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Initial commit: video effects processing system

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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>
This commit is contained in:
gilesb
2026-01-19 12:34:45 +00:00
commit 406cc7c0c7
171 changed files with 13406 additions and 0 deletions
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17
sexp_effects/effects/film_grain.sexp Normal file
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;; Film Grain effect - adds film grain texture
;; @param intensity float [0, 1] default 0.2
;; @param colored bool default false
(define-effect film_grain
((intensity 0.2) (colored false))
(let ((grain-amount (* intensity 50)))
(map-pixels frame
(lambda (x y c)
(if colored
(rgb (clamp (+ (red c) (gaussian 0 grain-amount)) 0 255)
(clamp (+ (green c) (gaussian 0 grain-amount)) 0 255)
(clamp (+ (blue c) (gaussian 0 grain-amount)) 0 255))
(let ((n (gaussian 0 grain-amount)))
(rgb (clamp (+ (red c) n) 0 255)
(clamp (+ (green c) n) 0 255)
(clamp (+ (blue c) n) 0 255))))))))