Convert and remove the .mov file from all folders in the given directory.
find . -type f -name "*.mov" -exec bash -c 'ffmpeg -i "$0" -vcodec h264 "${0%.*}.mp4" && rm "$0"' "{}" \;
Decrease .mp4 file size.
find . -type f -name "*.mp4" -exec bash -c 'ffmpeg -i "$0" -c:v libx264 -preset slow -crf 22 -an "$0_opt.mp4"' "{}" \;
find -E . -regex '.*\.(jpg|png|jpeg)' -exec bash -c 'convert "$0" -quality 85 -define webp:auto-filter=true -define webp:image-hint=photo -define webp:method=6 -resize 1080x1920 "${0%.*}.webp"' "{}" \;