Filter: avfilter.afade

Plugin Information

title: afade
media types: Audio
description: Fade in/out input audio.
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.type

description: set the fade direction
type: string
readonly: no
required: no
format: integer or keyword
values:

  • in
  • out

av.t

description: set the fade direction
type: string
readonly: no
required: no
format: integer or keyword
values:

  • in
  • out

av.start_sample

description: set number of first sample to start fading
type: integer
readonly: no
required: no
minimum: 0
default: 0
format: 64-bit

av.ss

description: set number of first sample to start fading
type: integer
readonly: no
required: no
minimum: 0
default: 0
format: 64-bit

av.nb_samples

description: set number of samples for fade duration
type: integer
readonly: no
required: no
minimum: 1
default: 44100
format: 64-bit

av.ns

description: set number of samples for fade duration
type: integer
readonly: no
required: no
minimum: 1
default: 44100
format: 64-bit

av.start_time

description: set time to start fading
type: string
readonly: no
required: no

av.st

description: set time to start fading
type: string
readonly: no
required: no

av.duration

description: set fade duration
type: string
readonly: no
required: no

av.d

description: set fade duration
type: string
readonly: no
required: no

av.curve

description: set fade curve type
type: string
readonly: no
required: no
format: integer or keyword
values:

  • nofade
  • tri
  • qsin
  • esin
  • hsin
  • log
  • ipar
  • qua
  • cub
  • squ
  • cbr
  • par
  • exp
  • iqsin
  • ihsin
  • dese
  • desi
  • losi
  • sinc
  • isinc
  • quat
  • quatr
  • qsin2
  • hsin2

av.c

description: set fade curve type
type: string
readonly: no
required: no
format: integer or keyword
values:

  • nofade
  • tri
  • qsin
  • esin
  • hsin
  • log
  • ipar
  • qua
  • cub
  • squ
  • cbr
  • par
  • exp
  • iqsin
  • ihsin
  • dese
  • desi
  • losi
  • sinc
  • isinc
  • quat
  • quatr
  • qsin2
  • hsin2

av.silence

description: set the silence gain
type: float
readonly: no
required: no
minimum: 0
maximum: 1
default: 0
format: double

av.unity

description: set the unity gain
type: float
readonly: no
required: no
minimum: 0
maximum: 1
default: 1
format: double

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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