usage: prog [options] input_stack.hed output.(gif:pnm)
	Converts a 2D image stack into a GIF/PNM animation using ImageMagick (which must be installed for this to work)

Option Type Description
--version None show program's version number and exit
--scale, -S float Scale factor
--pingpong None Cycle through the sequence forwards then backwards
--contrast, -C float Relative setting. Try 0.75 if images too bright. Default 1.0
--last, -M int Number of last image to use
--ppid int Set the PID of the parent process, used for cross platform PPID
--verbose, -v int verbose level [0-9], higher number means higher level of verboseness