title: acompressor
media types:
Audio
description: Audio compressor.
version: Lavfi9.12.100
creator: libavfilter maintainers
Many parameters support animated values (keyframes) but only the numeric ones. Many numeric properties have type string because they accept an expression (see FFmpeg documentation) even though they evaluate to a numeric value.
description:
set input gain
type: float
readonly: no
required: no
minimum: 0.015625
maximum: 64
default: 1
format: double
description:
set mode
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set threshold
type: float
readonly: no
required: no
minimum: 0.000976563
maximum: 1
default: 0.125
format: double
description:
set ratio
type: float
readonly: no
required: no
minimum: 1
maximum: 20
default: 2
format: double
description:
set attack
type: float
readonly: no
required: no
minimum: 0.01
maximum: 2000
default: 20
format: double
description:
set release
type: float
readonly: no
required: no
minimum: 0.01
maximum: 9000
default: 250
format: double
description:
set make up gain
type: float
readonly: no
required: no
minimum: 1
maximum: 64
default: 1
format: double
description:
set knee
type: float
readonly: no
required: no
minimum: 1
maximum: 8
default: 2.82843
format: double
description:
set link type
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set detection
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set sidechain gain
type: float
readonly: no
required: no
minimum: 0.015625
maximum: 64
default: 1
format: double
description:
set mix
type: float
readonly: no
required: no
minimum: 0
maximum: 1
default: 1
format: double
description:
The MLT position value to set on avfilter frames
type: string
readonly: no
required: no
default: frame
values:
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