waveform-node

Prerequisite

You need to have ffmpeg installed, and add the path to environment variable.

Usage

var waveform = require('../waveform-node');

var options = {};
waveform.getWaveForm( __dirname + './mpthreetest.mp3', options, function(error, peaks){
  if(error){
		return;
	}

  // Get peaks
	console.log(peaks);
});

Options

samplesPerSecond

Type: Integer

Default: undefined

Samples per second. This parameter is conflict with numOfSample, if this attribute was set, the numOfSample will be ignored.

numOfSample

Type: Integer

Default: 2000

Number of data point for return value, sampling across entire waveform

waveFormType

Type: Enum

Default: Stack

Choose type of return value

• Stack will be series of peak by picking highest absolute value in given window(sampling rate)
• Line will be series of value by the sampling rate