title: surround
media types:
Audio
description: Apply audio surround upmix filter.
version: Lavfi7.16.100
creator: libavfilter maintainers
description:
set output channel layout
type: string
readonly: no
required: no
default: ‘5.1’
description:
set input channel layout
type: string
readonly: no
required: no
default: ‘stereo’
description:
set input level
type: float
readonly: no
required: no
minimum: 0
maximum: 10
default: 1
description:
set output level
type: float
readonly: no
required: no
minimum: 0
maximum: 10
default: 1
description:
output LFE
type: string
readonly: no
required: no
description:
LFE low cut off
type: integer
readonly: no
required: no
minimum: 0
maximum: 256
default: 0
description:
LFE high cut off
type: integer
readonly: no
required: no
minimum: 0
maximum: 512
default: 0
description:
set front center channel input level
type: float
readonly: no
required: no
minimum: 0
maximum: 10
default: 1
description:
set front center channel output level
type: float
readonly: no
required: no
minimum: 0
maximum: 10
default: 1
description:
set lfe channel input level
type: float
readonly: no
required: no
minimum: 0
maximum: 10
default: 1
description:
set lfe channel output level
type: float
readonly: no
required: no
minimum: 0
maximum: 10
default: 1
description:
Maximum number of threads
type: integer
readonly: no
required: no
minimum: 0
default: 0
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