Here are just some of the graphics maniplation utilities that I've written because I've needed a particular batch functionality. I haven't tried compiling any of them under different compilers, but it's possible that they might work without any additional changes. See the bottom of this document for a quick summary of the various file formats. All of the below programs will display a quick usage summary when run without command line arguments.
Full source is included in each ZIP file.
Each frame of the flic file is cropped to the smallest region necessary to contain the image by discarding regions containing only a specified background color. Allows creation of interlaced or transparent GIF images. It will automatically suggest possible background colors if inefficient cropping is detected. For more information about the flic format, as well as other programs that work with them visit this location . Microsoft's videdit can also do some conversions of sequenced image files into AVI format.