To generate
a BMP (*.bmp) file, it is necessary to set the output format properly.
For that open
the "Profile Settings" dialog window (or make use of the "Properties"
window). In the Main section select "BMP, BitMap Page" from
the "Output
Format" list:
Image encoding parameters.
Color
Depth - the number of bits used for representation of one pixel
of the encoded image. This parameter can take one of the following values:
Keep original - if
selected, the source file's color depth will be used.