Dedot

Video Single output Transform

Reduce cross-luminance and cross-color.

FFmpeg filter: dedot — 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 Dedot(…));
$result = $node->outputs()[0];

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

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

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
m	int|string	3	—	set filtering mode
lt	float	0.079	0–1	set spatial luma threshold
tl	float	0.079	0–1	set tolerance for temporal luma
tc	float	0.058	0–1	set tolerance for chroma temporal variation
ct	float	0.019	0–1	set temporal chroma threshold

---

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