ffmpeg \
  -i 'https://upload.wikimedia.org/wikipedia/commons/a/ab/Caminandes_3_-_Llamigos_-_Blender_Animated_Short.webm' \
  -vf 'format=yuv444p,scale=80:150,pad=h=160:y=5,setsar=1' \
  -an \
  -vcodec libvpx-vp9 \
  -row-mt 1 \
  -crf 20 \
  -y llamigos.webm