

The image is 800x600px. The "Very Slow" preset workaround worked, thanks! I tested all presets, only the "Fast" one has that error in FF.

That confirms that it is the same Firefox bug I mentioned in my previous post.

I also opened a bug on Bugzilla, so hopefully this can also be fixed on Firefox' side.

Could you post a link in that issue to: https://bugzilla.mozilla.org/show_bug.cgi?id=1696090
Your issue is a duplicate of that one.

from pdn-avif.

What are the dimensions of the image you are trying to save?

I believe this is an issue with PDN because Firefox can load other AVIF images just fine.

I suspect it is an existing bug in Firefox's AVIF support, Firefox does not support loading AVIF files that use an image grid.
As a workaround, you can save the image using the Very Slow compression preset.

This Paint.NET plugin uses an image grid to reduce memory usage and improve UI responsiveness when encoding AVIF images.

The AVIF validator spits out multiple warnings about tile widths and heights that they should be multiples of 64.

I was unaware of that tile size recommendation. It appears that libavif also ignores it when creating grid images:

// The priority could be to use a cell size that is a multiple of 64, but there is not always a valid one,
// even though it is recommended by MIAF. Just use ceil(numPixels/numCells) for simplicity and to avoid
// as much padding in the right-most and bottom-most cells as possible.

https://github.com/AOMediaCodec/libavif/blob/454adbf5c27d24e1645cae53c1c659d46e07f657/apps/avifenc.c#L533

from pdn-avif.

The image is 800x600px. The "Very Slow" preset workaround worked, thanks! I tested all presets, only the "Fast" one has that error in FF.

I also opened a bug on Bugzilla, so hopefully this can also be fixed on Firefox' side.
Thanks again!

from pdn-avif.