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Can't convert some PNG to JPEG using NConvert

Posted: Thu Sep 22, 2022 2:17 pm
by wint
Hello
Had some problem with convert PNG->JPEG via nconvert (with XNConvert all good - i used only Transparent color option and all good)

Via nconvert had error "Error: This picture cannot be written using this format".

Tried insert -merge_alpha, no success..... after tried -truecolors, error disappeared but in exit I had bad quality image with a bad shadows

Would be so grateful for help. thank you.

original png
original png
1aac2af3_397f_11ed_ba57_3cecef5e3ecc.png (129.5 KiB) Viewed 2504 times

result jpeg
result jpeg
1aac24c1_397f_11ed_ba57_3cecef5e3ecc.jpg (80.13 KiB) Viewed 2504 times

Re: Can't convert some PNG to JPEG using NConvert

Posted: Fri Sep 23, 2022 8:01 am
by xnview
it's an 8bits picture, you need to convert it into 32bits before (-32bits)

Re: Can't convert some PNG to JPEG using NConvert

Posted: Fri Sep 23, 2022 10:59 am
by wint
Thank you so much sir!!!!