SECONDS = 10
OUTPUT = "/tmp/movie.mov"
BASEDIR = File.dirname(File.realpath(__FILE__))

trap(:ALRM) {
    fork do
        system "#{BASEDIR}/ffmpeg", '-y', '-i', "/tmp/img_%d.jpg", OUTPUT
        system "/usr/bin/open", OUTPUT
    end
}

i = 0
while true do
    system "/usr/sbin/screencapture", '-t', 'jpg', "/tmp/img_#{i}.jpg"
    i = i + 1
    sleep 1
end