The AVS Image File Format The specification for the AVS image file format is provided in the AVS documentation, but does not appear to be on-line anywhere. Here is what I have gleaned about the format by talking to a couple of people (thanks to David McNabb and Alex Knowles). The file is a simple binary format. It starts with an 8 byte header which consists of: width (4 bytes) and height (4 bytes). This is followed by a series of 4 bytes per pixel (alpha, red, green, blue; in that order). The size of a file can therefore be calculated as: 8 + 4*width*height. Pixels are provided in a left->right, top->bottom order. E.g. <4-bytes-width><4-bytes-height><4-bytes-argb><4-bytes-argb>... The normal filename extension used for AVS images is ".x". Example images can be found from the International AVS Centre ftp site at: http://www.iavsc.org/Data/avs_data/woodworking_images/ ---- Martin Reddy, 24 Feb 1997.