Script: Convert all webp to jpg if static or gif/mp4 if animated
Script: Convert all webp to jpg if static or gif/mp4 if animated
This will convert all webp in a directory to jpg or mp4 if animated. It will utilize all cores with gnu parallel. It will also handle an error with ffmpeg that happens if animated webp pixel width or height is an odd number by padding 1 pixel if necessary
cat convertwebp
#!/usr/bin/env bash
# Convert webp to jpg if static or gif/mp4 if animated
# Pads animated webp to avoid "libx264 not divisible by 2 error"
# Deps imagemagick libwebp parallel
# Usage assuming saved as convertwebp
# convertwebp # Will convert all webp in current dir to jpeg or mp4 and gif if animated
# convertwebp /some/dir/ # Same but on specified dir
# convertwebp /some/file # Same but on specified file
######### Set jpg quality. There will be 2 outputs one of each quality setting
# 0-100 percent
export QUALITY_ONE=35
export QUALITY_TWO=75
find_args=(-maxdepth 1 -type f -regextype posix-extended -iregex '.*\.(webp)$' -print0)
dir="$PWD"
if [[ -d "$@" ]]; then
dir="$@"
echo "Dir $@"
else
if [[ -f "$@" ]]; then
dir="$@"
echo "File $@"
fi
fi
mkdir -p "$MY_DWEBP_OUTDIR"
find "$dir" "${find_args[@]}" | parallel -0 -j+0 --eta --bar '
jpg_out_quality_one=$(echo {/.}_"$QUALITY_ONE"_percent.jpg)
jpg_out_quality_two=$(echo {/.}_"$QUALITY_TWO"_percent.jpg)
png_out=$(echo {/.}.ffmpeg.png)
gif_out=$(echo {/.}.gif)
mp4_out=$(echo {/.}.mp4)
isanimated="$(webpmux -info {} | grep animation)"
if [[ "$isanimated" == "Features present: animation transparency" ]]; then
convert '{}' "$gif_out"
# Begin mp4 conversion handler to pad geometry 1 pixel to x and y if either are odd to avoid "libx264 not divisible by 2 error"
geometry_x=$(webpmux -info '{}' | head -n 1 | tr "[:space:]" "\n" | tail -3 | head -n 1)
geometry_y=$(webpmux -info '{}' | head -n 1 | tr "[:space:]" "\n" | tail -3 | tail -1)
if [ $(( $geometry_x % 2)) -ne 0 ] | [ $(( $geometry_y % 2)) -ne 0 ]; then
if [ $(( $geometry_x % 2)) -ne 0 ] && [ $(( $geometry_y % 2)) -ne 0 ]; then
splice_geometry="1x1"
gravity_direction="northeast"
convert -splice $splice_geometry -gravity $gravity_direction '{}' "$mp4_out"
else
if [ $(( $geometry_x % 2)) -ne 0 ]; then
splice_geometry="1x0"
gravity_direction="east"
convert -splice $splice_geometry -gravity $gravity_direction '{}' "$mp4_out"
else
if [ $(( $geometry_y % 2)) -ne 0 ]; then
splice_geometry="0x1"
gravity_direction="north"
convert -splice $splice_geometry -gravity $gravity_direction '{}' "$mp4_out"
fi
fi
fi
else
convert '{}' "$mp4_out"
fi
# End mp4 conversion handler to pad geometry 1 pixel to x and y if either are odd to avoid "libx264 not divisible by 2 error"
else
dwebp '{}' -o - | convert - -quality $QUALITY_ONE% "$jpg_out_quality_one" # pipe to convert for filesize reduction
dwebp '{}' -o - | convert - -quality $QUALITY_TWO% "$jpg_out_quality_two" # pipe to convert for filesize reduction
fi
'
unset QUALITY_ONE
unset QUALITY_TWO
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