title: perspective
media types:
Video
description: Correct the perspective of video.
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 top left x coordinate
type: string
readonly: no
required: no
default: ‘0’
description:
set top left y coordinate
type: string
readonly: no
required: no
default: ‘0’
description:
set top right x coordinate
type: string
readonly: no
required: no
default: ‘W’
description:
set top right y coordinate
type: string
readonly: no
required: no
default: ‘0’
description:
set bottom left x coordinate
type: string
readonly: no
required: no
default: ‘0’
description:
set bottom left y coordinate
type: string
readonly: no
required: no
default: ‘H’
description:
set bottom right x coordinate
type: string
readonly: no
required: no
default: ‘W’
description:
set bottom right y coordinate
type: string
readonly: no
required: no
default: ‘H’
description:
set interpolation
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
specify the sense of the coordinates
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
specify when to evaluate expressions
type: string
readonly: no
required: no
format: integer or keyword
values:
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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