Filter: volume

Plugin Information

title: Volume
media types: Audio
description: Adjust an audio stream's volume level. This filter is based on the 'normalize' utility
version: 2
creator: Dan Denneedy
copyright: Meltytech, LLC
license: GPLv2

Parameters

gain (DEPRECATED)

title: Gain
description:

This parameter is deprecated; use "level" instead. The gain may be indicated as a floating point value of the gain adjustment.
The gain may also be indicated as a numeric value with the suffix "dB" to adjust in terms of decibels.
The gain may also be set to "normalize" to normalize the volume to the target amplitude -12dBFS.
This value is discarded if value for property "level" is set.

type: string
readonly: no
required: no

window

title: Window
description: The number of video frames over which to smooth normalization.
type: integer
readonly: no
required: no
default: 75

normalize

title: Normalize
description:

Normalize the volume to the specified amplitude.
The normalization may be indicated as a floating point value of the relative volume.
The normalization may also be indicated as a numeric value with the suffix "dB" to set the amplitude in decibels.

type: string
readonly: no
required: no
default: -12dBFS

normalise

title: Normalise (DEPRECATED)
description: Deprecated. See normalize
type:
readonly: no
required: no

limiter

title: Limiter
description:

Limit all samples above the specified amplitude.
The limiting may be indicated as a floating point value of the relative volume.
The limiting may also be indicated as a numeric value with the suffix "dB" to set the limiting amplitude in decibels.

type: string
readonly: no
required: no
default: -6dBFS

max_gain

title: Max gain
description: A floating point or decibel value of the maximum gain that can be applied during normalization.
type: string
readonly: no
required: no
default: 20dB

end (DEPRECATED)

title: End gain
description:

A gain value just like the Gain property. This causes the gain to be interpolated from 'gain' to 'end' over the duration.
This value is discarded if value for property "level" is set.

type: string
readonly: no
required: no

max_gain

title: Max gain
description: A floating point or decibel value of the maximum gain that can be applied during normalization.
type: string
readonly: no
required: no
default: 20dB

level

title: Level
description: The animated value of the gain adjustment in dB. Properties "gain" and "end" are ignored if this is set.
type: float
readonly: no
required: no
animation: yes
unit: dB

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