title: blackdetect
media types:
Video
description: Detect video intervals that are (almost) black.
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 minimum detected black duration in seconds
type: float
readonly: no
required: no
minimum: 0
default: 2
format: double
description:
set minimum detected black duration in seconds
type: float
readonly: no
required: no
minimum: 0
default: 2
format: double
description:
set the picture black ratio threshold
type: float
readonly: no
required: no
minimum: 0
maximum: 1
default: 0.98
format: double
description:
set the picture black ratio threshold
type: float
readonly: no
required: no
minimum: 0
maximum: 1
default: 0.98
format: double
description:
set the pixel black threshold
type: float
readonly: no
required: no
minimum: 0
maximum: 1
default: 0.1
format: double
description:
set the pixel black threshold
type: float
readonly: no
required: no
minimum: 0
maximum: 1
default: 0.1
format: double
description:
Maximum number of threads
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
The MLT position value to set on avfilter frames
type: string
readonly: no
required: no
default: frame
values:
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