Make a sprite from photos
magick.exe *.jpg +append sprites_P0100.jpg
Resize all images in place
magick.exe mogrify -resize 380 *.jpg
Crop images in place
magick.exe mogrify -crop 3200x3200+400+400 *.jpg
Make and scale video from images
ffmpeg -i DSC_%04d.jpg -c:v libx264 -vf fps=25 scale=800:800 alpin_400.mp4