# 4*0.875 = 3.5 pixel aspect ratio
# 320x180 -> 80x157.5
# instead scale to 82x160 and crop to 80x160 :D
# note: letterboxing makes it harder to reuse those blocks
ffmpeg \
  -i 'https://upload.wikimedia.org/wikipedia/commons/a/ab/Caminandes_3_-_Llamigos_-_Blender_Animated_Short.webm' \
  -vf 'format=yuv444p,scale=82:160,crop=w=80:x=1,setsar=1' \
  -an \
  -vcodec libvpx-vp9 \
  -row-mt 1 \
  -crf 20 \
  -y llamigos.webm