Save the file as "creategif", or something else to your taste, make it executable and put it in the same directory as your sequence of pngsįor a sequence foobar004.png, foobar005.png, foobar006.png.
Paste the following into a text file: #!/bin/bashįfmpeg -framerate 24 -start_number_range 999 -f image2 -i $1%3d.png -filter_complex " split palettegen paletteuse" $1.gif It runs through the images twice: pass "a" to work out an optimal colour palette, then pass "b" to actually create the gif file using the created palette. I wrote a tiny script to do the job so I don't have to remember.
-vf scale=512:-1: set the width, scale height proportionally, usually to reduce size and save spaceįfmpeg can do it all for you but it is really hard to get your head around it. -framerate 60 and -r 15: assume 60 FPS on input images ( ffmpeg cannot know otherwise since no FPS data in images as in video formats), pick one every 4 images so reduce size ( 4 = 60 / 15). -pattern_type glob: convenient way to select images. The important ffmpeg options I wanted to highlight are: The manual also mentions that, some day, they eventually hope to be able to make -dSAFER the default though, given backwards compatibility needs, who knows if that will ever happen.To complement this answer: wget -O opengl-rotating-triangle.zip UPDATE: I've since learned that -o foo.png is a cleaner, easier-to-remember shorthand for -dBATCH -dNOPAUSE -sOutputFile=foo.png so the better command would be this: gs -dSAFER -dEPSCrop -r600 -sDEVICE=pngalpha -o foo.png myfile.eps The -sDEVICE specifies the output format (See the Devices section of the manual for other choices.). 
The -r600 specifies the DPI you want to render at. -dEPSCrop asks for the rendered output to be cropped to the bounding box of the drawing rather than padded out to the declared page size (See the manual for details.). 
-dNOPAUSE prevents it from prompting to continue after each page. -DBATCH causes it to quit when it reaches the end of the input file, rather than switching to an interactive PostScript prompt. (Yes, the parts of EPS, PS, and PDF files that define the page contents are in a turing-complete programming language.) -dSAFER puts Ghostscript in a sandboxed mode where Postscript code can only interact with the files you specified on the command line. For anyone who lands here trying to figure out how to work around ImageMagic's convert: not authorized without reverting the change that was made to the system-wide security policy to close a vulnerability, here's how to rasterize EPS files by calling Ghostscript directly: gs -dSAFER -dBATCH -dNOPAUSE -dEPSCrop -r600 -sDEVICE=pngalpha -sOutputFile=foo.png myfile.eps
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