;; Color adjust effect - combined brightness and contrast
;; Usage: python3 plan.py effects/color-adjust.sexp -p brightness=20 -p contrast=1.2 | python3 execute.py - -d . -o output.mp4
;;
;; Parameters:
;;   brightness: brightness adjustment (-255 to 255, default: 20)
;;   contrast: contrast multiplier (0.0 to 3.0, default: 1.2)

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

  (effect color-adjust :path "sexp_effects/effects/color-adjust.sexp")

  ;; Default parameters (overridden by -p brightness=N -p contrast=N)
  (def brightness 20)
  (def contrast 1.2)

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