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56 lines (48 loc) · 1.79 KB
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#lang racket
(require video/private/video
(only-in video/private/ffmpeg-pipeline
render
mk-filter
mk-filter-node
mk-sink-node
stream-bundle->file)
graph)
(current-render-graph (weighted-graph/directed '()))
(define file
;(make-file #:path "/Users/leif/demo2.mp4")
(make-playlist
#:elements (list
(make-file #:path "/Users/leif/demo2.mp4")
(make-file #:path "/Users/leif/demo.mp4"))))
(define source-node
(convert file))
(define filter-node-a
(mk-filter-node
(hash 'video (mk-filter "pad"
(hash "width" 1920
"height" 1080))
'audio (mk-filter "anull"))
#:counts (hash 'video 1 'audio 1)))
(add-vertex! (current-render-graph) filter-node-a)
(add-directed-edge! (current-render-graph) source-node filter-node-a)
(define filter-node-b
(mk-filter-node
(hash 'video (mk-filter "fps"
(hash "fps" 25)))
#:counts (hash 'video 1 'audio 1)))
(add-vertex! (current-render-graph) filter-node-b)
(add-directed-edge! (current-render-graph) filter-node-a filter-node-b)
(define filter-node-c
(mk-filter-node
(hash 'video (mk-filter "format"
(hash "pix_fmts"
"yuv420p")))
#:counts (hash 'video 1 'audio 1)))
(add-vertex! (current-render-graph) filter-node-c)
(add-directed-edge! (current-render-graph) filter-node-b filter-node-c)
(define sink-node
(mk-sink-node (stream-bundle->file "/Users/leif/test.mp4" 'vid+aud)
#:counts (hash 'video 1 'audio 1)))
(add-vertex! (current-render-graph) sink-node)
(add-directed-edge! (current-render-graph) filter-node-c sink-node)
(render (current-render-graph))