How to increase/decrease Color Depth?

[ColorDepth]

For video editing with Avisynth and HCenc I need to decrease the color depth of a bmp image to 2 colors and afterwards I need it to increase it to 16,7 (?24/32 Bit?) million colors again. I'd like to do this in PhotoFiltre, but since I don't know how to do this in PhotoFiltre I use IrfanView for this.

Is it possible to do color depth increasing/decreasing with PhotoFiltre too and if yes how?

[Antonio]

Use the menu Image > Mode to force 16M and save as BMP for example

[ColorDepth]

Thanks, I'll try that! Keep up the good work!

[ColorDepth]

Use the menu Image > Mode to force 16M and save as BMP for example

Unfortunately I don't have this Option in the english version 6.3.1 of PhotoFiltre. I'll stick with IrfanView for color depth increasing and decreasing then.