avif lossless bug
Posted: Thu May 15, 2025 11:21 pm
There seems to be bug in avif - save as lossless feature.
I have source file png of 11.6MB Below is what its size become when saving as lossless avif in different programs:
- image magic 5.6MB (quality=100)
- gimp 6.1MB (lossless checkbox)
- krita 6.2MB (lossless checkbox)
- xnview MP 15MB !! (lossless checkbox)
I think it can be reproduced with any file.
I am not sure how large it is of an issue as not yet sure which will become more important lossless saving algorithm (jxl or avif).
I have source file png of 11.6MB Below is what its size become when saving as lossless avif in different programs:
- image magic 5.6MB (quality=100)
- gimp 6.1MB (lossless checkbox)
- krita 6.2MB (lossless checkbox)
- xnview MP 15MB !! (lossless checkbox)
I think it can be reproduced with any file.
I am not sure how large it is of an issue as not yet sure which will become more important lossless saving algorithm (jxl or avif).