Convert GoPro time lapse photos to GIF. Bonus MP4 output, too.

convert-photos.sh

# I find that the delay is pretty good at 10 if there are a lot of shots. 
# A delay of 5 gives it a more speedy look.
# Finds all jpg files in current folder and creates a file called animated.gif.
# Also resizes images to 800 by 600 size so output gif will be same.
gm convert -size 800x600 *.jpg -delay 5 -resize 800x600 animated.gif

# Create an mp4 version while we are at it
ffmpeg -i animated.gif -c:v libx264 -crf 12 -b:v 500K animated.mp4

# Skip the graphicsmagick stuff and just use ffmpeg to concatenate images into a video
ffmpeg -framerate 1 -r 30 -pattern_type glob -i '*.jpg' -c:v libx264 -vf "scale=1440:1080,fps=25,format=yuv420p" out.mp4

# Add the following using `&&` to each command. Since the above commands can take 
# some time, you can continue to work on something else and recieve a notification
# when the process is complete.
# Used this SE question for reference: http://apple.stackexchange.com/a/115373
osascript -e 'display notification "Process complete!" with title "Conversion" sound name "Glass"'

I have Graphics Magick and ffmpeg installed through Homebrew which makes running these commands super easy.