title: ametadata
media types:
Audio
description: Manipulate audio frame metadata.
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 a mode of operation
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set metadata key
type: string
readonly: no
required: no
description:
set metadata value
type: string
readonly: no
required: no
description:
function for comparing values
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set expression for expr function
type: string
readonly: no
required: no
description:
set file where to print metadata information
type: string
readonly: no
required: no
description:
reduce buffering when printing to user-set file or pipe
type: string
readonly: no
required: no
description:
The MLT position value to set on avfilter frames
type: string
readonly: no
required: no
default: frame
values:
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