/usr/share/mlt/normalize/filter_audiolevel.yml is in libmlt-data 0.9.2-2.
This file is owned by root:root, with mode 0o644.
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type: filter
identifier: audiolevel
title: Audio Levels
version: 1
copyright: Dan Dennedy, Marco Gittler, and Steve Harris
creator: Dan Dennedy
contributor:
- Marco Gittler
- Steve Harris
license: GPLv2
language: en
description: Compute the audio amplitude.
notes: >
This filter provides the amplitude level as a percentage value in floating point.
This does not do any "slowing" of the data by averaging out peaks and
troughs of short duration like a VU meter.
Applications can also get this data on the frame as meta.media.audio_level.<N>
where <N> is the channel number starting with 0.
tags:
- Audio
parameters:
- identifier: iec_scale
title: Use IEC 60268-18 Scale
type: integer
minimum: 0
maximum: 1
default: 1
widget: checkbox
- identifier: _audio_level.<N>
description: >
<N> is the channel number starting with 0.
This is updated on every frame with audio.
readonly: yes
type: float
minimum: 0
maximum: 1
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