#!/bin/bash # 480x360 base resolution # 42x32 is close enough # 40x32 is nicer to work with because divisible by 8 rm frames/*.png ffmpeg -i *.webm \ -r $1 \ -ss 1 \ -vf scale=40:32 \ -sws_dither none \ frames/frame_%04d.png 2> /dev/null # -pix_fmt monob \ echo converted with $1 fps echo $(ls -L1 frames | wc -l) frames