This works for me:
$ convert rose: -alpha set -define bmp:format=bmp3 -define bmp3:alpha=true test.bmp
$ file test.bmp
test.bmp: PC bitmap, Windows 3.x format, 70 x 46 x 32
But I don't why bmp4 one doesn't work.
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- 2019-05-30T09:33:04-07:00
- Forum: Users
- Topic: Convert to 32-bit depth BMP
- Replies: 7
- Views: 20377