wav-concat

Wav-concat node.js module to concat multiple wav audio files using ffmpeg

wav-contat provides a programmatic interface to do basically the same as calling ffmpeg via CLI like:

ffmpeg -i audio1.wav audio2.wav audio3.wav -y -filter_complex concat=n=3:v=0:a=1 out.wav

Requirements

• ffmpeg

You can download static builds of ffmpeg from here.

If you want to use wav-concat in Heroku, you could use the ffmpeg2 buildpack

Install

npm install wav-concat

Usage

var wavconcat = require('wav-concat')

var songs = [
  'audio1.wav',
  'audio2.wav',
  'audio3.wav'
]

wavconcat(songs)
  .concat('out.wav')
  .on('start', function (command) {
    console.log('ffmpeg process started:', command)
  })
  .on('error', function (err, stdout, stderr) {
    console.error('Error:', err)
    console.error('ffmpeg stderr:', stderr)
  })
  .on('end', function (output) {
    console.error('Audio created in:', output)
  })

Take a look to the programmatic API for more details

API

wav-concat(images, [ options ])

Return: wavconcat

wav-concat constructor. You should pass an array<string> with the desired audio files.

Supported audio formats: wav

wav-concat#concat(output)

Merge wav files and generate the output audio to the given file path.

wav-concat.VERSION

Type: string

Current package semantic version

wav-concat.ffmpeg

Type: function

fluent-ffmpeg API constructor

License

MIT © Thomas Cosialls