Filter: avfilter.loudnorm

Plugin Information

title: loudnorm
media types: Audio
description: EBU R128 loudness normalization
version: Lavfi9.12.100
creator: libavfilter maintainers

Notes

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.

Parameters

av.I

description: set integrated loudness target
type: float
readonly: no
required: no
minimum: -70
maximum: -5
default: -24
format: double

av.i

description: set integrated loudness target
type: float
readonly: no
required: no
minimum: -70
maximum: -5
default: -24
format: double

av.LRA

description: set loudness range target
type: float
readonly: no
required: no
minimum: 1
maximum: 50
default: 7
format: double

av.lra

description: set loudness range target
type: float
readonly: no
required: no
minimum: 1
maximum: 50
default: 7
format: double

av.TP

description: set maximum true peak
type: float
readonly: no
required: no
minimum: -9
maximum: 0
default: -2
format: double

av.tp

description: set maximum true peak
type: float
readonly: no
required: no
minimum: -9
maximum: 0
default: -2
format: double

av.measured_I

description: measured IL of input file
type: float
readonly: no
required: no
minimum: -99
maximum: 0
default: 0
format: double

av.measured_i

description: measured IL of input file
type: float
readonly: no
required: no
minimum: -99
maximum: 0
default: 0
format: double

av.measured_LRA

description: measured LRA of input file
type: float
readonly: no
required: no
minimum: 0
maximum: 99
default: 0
format: double

av.measured_lra

description: measured LRA of input file
type: float
readonly: no
required: no
minimum: 0
maximum: 99
default: 0
format: double

av.measured_TP

description: measured true peak of input file
type: float
readonly: no
required: no
minimum: -99
maximum: 99
default: 99
format: double

av.measured_tp

description: measured true peak of input file
type: float
readonly: no
required: no
minimum: -99
maximum: 99
default: 99
format: double

av.measured_thresh

description: measured threshold of input file
type: float
readonly: no
required: no
minimum: -99
maximum: 0
default: -70
format: double

av.offset

description: set offset gain
type: float
readonly: no
required: no
minimum: -99
maximum: 99
default: 0
format: double

av.linear

description: normalize linearly if possible
type: string
readonly: no
required: no

av.dual_mono

description: treat mono input as dual-mono
type: string
readonly: no
required: no

av.print_format

description: set print format for stats
type: string
readonly: no
required: no
format: integer or keyword
values:

  • none
  • json
  • summary

position

description: The MLT position value to set on avfilter frames
type: string
readonly: no
required: no
default: frame
values:

  • frame
  • filter
  • source
  • producer

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