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>
34 lines
1.1 KiB
Common Lisp
34 lines
1.1 KiB
Common Lisp
;; ASCII zones effect - region-based ASCII rendering
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;; Usage: python3 plan.py effects/ascii_zones.sexp -p char_size=10 | python3 execute.py - -d . -o output.mp4
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;;
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;; Parameters:
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;; char_size: character cell size in pixels (4 to 20, default: 10)
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(recipe "ascii_zones"
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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 ascii_zones :path "sexp_effects/effects/ascii_zones.sexp")
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(analyzer energy :path "../artdag-analyzers/energy/analyzer.py")
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;; Default parameter (overridden by -p char_size=N)
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(def char_size 10)
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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 audio (source :path "dizzy.mp3"))
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(def audio-clip (-> audio (segment :start 60 :duration 10)))
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;; Analyze just the audio clip - times are 0-10s relative to clip
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(def energy-data (-> audio-clip (analyze energy)))
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;; char_size bound to energy - no offset needed since analysis is on clip
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(def result (-> clip
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(effect ascii_zones
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:char_size (bind energy-data values :range [2 32]))))
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(mux result audio-clip))
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