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[feat] - viewer / batch convert - Change color depth to 8bit + Filter = mess

Posted: Fri Dec 16, 2022 4:15 pm
by user0
XnView MP 1.4.0 64bits
Windows 64bit (22H2), display resolution 3840x2160, win scaling 150%


Viewer (same behaviour in Batch convert)
Change color depth to 8bit + Filter = mess

To reproduce:
1. run clean portable XnViewMP
2. open any .jpg (e.g. 24bit, no alpha, no metadata)
3. open 'Change color depth' dialog
- set Colors 256 (any dithering)
- press OK
- (OPTIONAL) save as .png, close xnview and open this .png
4. open 'Filter' dialog
- tick 'Apply to image' - for easy check
- click on each filter
most of the Filters show mess
change_color_depth_and_filters.jpg


Test file in 'Batch convert'
test_png.zip
(149.3 KiB) Downloaded 9 times
batch_convert_mess.jpg

Re: 1.4.0 - viewer / batch convert - Change color depth to 8bit + Filter = mess

Posted: Fri Dec 23, 2022 3:26 pm
by xnview
yes normal. The only way is to convert the image into 24bits