406cc7c0c7
Add S-expression based video effects pipeline with modular effect definitions, constructs, and recipe files. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
21 lines
698 B
Common Lisp
21 lines
698 B
Common Lisp
;; Strobe effect - flashing/blinking
|
|
;; Usage: python3 plan.py effects/strobe.sexp -p frequency=4 | python3 execute.py - -d . -o output.mp4
|
|
;;
|
|
;; Parameters:
|
|
;; frequency: flashes per second (1 to 15, default: 4)
|
|
;; WARNING: high values may cause discomfort
|
|
|
|
(recipe "strobe"
|
|
:version "1.0"
|
|
:encoding (:codec "libx264" :crf 20 :preset "medium" :audio-codec "aac" :fps 30)
|
|
|
|
(effect strobe :path "sexp_effects/effects/strobe.sexp")
|
|
|
|
;; Default parameter (overridden by -p frequency=N)
|
|
(def frequency 4)
|
|
|
|
(def video (source :path "monday.webm"))
|
|
(def clip (-> video (segment :start 0 :duration 10)))
|
|
(def result (-> clip (effect strobe :frequency frequency)))
|
|
result)
|