Script to take a few screenshots of your Mac desktop and make a movie.

timelapse.rb

folder = "/Users/alcides/Desktop/timelapse"

puts "recording..."
 
1.upto 60 do
  `screencapture -xC #{folder}/#{Time.now.strftime("%I-%M-%S")}.tiff`
  sleep 30
end

puts "converting..." 
 
`ls #{folder}`.split("\n").each do |i|
  f = [folder,i].join("/")
  n = f.sub "tiff","png"
  `convert #{f} -resize 25% #{n}`
end 

puts "removing originals"
`rm #{folder}/*.tiff`

`mencoder -ovc lavc -mf type=png:fps=30 -o movie.avi mf://#{folder}/*.png`