Filter: avfilter.eq

Plugin Information

title: eq
media types: Video
description: Adjust brightness, contrast, gamma, and saturation.
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.contrast

description: set the contrast adjustment, negative values give a negative image
type: string
readonly: no
required: no
default: ‘1.0’

av.brightness

description: set the brightness adjustment
type: string
readonly: no
required: no
default: ‘0.0’

av.saturation

description: set the saturation adjustment
type: string
readonly: no
required: no
default: ‘1.0’

av.gamma

description: set the initial gamma value
type: string
readonly: no
required: no
default: ‘1.0’

av.gamma_r

description: gamma value for red
type: string
readonly: no
required: no
default: ‘1.0’

av.gamma_g

description: gamma value for green
type: string
readonly: no
required: no
default: ‘1.0’

av.gamma_b

description: gamma value for blue
type: string
readonly: no
required: no
default: ‘1.0’

av.gamma_weight

description: set the gamma weight which reduces the effect of gamma on bright areas
type: string
readonly: no
required: no
default: ‘1.0’

av.eval

description: specify when to evaluate expressions
type: string
readonly: no
required: no
format: integer or keyword
values:

  • init
  • frame

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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