ffmpeg-normalize 

> 🎧 Audio loudness normalization with ffmpeg.

Install

``bash
npm install ffmpeg-normalize
`

Usage

$3

`js
const normalize = require('ffmpeg-normalize');

normalize({
input: 'input.mp4',
output: 'output.mp4',
loudness: {
normalization: 'ebuR128',
target:
{
input_i: -23,
input_lra: 7.0,
input_tp: -2.0
}
},
verbose: true
})
.then(normalized => {
// Normalized
})
.catch(error => {
// Some error happened
});
`

API

$3

Parameters:

* input
* output
* loudness
* verbose

#### input

Type: string
Required: true

Path to the input file.

#### output

Type: string
Required: true

Path to the output file.

#### loudness

Type: object
Required: true

Describes a target loudness.

#### verbose

Type: boolean
Required: false
Default: false

When true sends ffmpeg input to stdout.

$3

Type: string
Required: true
Options: ebuR128 (Experimental rms || peak )

The normalization method to use.
The ebu R128 normalization uses a two pass method to measure the original values of the input file.
The other normalization methods only need the input_i value set.

#### loudness input_i

Type: number
Required: true

ebu R128 normalization
Min: -70.0
Max: -5.0
Default: -23

rms and peak normalization (Experimental)
Min: -99
Max: 0
Default: -23

The normalization target level in dB/LUFS.

#### loudness input_lra

Type: number
Required: false
Min: 1.0
Max: 20.0
Default: 7.0

Loudness range.

#### loudness input_tp

Type: number
Required: false
Min: -9.0
Max: 0.0
Default: -2.0`

True peak.

License

MIT © Peter Forgacs