Codecview

Video Single output Transform

Visualize information about some codecs.

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

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

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

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
mv	int|string	0	—	set motion vectors to visualize
qp	bool	false	—
mv_type	int|string	0	—	set motion vectors type
frame_type	int|string	0	—	set frame types to visualize motion vectors of
block	bool	false	—	set block partitioning structure to visualize

FFmpeg also names these options (use the parameter shown above): mvt → mv_type, ft → frame_type.

---

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