MotionJPEG to MP4

mjpeg.rb

# ruby mjpeg.rb &
# ffmpeg -f mjpeg -r 30 -i tcp://127.0.0.1:8888 \
#        -c:v libx264 -profile:v baseline -pix_fmt yuv420p -y output.mp4
require 'socket'

image = File.open('image.jpg', 'rb'){|fd| fd.read}
server = TCPServer.new("127.0.0.1", 8888)
sock = server.accept
(30*600).times do
  sock.write image
end
sock.close
server.close