mlt

1.1.0 • Public • Published

MLT Module for Node.js

This module will generate the XML instructions needed to create a video using Media Lovin' Toolkit, including audio overlays, transitions, picture slides, and watermarks. This module was forked from node-mlt by Jeffrey Van Alstine.

Installation

npm install mlt

API

Create an MLT XML Object

var MLT = require('node-mlt');
 
var mlt = new MLT
console.log(mlt.toString());
//<?xml version="1.0" encoding="utf-8"?><mlt/>
console.log(mlt.toString({pretty: true}));
// <?xml version="1.0" encoding="utf-8"?>
//
//<mlt/>
//

Add producers to your MLT document

music = new MLT.Producer.Audio({source: '/home/jeffrey/Downloads/crazy.mp3'});
mlt.push(music);
 
image = new MLT.Producer.Image({source: '/home/jeffrey/Desktop/dachshund.jpg'});
mlt.push(image);

Create affine filter

var affine = new MLT.Filter.Affine
affine.geometry([
    {
        frame: 0,
        x: 0,
        y: 0,
        w: 1,
        h: 1,
        sat: 100
    },
    {
        frame: 999,
        x: 480,
        y: 640,
        w: 480,
        h: 640,
        sat: 100
    } 
]);

Create a watermark filter

var watermark = new MLT.Filter.Watermark({resource: '/home/jeffrey/Desktop/signature.jpg'});

Create an audio-gain filter

var fadeIn = new MLT.Filter.AudioFade({
    start: 0,
    length: 100,
    startVol: 0,
    endVol: 1
});

Create a Frei0r blur filter

var frei0r = new MLT.Filter.Frei0r
frei0r.squareblur([
    {
        frame: 0,
        size: 0.05
    },
    {
        frame: 22,
        size: 0
    }
]);
 

Add producers to a playlist with filters

var playlist = new MLT.Playlist;
 
playlist.entry({producer: music, filters: [fadeIn], length: 1000); // Length is in frames
mlt.push(playlist);

Add a playlist to a track

var track = new MLT.Multitrack.Track(playlist);

Add a track to a multitrack

var multitrack = new MLT.Multitrack;
multitrack.addTrack(track);

Add a multitrack to a tractor

var tractor = new MLT.Tractor;
tractor.push(multitrack);
mlt.push(tractor);

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Install

npm i mlt

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Version

1.1.0

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