;; Mirror effect - reflect image
;; Usage: python3 plan.py effects/mirror.sexp -p direction=horizontal | python3 execute.py - -d . -o output.mp4
;;
;; Parameters:
;;   direction: mirror axis ("horizontal" or "vertical", default: "horizontal")

(recipe "mirror"
  :version "1.0"
  :encoding (:codec "libx264" :crf 20 :preset "medium" :audio-codec "aac" :fps 30)

  (effect mirror :path "sexp_effects/effects/mirror.sexp")

  ;; Default parameter (overridden by -p direction=horizontal|vertical)
  (def direction "horizontal")

  (def video (source :path "monday.webm"))
  (def clip (-> video (segment :start 0 :duration 10)))
  (def result (-> clip (effect mirror :direction direction)))
  result)