simple change color depth of the input image to BitsPerPixel and save file

[farout1234]

I wrote a batch file
"C:\Program Files\IrfanView\i_view64.exe" "D:\A-IHT website\icons\tilesDB\tiles24\%1" /ini="D:" /advancedbatch
the ini is processed
and irfan is opened showing the result of the new color depth

BUT how do I get it to write that image back out and close irfan in the batch file above????

In other words I want to change the color depth of an image file and write the result automatically to another file!

What is the secret majic??

[IrfanUserGuyxyx]

add:

/convert=filename

and possibly:

/cmdexit

see Help/Irfanview help/Command Line Options

[farout1234]

thanks for reply

I thought that may be it and already tried
"C:\Program Files\IrfanView\i_view64.exe" "D:\A-IHT website\icons\tilesDB\tiles24\%1" /ini="D:" /advancedbatch /convert="D:\A-IHT website\icons\tilesDB\tiles8\%1" /cmdexit
but the file saved was not changed???

[farout1234]

this works
"C:\Program Files\IrfanView\i_view64.exe" "D:\A-IHT website\icons\tilesDB\tiles24\%1" /ini="D:" /advancedbatch /convert="D:\A-IHT website\icons\tilesDB\tiles8\test.bmp"
the bmp has 256 colors
following that command with
"C:\Program Files\IrfanView\i_view64.exe" "D:\A-IHT website\icons\tilesDB\tiles8\test.bmp" /convert="D:\A-IHT website\icons\tilesDB\tiles8\%1"
the resulting jpg is still 16M colors
%1 = 47174426.jpg

[farout1234]

It works! Excellent work and thank you
See my bug report

https://irfanview-forum.de/forum/program/bugreports/96703-jpg-246bpp-conversion