This parameter and menu item specify the format MPRender should use to save the output images.
The following formats are available:
BW16 : 16 colour grey scale ILBM BW256 : 256 colour grey scale ILBM HAM6 : HAM6 ILBM with fixed (internal) palette HAM6P : HAM6 ILBM with computed or supplied palette HAM8 : HAM8 ILBM with fixed (internal) palette HAM8P : HAM8 ILBM with computed or supplied palette EHB : EHB ILBM with computed or supplied palette COLOUR : 2 to 256 colour ILBM with computed or supplied palette ILBM24 : 24 bit ILBM PPM : P5 (if grey input) or P6 PBM format JPEG : JPEG format (using cjpeg) PNG : PNG format (using pnmtopng) DCTV3 : 3 plane DCTV ILBM with dctv.library version 3 DCTV4 : 4 plane DCTV ILBM with dctv.library version 3
If the output format is not a 24 bit format then the image is dithered using the Floyd-Steinberg method.
PPM format is basically uncompressed 24 bit. The files are therefore very large and it is suggested that a compressing file handler (such as XFH or EPU) is used. This format is provided mainly to allow the easy production of MPEG movies.