Use this option to specify the width and height of raw images whose dimensions are unknown such as GRAY, RGB, or CMYK. In addition to width and height, use this option to skip any header information in the image (e.g. 640x512+256).

The format of the size option:

    <width>{%}x<height>{%}{+offset}{!}
<pre>

For Photo CD images, choose from these sizes:

<pre>
   192x128
   384x256
   768x512
   1536x1024
   3072x2048