Loop through all in srcframes and run primitive over it, details in script.

primitive-worker.sh

# Loop through all in srcframes and run primitive over it
# Primitive: https://github.com/fogleman/primitive
# 
# Dependencies: primitive, ffmpeg, and inkscape in path
# 
# This supports job resumption with 'resume' and will keep track
# of frames which have been done.
# 
# To clear for another set of srcframes, remove contents of
# vecframes and rastframes

# Image extraction for populating srcframes with 
# ./ffmpeg -i Berserk22.mkv -vf "select='eq(pict_type,PICT_TYPE_I)'" -vsync vfr srcframes/frame%0d.png
# 
# This gets us i-frames which are great for sampling interesting portions
# of the video.
# 
# Alternatively, dump every frame of a 24fps.
# Running this through primitive will take a month.
# ./ffmpeg -i Berserk22.mkv -r 24/1 srcframes/frame_%0d.png

# MIT licensed

# Allow resumption but default to not overriding existing jobs
# 
# Resumption typically involves deleting the completed srcframes
resume="$1"
if [[ $resume != "resume" ]]; then
	if [ "$(ls -A rastframes)" ]; then
		echo "rastframes not empty, use 'resume' to ignore"
		exit 1
	fi

	if [ "$(ls -A vecframes)" ]; then
		echo "vecframes not empty, use 'resume' to ignore"
		exit 1
	fi
fi

# Keep track of files we've completed
log="rastframes/completed.txt"
touch $log

# Primitive settings
primitiveN=6000

for file in srcframes/*.png; do
	# Grab base and annotate N
	base=$(basename $file)$primitiveN
	vector="vecframes/${base%.*}.svg"
	raster="rastframes/${base%.*}.png"

	# Check to ensure file is not already completed
	if grep -Fxq "$base" $log; then
		echo "$base done, skipping"
		continue
	fi

	# Extract dimensions of form 'width x height' using file and grep
	# Something something regex something two problems :)
	dimensions=$(file --brief $file | grep -Eo [0-9]*[[:space:]]x[[:space:]][0-9]*)
	# Isolate dimensions and use xargs to trim whitespace
	# This is dangerous for anything but single strings w/o whitespace :|
	width=$(echo $dimensions | grep -Eo [0-9]*[[:space:]] | xargs echo -n)
	height=$(echo $dimensions | grep -Eo [[:space:]][0-9]* | xargs echo -n)

	echo "primitive $base"

	# Vectorize with primitive
	GOMAXPROCS=1 primitive -i $file -o $vector -n $primitiveN

	echo "inkscape $base rendering $width x $height"	

	# Convert vector to raster
	./inkscape/inkscape -z $vector --export-png=$raster \
		--export-width=$width --export-height=$height

	# Mark this file as completed
	echo $base >> $log
done

Very cool script. Nicely done. It was close to something else I was thinking of.

I'm wonder if someone could make a script that takes a video, takes each frame, and does the static animation in the main repo to each one, then reconstructs the video into a new sketch-like animation.

I'm really appreciating how well commented this is!