Nicky's personal website

Extract album covers from .m4a files

for f in *.m4a; do ffmpeg -i "$f" -map 0:1 "${f%.m4a}.png"; done

Crop images to 1:1

for f in *.png; do ffmpeg -i "$f" -vf "crop=ih:ih:(iw - ih)/2:0" "${f%.png}cropped.png"; done

Crop tall videos to 1:1

ffmpeg -i in.webm -vf "crop=iw:iw:0:(ih - iw)/2" out.mp4