ok, aparentemente o FFMPEG suporta a globalização de nomes, a partir de ffmpeg.org/wik
ffmpeg also supports bash-style globbing (* represents any number of any characters). This is useful if your images are sequential but not necessarily in a numerically sequential order as in the previous examples.
ffmpeg -framerate 1 -pattern_type glob -i '*.jpg' -c:v libx264 out.mp4