webp

Create

img2webp -d 300 -lossy -m 6 -min_size -o animated.webp *.jpg

Create from mp4

ffmpeg -i input.mp4 -vcodec libwebp -filter:v "scale=720:-4,setpts=PTS/15,fps=fps=6" -lossless 0 -compression_level 5 -q:v 50 -preset default -an output.webp