Drawgrid

Video Single output Transform

Draw a colored grid on the input video.

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

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

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

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
x	string	0	—	set horizontal offset
y	string	0	—	set vertical offset
width	string	0	—	set width of grid cell
height	string	0	—	set height of grid cell
color	string	black	—	set color of the grid
thickness	string	1	—	set grid line thickness
replace	bool	false	—	replace color & alpha

FFmpeg also names these options (use the parameter shown above): w → width, h → height, c → color, t → thickness.

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