genart video

Render an animated .genart sketch to video. Captures frames over a specified duration and encodes them to MP4, WebM, or GIF.

Usage

genart video <file> [options]

Argument	Required	Description
`<file>`	Yes	Path to a `.genart` sketch file

Flag	Type	Default	Description
`--duration`	`number`	required	Video duration in seconds
`--fps`	`number`	`30`	Frames per second
`--format`	`mp4 \| webm \| gif`	`mp4`	Output video format
`--codec`	`h264 \| h265 \| vp9`		Video codec (format-dependent)
`--quality`	`0-100`	`75`	Encoding quality
`--animate`	`string`		Animate a parameter over time (repeatable, e.g. `speed=0:10`)
`--easing`	`string`	`linear`	Easing function: `linear`, `ease-in`, `ease-out`, `ease-in-out`
`--loop`	`number`	`0`	Number of loops (0 = no loop, GIF only)
`--concurrency`	`number`	`4`	Number of parallel frame renders
`--wait`	`string`	`500ms`	Time to wait before each frame capture
`--seed`	`number`		Seed value
`--params`	`JSON`		Base parameter overrides
`--colors`	`JSON`		Color palette override
`--width`	`number`		Canvas width
`--height`	`number`		Canvas height
`--preset`	`string`		Canvas size preset
`--scale`	`number`	`1`	Device pixel ratio
`-o, --output`	`path`		Output file path

Render a 10-second MP4:

genart video my-sketch.genart --duration 10

Render a high-quality 4K video:

genart video my-sketch.genart \
  --duration 30 \
  --width 3840 --height 2160 \
  --codec h265 --quality 95 \
  -o output-4k.mp4

Animate a parameter over time with easing:

genart video my-sketch.genart \
  --duration 5 \
  --animate "density=0:1" \
  --easing ease-in-out

Animate multiple parameters simultaneously:

genart video my-sketch.genart \
  --duration 10 \
  --animate "density=0:1" \
  --animate "speed=1:5"

Create a looping GIF:

genart video my-sketch.genart \
  --duration 3 \
  --format gif \
  --loop 0 \
  --width 400 --height 400 \
  -o animation.gif

Render at 60fps with parallel frame capture:

genart video my-sketch.genart \
  --duration 15 \
  --fps 60 \
  --concurrency 8