Bash batch conversion from mp4 to png array, png array to gif, PNG array to gif with transparent background, Gif scale to certain size, PNG array in one directory to Gif, PNG array in one directory and crop, and Loop video x times

bash_batch

// Convert mp4 to png array
for f in *; do echo "Got '${f}'"; cd ${f}; mkdir ~/Desktop/frames/${f}; ffmpeg -i ${f}.mp4 -vf scale=600:-1 -r 29.97 ~/Desktop/frames/${f}/ffout_"${f%.mp4}%03d.png"; cd ..; done

// Convert png array to gif
for D in *; do echo "Got '${D}'"; cd ${D}; convert -dispose none -delay 3 -loop 0 ffout* ~/Desktop/gif/${D}.gif; cd ..; done

// Scale mp4 to png array at certain size
for f in *.mp4; do ffmpeg -i ${f} -vf scale=160:-1 -r 29.97 ~/Desktop/"${f}"; done

// PNG array to gif with transparent background
for D in *; do echo "Got '${D}'"; cd ${D}; mkdir ~/Desktop/gif/${D}; convert -alpha set -dispose previous -delay 4 -loop 0 ${D}* ~/Desktop/gif/${D}/${D}.gif; cd ..; done

// PNG array to gif with transparent background at certain size
for D in *; do echo "Got '${D}'"; cd ${D}; mkdir ~/Desktop/gif/${D}; mkdir ~/Desktop/gif/${D}/600; convert -alpha set -dispose previous -delay 4 -loop 0 -resize 600 ${D}* ~/Desktop/gif/${D}/600/${D}.gif; cd ..; done
for D in *; do echo "Got '${D}'"; cd ${D}; mkdir ~/Desktop/gif/${D}; mkdir ~/Desktop/gif/${D}/480; convert -alpha set -dispose previous -delay 4 -loop 0 -resize 480 ${D}* ~/Desktop/gif/${D}/480/${D}.gif; cd ..; done
for D in *; do echo "Got '${D}'"; cd ${D}; mkdir ~/Desktop/gif/${D}; mkdir ~/Desktop/gif/${D}/300; convert -alpha set -dispose previous -delay 4 -loop 0 -resize 300 ${D}* ~/Desktop/gif/${D}/300/${D}.gif; cd ..; done
for D in *; do echo "Got '${D}'"; cd ${D}; mkdir ~/Desktop/gif/${D}; mkdir ~/Desktop/gif/${D}/160; convert -alpha set -dispose previous -delay 4 -loop 0 -resize 160 ${D}* ~/Desktop/gif/${D}/160/${D}.gif; cd ..; done

// Gif scale to certain size
for D in *; do echo "Got '${D}'"; cd ${D}; mkdir ~/Desktop/gif/${D}; convert -dispose previous -delay 4 -loop 0 -resize 160 ${D}* ~/Desktop/gif/${D}/${D}.gif; cd ..; done

// PNG array in one directory
convert -alpha set -dispose previous -delay 3 -loop 0 -gravity center -extent 600x600 -background transparent -resize 600 filename* ~/Desktop/gif/filename.gif
convert -alpha set -dispose previous -delay 3 -loop 0 -gravity center -extent 480x480 -background transparent -resize 480 filename* ~/Desktop/gif/filename.gif
convert -alpha set -dispose previous -delay 3 -loop 0 -gravity center -extent 300x300 -background transparent -resize 300 filenamel* ~/Desktop/gif/filename.gif
convert -alpha set -dispose previous -delay 3 -loop 0 -gravity center -extent 160x160 -background transparent -resize 160 filename* ~/Desktop/gif/filename.gif

// PNG array in one directory and crop
convert -alpha set -dispose previous -delay 3 -loop 0 -gravity center -crop 600x600+0+0 +repage -background transparent -resize 480 filename* ~/Desktop/gif/filename.gif

// Loop video 2 times
for D in *
do
	cd ${D}
	cd MP4
	cd regular/600
	for i in {1..2}
		do
			printf "file '%s'\n" *.mp4 >> filelist.txt
		done
	ffmpeg -f concat -i filelist.txt -c copy ${D}_loop.mp4
	rm -rf ${D}.mp4
	mv ${D}_loop.mp4 ${D}.mp4
	cd ../../
	cd watermark/600
	for i in {1..2}
		do
			printf "file '%s'\n" *.mp4 >> filelist.txt
		done
	ffmpeg -f concat -i filelist.txt -c copy ${D}_loop.mp4
	rm -rf ${D}.mp4
	mv ${D}_loop.mp4 ${D}.mp4
	cd ../../../../
done

// Loop video 3 times
for D in *
do
	cd ${D}
	cd MP4
	cd regular/600
	for i in {1..3}
		do
			printf "file '%s'\n" *.mp4 >> filelist.txt
		done
	ffmpeg -f concat -i filelist.txt -c copy ${D}_loop.mp4
	rm -rf ${D}.mp4
	mv ${D}_loop.mp4 ${D}.mp4
	cd ../../
	cd watermark/600
	for i in {1..3}
		do
			printf "file '%s'\n" *.mp4 >> filelist.txt
		done
	ffmpeg -f concat -i filelist.txt -c copy ${D}_loop.mp4
	rm -rf ${D}.mp4
	mv ${D}_loop.mp4 ${D}.mp4
	cd ../../../../
done

// Loop video 12 times
for D in *
do
	cd ${D}
	cd MP4
	cd regular/600
	for i in {1..12}
		do
			printf "file '%s'\n" *.mp4 >> filelist.txt
		done
	ffmpeg -f concat -i filelist.txt -c copy ${D}_loop.mp4
	rm -rf ${D}.mp4
	mv ${D}_loop.mp4 ${D}.mp4
	cd ../../
	cd watermark/600
	for i in {1..12}
		do
			printf "file '%s'\n" *.mp4 >> filelist.txt
		done
	ffmpeg -f concat -i filelist.txt -c copy ${D}_loop.mp4
	rm -rf ${D}.mp4
	mv ${D}_loop.mp4 ${D}.mp4
	cd ../../../../
done