Avectorscope

Audio Video Single output Transform

Convert input audio to vectorscope video output.

FFmpeg filter: avectorscope — the official reference.

Add it to a graph. The explicit form works for every filter — bind it to its input and read the result from outputs():

$node   = $video->addFilter(new Avectorscope(…));
$result = $node->outputs()[0];

Shorthand. Single-output filters can skip the node — apply() returns the result stream directly:

$result = $video->apply(new Avectorscope(…));

When to use it

TODO — when this filter shines: what it’s the right tool for, what to reach for instead when it isn’t, and how it composes with neighbouring filters.

How to use it

TODO — prose: how the filter actually works and what its key parameters mean (the explanation FFmpeg’s terse option help omits).

Examples

TODO — runnable PHP, with the equivalent ffmpeg CLI alongside.

Gotchas

TODO

See also

TODO

Parameters

Parameter	Type	Default	Range / values	Description
mode	AvectorscopeMode	lissajous	lissajous, lissajous_xy, polar	set mode
rate	string	25	—	set video rate
size	string	400x400	—	set video size
rc	int	40	0–255	set red contrast
gc	int	160	0–255	set green contrast
bc	int	80	0–255	set blue contrast
ac	int	255	0–255	set alpha contrast
rf	int	15	0–255	set red fade
gf	int	10	0–255	set green fade
bf	int	5	0–255	set blue fade
af	int	5	0–255	set alpha fade
zoom	float	1	0–10	set zoom factor
draw	AvectorscopeDraw	dot	dot, line, aaline	set draw mode
scale	AvectorscopeScale	lin	lin, sqrt, cbrt, log	set amplitude scale mode
swap	bool	true	—	swap x axis with y axis
mirror	AvectorscopeMirror	none	none, x, y, xy	mirror axis

FFmpeg also names these options (use the parameter shown above): m → mode, r → rate, s → size.

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Maps to FFmpeg’s avectorscope filter. Verified against ffmpeg n7.1.1.