;; Grayscale effect - converts to black and white
;; Usage: python3 plan.py effects/grayscale.sexp | python3 execute.py - -d . -o output.mp4
;; No parameters

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

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

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