Fspp

Video Single output Transform

Apply Fast Simple Post-processing filter.

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

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

$result = $video->apply(new Fspp(…));

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
quality	int	4	4–5	set quality
qp	int	0	0–64	force a constant quantizer parameter
strength	int	0	-15–32	set filter strength
use_bframe_qp	bool	false	—	use B-frames’ QP

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