FFmpeg converts all PNGs in a directory into an animated GIF by:

ffmpeg -pattern_type glob -i '*.png' out.gif

-pattern_type glob -i '*.png'

collect all .png files in this directory

Windows FFmpeg file globbing

FFmpeg file globbing does NOT work on Windows, even with FFMPEG 4.x. The error on Windows is like:

Pattern type ‘glob’ was selected but globbing is not supported by this libavformat build

Windows FFmpeg users, consider using Windows Subsystem for Linux for file globbing with FFmpeg.