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
701 B
Common Lisp
21 lines
701 B
Common Lisp
;; Threshold effect - convert to pure black and white
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;; Usage: python3 plan.py effects/threshold.sexp -p level=128 | python3 execute.py - -d . -o output.mp4
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;;
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;; Parameters:
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;; level: threshold cutoff (0 to 255, default: 128)
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;; pixels below = black, above = white
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(recipe "threshold"
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:version "1.0"
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:encoding (:codec "libx264" :crf 20 :preset "medium" :audio-codec "aac" :fps 30)
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(effect threshold :path "sexp_effects/effects/threshold.sexp")
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;; Default parameter (overridden by -p level=N)
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(def level 128)
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(def video (source :path "monday.webm"))
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(def clip (-> video (segment :start 0 :duration 10)))
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(def result (-> clip (effect threshold :level level)))
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result)
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