convert 24bit jpg to 8bit bmp

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timkelley66
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Joined: 2011-11-03T09:17:04-07:00
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convert 24bit jpg to 8bit bmp

Post by timkelley66 »

I am trying to convert (using convert.exe) a jpg to a bmp file and change the color depth to 8 bits. Here are the commands I have tried:
Convert.exe 501021.jpg -depth 8 -resize 172x228! 501021.bmp
Convert.exe 501021.jpg -color 256 -resize 172x228! 501021.bmp
The new bmp file is still at 24bits.
Is there another option I need to be using?

IM 6.6.1-7 Q16
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fmw42
Posts: 25562
Joined: 2007-07-02T17:14:51-07:00
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Location: Sunnyvale, California, USA

Re: convert 24bit jpg to 8bit bmp

Post by fmw42 »

The problem is that you need to resize before -colors 256 or -depth 8. The resizing will create new colors.
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