Zopfli compression in 6.0.0 results in a corrupted image in some cases about oxipng HOT 9 CLOSED

Is there an issue filed upstream w/ zopfli itself?

No, there isn't, but that paperwork is not necessary because I'm a maintainer of that library, and I've just pushed a change that I believe will fix this issue: zopfli-rs/zopfli@fcfb76c.

I'll test the fix with OxiPNG for a bit to confirm that the attached images are working fine now.

from oxipng.

@AlexTMjugador didn't get any errors so far. Also tried a 5760x2160 image, although I don't know if that one would have thrown an error.

from oxipng.

Noticed the same on Windows 10. Think this only applies to high-resolution images.

from oxipng.

I'm sorry about the issue. It's caused due to the zopfli version bump to 0.7, which contains a regression that is generating corrupt streams (I can reproduce corruption problems by using the zopfli binary on the attached image). I'll try to dig further in it.

from oxipng.

Is there an issue filed upstream w/ zopfli itself?

from oxipng.

For your testing, here are some more images that failed on me. Weirdly it's not applying to all image of the same source.
Failing images for testing (issue 449).zip

Edit: Note that, at least I think so, the images got compressed with an older version, so you might see a 0,00% reduction.

from oxipng.

If you provide a compiled version, I can run tests too. I got the error on quite many images.

from oxipng.

Here it is a Windows build of the changes I'm testing. I've cross-compiled it from my Linux workstation and it seems to work well enough to show usage help under Wine: oxipng.zip

Edit: the problematic image attached by the issue poster has just been optimized successfully for me. Other images attached by @Maingron worked fine, too.

from oxipng.

Thank you all for your input 😄

I've just submitted a PR that should fix the issue.

from oxipng.