title: Light Show
media types:
Video
description: An audio visualization filter that colors the image proportional to the magnitude of the audio spectrum.
version: 1
creator:
copyright: Meltytech, LLC
license: LGPLv2.1
title: Low Frequency
description:
The low end of the frequency range to be used to influence the image motion.
type: integer
readonly: no
required: no
default: 20
unit: Hz
title: High Frequency
description:
The high end of the frequency range to be used to influence the image motion.
type: integer
readonly: no
required: no
default: 20000
unit: Hz
title: Level Threshold
description:
The minimum amplitude of sound that must occur within the frequency range to cause the image to move. motion.
type: float
readonly: no
required: no
minimum: -100
maximum: 0
default: -30
unit: dB
title: Oscillation
description:
Oscillation can be useful to make the image move back and forth during long periods of sound. A value of 0 specifies no oscillation.
type: float
readonly: no
required: no
minimum: 0
default: 5
unit: Hz
title: Light Color
description:
The color of the light.
Multiple colors can be specified with incrementing suffixes to cause the
waveform to be drawn in a circular gradient. color.1 is the inside of the
circle. Subsequent colors will produce a gradient toward the outside.
By default, the filter has one color defined:
color.1=0xffffffff"
This results in the image being lightened.
To create a gradient, define more colors:
color.2=green color.3=0x77777777 color.4=0x00000000
A color value is a hexadecimal representation of RGB plus alpha channel
as 0xrrggbbaa. Colors can also be the words: white, black, red, green,
or blue. You can also use a HTML-style color values #rrggbb or #aarrggbb.
type: color
readonly: no
required: no
widget: color
title: Rectangle
description:
Defines the rectangle that the color should be drawn in. Format is: "X Y W H". X, Y, W, H are assumed to be pixel units unless they have the suffix '%'.
type: rect
readonly: no
required: no
animation: yes
default: 0 0 100% 100%
title: Window Size
description:
The number of samples that the FFT will be performed on. If window_size is less than the number of samples in a frame, extra samples will be ignored. If window_size is more than the number of samples in a frame, samples will be buffered from previous frames to fill the window. The buffering is performed as a sliding window so that the most recent samples are always transformed.
type: integer
readonly: no
required: no
default: 2048
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