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Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 11:27 am
by kemenyadi
Hi, I'm experiencing a bug from MM4.
I have a PNG to share which looks incorrect when used in MM5. I use this file as a folder.png album cover. It seems like the low bit depth PNG is not decoded/consumed properly.

Original:
Image

Incorrectly displayed:
Image

Re: Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 11:38 am
by Lowlander
Can you try with the latest MediaMonkey 2024? It worked fine with the file you shared (although I don't know if it is unprocessed from your copy).

Re: Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 11:56 am
by MiPi
I tested with given 4bit PNG and it works in the last releases of MM5/MM2024 for me. It was fixed in 2018.

Re: Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 12:01 pm
by kemenyadi
You're right, imgur seems to have altered the file (larger).
https://filetransfer.io/data-package/q4OmUyHl

Re: Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 12:26 pm
by Lowlander
Have you tried it with the latest MediaMonkey 2024 as suggested above? New share works just fine here too.

Re: Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 12:36 pm
by MiPi
For me works the new file too.

Re: Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 2:18 pm
by kemenyadi
Works correctly in MM4. I have MM 5.0.5.2695
edit: trying the test build
Image

Re: Low bit depth PNG decoded incorrectly

Posted: Tue Nov 19, 2024 2:24 pm
by MiPi
I reproduced with MM 5.0.5.2695, but not with newest MM 2024 builds. So hopefully will be ok in the upcoming stable release, it should be released soon. You can always try latest build here: viewtopic.php?t=86639&sd=d

Re: Low bit depth PNG decoded incorrectly

Posted: Wed Nov 20, 2024 2:18 pm
by kemenyadi
Great thanks!