@echo off
set PATH=%PATH%;"E:\Static Programs\ffmpeg-20190416-e2f766e-win64-static\bin\"
cd frames
ffmpeg -start_number 0 -i %%04d.png -vf palettegen=reserve_transparent=1 palette.png
ffmpeg -framerate 50 -start_number 0 -i %%04d.jpeg -i palette.png -lavfi paletteuse=alpha_threshold=128 -gifflags -offsetting -r 50 -y .out.gif
PAUSE