A3dscope

Audio Video Single output Transform

Convert input audio to 3d scope video output.

FFmpeg filter: a3dscope — 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 A3dscope(…));
$result = $node->outputs()[0];

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

$result = $video->apply(new A3dscope(…));

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
rate	string	25	—	set video rate
size	string	hd720	—	set video size
fov	float	90	40–150	set camera FoV
roll	float	0	-180–180	set camera roll
pitch	float	0	-180–180	set camera pitch
yaw	float	0	-180–180	set camera yaw
xzoom	float	1	0.01–10	set camera zoom
yzoom	float	1	0.01–10	set camera zoom
zzoom	float	1	0.01–10	set camera zoom
xpos	float	0	-60–60	set camera position
ypos	float	0	-60–60	set camera position
zpos	float	0	-60–60	set camera position
length	int	15	1–60	set length

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

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Maps to FFmpeg’s a3dscope filter. Verified against ffmpeg n7.1.1.