;; Saturation effect - adjust color saturation
;; Usage: python3 plan.py effects/saturation.sexp -p amount=2.0 | python3 execute.py - -d . -o output.mp4
;;
;; Parameters:
;;   amount: saturation multiplier (0.0 to 3.0, default: 2.0)
;;           0 = grayscale, 1 = normal, >1 = vivid colors

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

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

  ;; Default parameter (overridden by -p amount=N)
  (def amount 2.0)

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